author | Mario de Sousa <msousa@fe.up.pt> |
Mon, 01 Jun 2020 08:54:26 +0100 | |
changeset 2654 | 7575050a80c5 |
child 2655 | d2b2ee04bfa1 |
permissions | -rw-r--r-- |
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#!/usr/bin/env python |
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# -*- coding: utf-8 -*- |
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# This file is part of Beremiz runtime. |
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# |
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# Copyright (C) 2020: Mario de Sousa |
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# |
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# See COPYING.Runtime file for copyrights details. |
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# |
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# This library is free software; you can redistribute it and/or |
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# modify it under the terms of the GNU Lesser General Public |
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# License as published by the Free Software Foundation; either |
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# version 2.1 of the License, or (at your option) any later version. |
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# This library is distributed in the hope that it will be useful, |
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# but WITHOUT ANY WARRANTY; without even the implied warranty of |
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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# Lesser General Public License for more details. |
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# You should have received a copy of the GNU Lesser General Public |
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# License along with this library; if not, write to the Free Software |
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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############################################################################################## |
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# This file implements an extension to the web server embedded in the Beremiz_service.py # |
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# runtime manager (webserver is in runtime/NevowServer.py). # |
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# # |
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# The extension implemented in this file allows for runtime configuration # |
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# of Modbus plugin parameters # |
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############################################################################################## |
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import json |
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import os |
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import ctypes |
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import string |
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import hashlib |
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from formless import annotate, webform |
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# reference to the PLCObject in runtime/PLCObject.py |
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# PLCObject is a singleton, created in runtime/__init__.py |
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_plcobj = None |
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# reference to the Nevow web server (a.k.a as NS in Beremiz_service.py) |
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# (Note that NS will reference the NevowServer.py _module_, and not an object/class) |
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_NS = None |
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# WorkingDir: the directory on which Beremiz_service.py is running, and where |
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# all the files downloaded to the PLC get stored |
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_WorkingDir = None |
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# Directory in which to store the persistent configurations |
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# Should be a directory that does not get wiped on reboot! |
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_ModbusConfFiledir = "/tmp" |
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# Will contain references to the C functions |
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# (implemented in beremiz/modbus/mb_runtime.c) |
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# used to get/set the Modbus specific configuration paramters |
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GetParamFuncs = {} |
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SetParamFuncs = {} |
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# List of all TCP clients configured in the loaded PLC (i.e. the .so file loaded into memory) |
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# Each entry will be a dictionary. See _Add_TCP_Client() for the data structure details... |
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_TCPclient_list = [] |
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# Paramters we will need to get from the C code, but that will not be shown |
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# on the web interface. Common to all modbus entry types (client/server, tcp/rtu/ascii) |
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General_parameters = [ |
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# param. name label ctype type annotate type |
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# (C code var name) (used on web interface) (C data type) (web data type) |
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# (annotate.String, |
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# annotate.Integer, ...) |
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("config_name" , _("") , ctypes.c_char_p, annotate.String), |
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("addr_type" , _("") , ctypes.c_char_p, annotate.String) |
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] |
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TCPclient_parameters = [ |
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# param. name label ctype type annotate type |
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# (C code var name) (used on web interface) (C data type) (web data type) |
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# (annotate.String, |
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# annotate.Integer, ...) |
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("host" , _("Remote IP Address") , ctypes.c_char_p, annotate.String), |
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("port" , _("Remote Port Number") , ctypes.c_char_p, annotate.String), |
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("comm_period" , _("Invocation Rate (ms)") , ctypes.c_ulonglong, annotate.Integer) |
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] |
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RTUclient_parameters = [ |
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# param. name label ctype type annotate type |
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# (C code var name) (used on web interface) (C data type) (web data type) |
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# (annotate.String, |
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# annotate.Integer, ...) |
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("device" , _("Serial Port") , ctypes.c_char_p, annotate.String), |
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("baud" , _("Baud Rate") , ctypes.c_int, annotate.Integer), |
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106 |
("parity" , _("Parity") , ctypes.c_int, annotate.Integer), |
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107 |
("stop_bits" , _("Stop Bits") , ctypes.c_int, annotate.Integer), |
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108 |
("comm_period" , _("Invocation Rate (ms)") , ctypes.c_ulonglong, annotate.Integer) |
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109 |
] |
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110 |
|
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111 |
|
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112 |
# Note: the dictionary key must be the same as the string returned by the |
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113 |
# __modbus_get_ClientNode_addr_type() |
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114 |
# __modbus_get_ServerNode_addr_type() |
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115 |
# functions implemented in C (see modbus/mb_runtime.c) |
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_client_parameters = {} |
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_client_parameters["tcp" ] = TCPclient_parameters |
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_client_parameters["rtu" ] = RTUclient_parameters |
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_client_parameters["ascii"] = [] # (Note: ascii not yet implemented in Beremiz modbus plugin) |
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120 |
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121 |
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122 |
#def _CheckPortnumber(port_number): |
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# """ check validity of the port number """ |
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# try: |
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# portnum = int(port_number) |
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# if (portnum < 0) or (portnum > 65535): |
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# raise Exception |
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# except Exception: |
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# return False |
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# |
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# return True |
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132 |
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133 |
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134 |
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135 |
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136 |
#def _CheckConfiguration(BACnetConfig): |
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# res = True |
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# res = res and _CheckPortnumber(BACnetConfig["port_number"]) |
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# res = res and _CheckDeviceID (BACnetConfig["device_id"]) |
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140 |
# return res |
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141 |
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142 |
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143 |
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144 |
#def _CheckWebConfiguration(BACnetConfig): |
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# res = True |
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146 |
# |
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147 |
# # check the port number |
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148 |
# if not _CheckPortnumber(BACnetConfig["port_number"]): |
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149 |
# raise annotate.ValidateError( |
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# {"port_number": "Invalid port number: " + str(BACnetConfig["port_number"])}, |
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151 |
# _("Modbus configuration error:")) |
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152 |
# res = False |
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153 |
# |
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154 |
# if not _CheckDeviceID(BACnetConfig["device_id"]): |
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155 |
# raise annotate.ValidateError( |
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# {"device_id": "Invalid device ID: " + str(BACnetConfig["device_id"])}, |
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157 |
# _("Modbus configuration error:")) |
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158 |
# res = False |
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159 |
# |
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160 |
# return res |
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161 |
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162 |
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163 |
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164 |
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165 |
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166 |
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167 |
def _SetSavedConfiguration(node_id, newConfig): |
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168 |
""" Stores a dictionary in a persistant file containing the Modbus parameter configuration """ |
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169 |
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170 |
filename = _TCPclient_list[node_id]["filename"] |
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171 |
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172 |
with open(os.path.realpath(filename), 'w') as f: |
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173 |
json.dump(newConfig, f, sort_keys=True, indent=4) |
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174 |
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175 |
_TCPclient_list[node_id]["SavedConfiguration"] = newConfig |
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176 |
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177 |
|
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178 |
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179 |
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180 |
def _DelSavedConfiguration(node_id): |
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181 |
""" Deletes the file cotaining the persistent Modbus configuration """ |
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182 |
filename = _TCPclient_list[node_id]["filename"] |
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183 |
|
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184 |
if os.path.exists(filename): |
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185 |
os.remove(filename) |
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186 |
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187 |
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188 |
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189 |
|
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190 |
def _GetSavedConfiguration(node_id): |
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191 |
""" |
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192 |
Returns a dictionary containing the Modbus parameter configuration |
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193 |
that was last saved to file. If no file exists, then return None |
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194 |
""" |
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195 |
filename = _TCPclient_list[node_id]["filename"] |
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196 |
try: |
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197 |
#if os.path.isfile(filename): |
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198 |
saved_config = json.load(open(filename)) |
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199 |
except Exception: |
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200 |
return None |
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201 |
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202 |
#if _CheckConfiguration(saved_config): |
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# return saved_config |
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204 |
#else: |
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# return None |
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206 |
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return saved_config |
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209 |
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210 |
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def _GetPLCConfiguration(node_id): |
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""" |
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Returns a dictionary containing the current Modbus parameter configuration |
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stored in the C variables in the loaded PLC (.so file) |
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""" |
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current_config = {} |
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addr_type = _TCPclient_list[node_id]["addr_type"] |
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for par_name, x1, x2, x3 in _client_parameters[addr_type]: |
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value = GetParamFuncs[par_name](node_id) |
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if value is not None: |
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current_config[par_name] = value |
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return current_config |
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def _SetPLCConfiguration(node_id, newconfig): |
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""" |
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Stores the Modbus parameter configuration into the |
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the C variables in the loaded PLC (.so file) |
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""" |
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addr_type = _TCPclient_list[node_id]["addr_type"] |
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|
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for par_name in newconfig: |
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value = newconfig[par_name] |
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if value is not None: |
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SetParamFuncs[par_name](node_id, value) |
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def _GetWebviewConfigurationValue(ctx, node_id, argument): |
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""" |
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Callback function, called by the web interface (NevowServer.py) |
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to fill in the default value of each parameter of the web form |
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|
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Note that the real callback function is a dynamically created function that |
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will simply call this function to do the work. It will also pass the node_id |
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as a parameter. |
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""" |
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try: |
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return _TCPclient_list[node_id]["WebviewConfiguration"][argument.name] |
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except Exception: |
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return "" |
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|
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|
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def _updateWebInterface(node_id): |
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""" |
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Add/Remove buttons to/from the web interface depending on the current state |
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- If there is a saved state => add a delete saved state button |
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""" |
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config_hash = _TCPclient_list[node_id]["config_hash"] |
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config_name = _TCPclient_list[node_id]["config_name"] |
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|
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# Add a "Delete Saved Configuration" button if there is a saved configuration! |
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if _TCPclient_list[node_id]["SavedConfiguration"] is None: |
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_NS.ConfigurableSettings.delSettings("ModbusConfigDelSaved" + config_hash) |
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else: |
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def __OnButtonDel(**kwargs): |
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return OnButtonDel(node_id = node_id, **kwargs) |
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|
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_NS.ConfigurableSettings.addSettings( |
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"ModbusConfigDelSaved" + config_hash, # name (internal, may not contain spaces, ...) |
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_("Modbus Configuration: ") + config_name, # description (user visible label) |
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[], # fields (empty, no parameters required!) |
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_("Delete Configuration Stored in Persistent Storage"), # button label |
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__OnButtonDel, # callback |
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"ModbusConfigParm" + config_hash) # Add after entry xxxx |
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|
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|
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|
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def OnButtonSave(**kwargs): |
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""" |
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Function called when user clicks 'Save' button in web interface |
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The function will configure the Modbus plugin in the PLC with the values |
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specified in the web interface. However, values must be validated first! |
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|
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Note that this function does not get called directly. The real callback |
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function is the dynamic __OnButtonSave() function, which will add the |
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"node_id" argument, and call this function to do the work. |
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""" |
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|
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#_plcobj.LogMessage("Modbus web server extension::OnButtonSave() Called") |
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|
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newConfig = {} |
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node_id = kwargs.get("node_id", None) |
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addr_type = _TCPclient_list[node_id]["addr_type"] |
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|
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for par_name, x1, x2, x3 in _client_parameters[addr_type]: |
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value = kwargs.get(par_name, None) |
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if value is not None: |
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newConfig[par_name] = value |
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|
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_TCPclient_list[node_id]["WebviewConfiguration"] = newConfig |
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|
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# First check if configuration is OK. |
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## TODO... |
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#if not _CheckWebConfiguration(newConfig): |
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# return |
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|
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# store to file the new configuration so that |
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# we can recoup the configuration the next time the PLC |
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# has a cold start (i.e. when Beremiz_service.py is retarted) |
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_SetSavedConfiguration(node_id, newConfig) |
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|
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# Configure PLC with the current Modbus parameters |
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_SetPLCConfiguration(node_id, newConfig) |
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322 |
|
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323 |
# File has just been created => Delete button must be shown on web interface! |
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324 |
_updateWebInterface(node_id) |
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325 |
|
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|
326 |
|
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|
327 |
|
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|
328 |
|
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329 |
def OnButtonDel(**kwargs): |
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330 |
""" |
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331 |
Function called when user clicks 'Delete' button in web interface |
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332 |
The function will delete the file containing the persistent |
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333 |
Modbus configution |
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334 |
""" |
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|
335 |
|
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336 |
node_id = kwargs.get("node_id", None) |
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337 |
|
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338 |
# Delete the file |
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339 |
_DelSavedConfiguration(node_id) |
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340 |
|
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341 |
# Set the current configuration to the default (hardcoded in C) |
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342 |
new_config = _TCPclient_list[node_id]["DefaultConfiguration"] |
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343 |
_SetPLCConfiguration(node_id, new_config) |
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344 |
|
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345 |
#Update the webviewconfiguration |
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346 |
_TCPclient_list[node_id]["WebviewConfiguration"] = new_config |
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347 |
|
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348 |
# Reset SavedConfiguration |
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349 |
_TCPclient_list[node_id]["SavedConfiguration"] = None |
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350 |
|
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351 |
# File has just been deleted => Delete button on web interface no longer needed! |
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352 |
_updateWebInterface(node_id) |
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|
353 |
|
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|
354 |
|
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|
355 |
|
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|
356 |
|
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357 |
def OnButtonShowCur(**kwargs): |
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358 |
""" |
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359 |
Function called when user clicks 'Show Current PLC Configuration' button in web interface |
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360 |
The function will load the current PLC configuration into the web form |
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|
361 |
|
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|
362 |
Note that this function does not get called directly. The real callback |
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|
363 |
function is the dynamic __OnButtonShowCur() function, which will add the |
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|
364 |
"node_id" argument, and call this function to do the work. |
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365 |
""" |
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366 |
node_id = kwargs.get("node_id", None) |
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|
367 |
|
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368 |
_TCPclient_list[node_id]["WebviewConfiguration"] = _GetPLCConfiguration(node_id) |
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|
369 |
|
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|
370 |
|
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|
371 |
|
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|
372 |
|
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|
373 |
def _Load_TCP_Client(node_id): |
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374 |
TCPclient_entry = {} |
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|
375 |
|
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376 |
config_name = GetParamFuncs["config_name"](node_id) |
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377 |
# addr_type will be one of "tcp", "rtu" or "ascii" |
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|
378 |
addr_type = GetParamFuncs["addr_type" ](node_id) |
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|
379 |
# For some operations we cannot use the config name (e.g. filename to store config) |
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|
380 |
# because the user may be using characters that are invalid for that purpose ('/' for |
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|
381 |
# example), so we create a hash of the config_name, and use that instead. |
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|
382 |
config_hash = hashlib.md5(config_name).hexdigest() |
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|
383 |
|
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|
384 |
_plcobj.LogMessage("Modbus web server extension::_Load_TCP_Client("+str(node_id)+") config_name="+config_name) |
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|
385 |
|
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|
386 |
# Add the new entry to the global list |
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|
387 |
# Note: it is OK, and actually necessary, to do this _before_ seting all the parameters in TCPclient_entry |
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|
388 |
# TCPclient_entry will be stored as a reference, so we can insert parameters at will. |
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|
389 |
global _TCPclient_list |
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|
390 |
_TCPclient_list.append(TCPclient_entry) |
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|
391 |
|
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|
392 |
# store all node_id relevant data for future reference |
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|
393 |
TCPclient_entry["node_id" ] = node_id |
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|
394 |
TCPclient_entry["config_name" ] = config_name |
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|
395 |
TCPclient_entry["addr_type" ] = addr_type |
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|
396 |
TCPclient_entry["config_hash" ] = config_hash |
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|
397 |
TCPclient_entry["filename" ] = os.path.join(_ModbusConfFiledir, "Modbus_config_" + config_hash + ".json") |
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|
398 |
|
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|
399 |
# Dictionary that contains the Modbus configuration currently being shown |
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|
400 |
# on the web interface |
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|
401 |
# This configuration will almost always be identical to the current |
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|
402 |
# configuration in the PLC (i.e., the current state stored in the |
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|
403 |
# C variables in the .so file). |
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|
404 |
# The configuration viewed on the web will only be different to the current |
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parents:
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|
405 |
# configuration when the user edits the configuration, and when |
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Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
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parents:
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|
406 |
# the user asks to save an edited configuration that contains an error. |
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|
407 |
TCPclient_entry["WebviewConfiguration"] = None |
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|
408 |
|
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Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
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|
409 |
# Upon PLC load, this Dictionary is initialised with the Modbus configuration |
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|
410 |
# hardcoded in the C file |
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|
411 |
# (i.e. the configuration inserted in Beremiz IDE when project was compiled) |
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parents:
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|
412 |
TCPclient_entry["DefaultConfiguration"] = _GetPLCConfiguration(node_id) |
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|
413 |
TCPclient_entry["WebviewConfiguration"] = TCPclient_entry["DefaultConfiguration"] |
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Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
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|
414 |
|
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Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
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|
415 |
# Dictionary that stores the Modbus configuration currently stored in a file |
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Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
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|
416 |
# Currently only used to decide whether or not to show the "Delete" button on the |
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Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
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parents:
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|
417 |
# web interface (only shown if _SavedConfiguration is not None) |
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|
418 |
SavedConfig = _GetSavedConfiguration(node_id) |
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Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
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|
419 |
TCPclient_entry["SavedConfiguration"] = SavedConfig |
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Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
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|
420 |
|
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|
421 |
if SavedConfig is not None: |
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Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
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parents:
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|
422 |
_SetPLCConfiguration(node_id, SavedConfig) |
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Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
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parents:
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|
423 |
TCPclient_entry["WebviewConfiguration"] = SavedConfig |
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|
424 |
|
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Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
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|
425 |
# Define the format for the web form used to show/change the current parameters |
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Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
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parents:
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|
426 |
# We first declare a dynamic function to work as callback to obtain the default values for each parameter |
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Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
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parents:
diff
changeset
|
427 |
def __GetWebviewConfigurationValue(ctx, argument): |
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Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
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parents:
diff
changeset
|
428 |
return _GetWebviewConfigurationValue(ctx, node_id, argument) |
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Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
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parents:
diff
changeset
|
429 |
|
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
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parents:
diff
changeset
|
430 |
webFormInterface = [(name, web_dtype (label=web_label, default=__GetWebviewConfigurationValue)) |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
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parents:
diff
changeset
|
431 |
for name, web_label, c_dtype, web_dtype in _client_parameters[addr_type]] |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
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parents:
diff
changeset
|
432 |
|
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
433 |
# Configure the web interface to include the Modbus config parameters |
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Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
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parents:
diff
changeset
|
434 |
def __OnButtonSave(**kwargs): |
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Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
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parents:
diff
changeset
|
435 |
OnButtonSave(node_id=node_id, **kwargs) |
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Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
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parents:
diff
changeset
|
436 |
|
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
437 |
_NS.ConfigurableSettings.addSettings( |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
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parents:
diff
changeset
|
438 |
"ModbusConfigParm" + config_hash, # name (internal, may not contain spaces, ...) |
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Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
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parents:
diff
changeset
|
439 |
_("Modbus Configuration: ") + config_name, # description (user visible label) |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
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parents:
diff
changeset
|
440 |
webFormInterface, # fields |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
441 |
_("Save Configuration to Persistent Storage"), # button label |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
442 |
__OnButtonSave) # callback |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
443 |
|
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
444 |
# Add a "View Current Configuration" button |
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Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
445 |
def __OnButtonShowCur(**kwargs): |
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Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
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parents:
diff
changeset
|
446 |
OnButtonShowCur(node_id=node_id, **kwargs) |
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Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
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parents:
diff
changeset
|
447 |
|
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
448 |
_NS.ConfigurableSettings.addSettings( |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
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parents:
diff
changeset
|
449 |
"ModbusConfigViewCur" + config_hash, # name (internal, may not contain spaces, ...) |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
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parents:
diff
changeset
|
450 |
_("Modbus Configuration: ") + config_name, # description (user visible label) |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
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parents:
diff
changeset
|
451 |
[], # fields (empty, no parameters required!) |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
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parents:
diff
changeset
|
452 |
_("Show Current PLC Configuration"), # button label |
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Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
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parents:
diff
changeset
|
453 |
__OnButtonShowCur) # callback |
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Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
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parents:
diff
changeset
|
454 |
|
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
455 |
# Add the Delete button to the web interface, if required |
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Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
456 |
_updateWebInterface(node_id) |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
457 |
|
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
458 |
|
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
459 |
|
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
460 |
|
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
461 |
def OnLoadPLC(): |
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Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
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parents:
diff
changeset
|
462 |
""" |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
463 |
Callback function, called (by PLCObject.py) when a new PLC program |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
464 |
(i.e. XXX.so file) is transfered to the PLC runtime |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
465 |
and loaded into memory |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
466 |
""" |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
467 |
|
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
468 |
#_plcobj.LogMessage("Modbus web server extension::OnLoadPLC() Called...") |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
469 |
|
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
470 |
if _plcobj.PLClibraryHandle is None: |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
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parents:
diff
changeset
|
471 |
# PLC was loaded but we don't have access to the library of compiled code (.so lib)? |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
472 |
# Hmm... This shold never occur!! |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
473 |
return |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
474 |
|
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
475 |
# Get the number of Modbus Client and Servers (Modbus plugin) |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
476 |
# configured in the currently loaded PLC project (i.e., the .so file) |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
477 |
# If the "__modbus_plugin_client_node_count" |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
478 |
# or the "__modbus_plugin_server_node_count" C variables |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
479 |
# are not present in the .so file we conclude that the currently loaded |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
480 |
# PLC does not have the Modbus plugin included (situation (2b) described above init()) |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
481 |
try: |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
482 |
client_count = ctypes.c_int.in_dll(_plcobj.PLClibraryHandle, "__modbus_plugin_client_node_count").value |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
483 |
server_count = ctypes.c_int.in_dll(_plcobj.PLClibraryHandle, "__modbus_plugin_server_node_count").value |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
484 |
except Exception: |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
485 |
# Loaded PLC does not have the Modbus plugin => nothing to do |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
486 |
# (i.e. do _not_ configure and make available the Modbus web interface) |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
487 |
return |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
488 |
|
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
489 |
if client_count < 0: client_count = 0 |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
490 |
if server_count < 0: server_count = 0 |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
491 |
|
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
492 |
if (client_count == 0) and (server_count == 0): |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
493 |
# The Modbus plugin in the loaded PLC does not have any client and servers configured |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
494 |
# => nothing to do (i.e. do _not_ configure and make available the Modbus web interface) |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
495 |
return |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
496 |
|
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
497 |
# Map the get/set functions (written in C code) we will be using to get/set the configuration parameters |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
498 |
for name, web_label, c_dtype, web_dtype in TCPclient_parameters + RTUclient_parameters + General_parameters: |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
499 |
GetParamFuncName = "__modbus_get_ClientNode_" + name |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
500 |
GetParamFuncs[name] = getattr(_plcobj.PLClibraryHandle, GetParamFuncName) |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
501 |
GetParamFuncs[name].restype = c_dtype |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
502 |
GetParamFuncs[name].argtypes = [ctypes.c_int] |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
503 |
|
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
504 |
for name, web_label, c_dtype, web_dtype in TCPclient_parameters + RTUclient_parameters: |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
505 |
SetParamFuncName = "__modbus_set_ClientNode_" + name |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
506 |
SetParamFuncs[name] = getattr(_plcobj.PLClibraryHandle, SetParamFuncName) |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
507 |
SetParamFuncs[name].restype = None |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
508 |
SetParamFuncs[name].argtypes = [ctypes.c_int, c_dtype] |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
509 |
|
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
510 |
for node_id in range(client_count): |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
511 |
_Load_TCP_Client(node_id) |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
512 |
|
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
513 |
|
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
514 |
|
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
515 |
|
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
516 |
|
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
517 |
|
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
518 |
def OnUnLoadPLC(): |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
519 |
""" |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
520 |
# Callback function, called (by PLCObject.py) when a PLC program is unloaded from memory |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
521 |
""" |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
522 |
|
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
523 |
#_plcobj.LogMessage("Modbus web server extension::OnUnLoadPLC() Called...") |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
524 |
|
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
525 |
# Delete the Modbus specific web interface extensions |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
526 |
# (Safe to ask to delete, even if it has not been added!) |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
527 |
global _TCPclient_list |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
528 |
for TCPclient_entry in _TCPclient_list: |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
529 |
config_hash = TCPclient_entry["config_hash"] |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
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530 |
_NS.ConfigurableSettings.delSettings("ModbusConfigParm" + config_hash) |
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Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
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|
531 |
_NS.ConfigurableSettings.delSettings("ModbusConfigViewCur" + config_hash) |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
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|
532 |
_NS.ConfigurableSettings.delSettings("ModbusConfigDelSaved" + config_hash) |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
533 |
|
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
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|
534 |
# Dele all entries... |
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Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
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|
535 |
_TCPclient_list = [] |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
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changeset
|
536 |
|
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
537 |
|
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
538 |
|
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
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changeset
|
539 |
# The Beremiz_service.py service, along with the integrated web server it launches |
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Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
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|
540 |
# (i.e. Nevow web server, in runtime/NevowServer.py), will go through several states |
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Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
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|
541 |
# once started: |
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Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
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|
542 |
# (1) Web server is started, but no PLC is loaded |
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Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
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|
543 |
# (2) PLC is loaded (i.e. the PLC compiled code is loaded) |
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Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
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|
544 |
# (a) The loaded PLC includes the Modbus plugin |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
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parents:
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|
545 |
# (b) The loaded PLC does not have the Modbus plugin |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
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|
546 |
# |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
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|
547 |
# During (1) and (2a): |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
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|
548 |
# we configure the web server interface to not have the Modbus web configuration extension |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
549 |
# During (2b) |
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Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
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parents:
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|
550 |
# we configure the web server interface to include the Modbus web configuration extension |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
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|
551 |
# |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
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|
552 |
# PS: reference to the pyroserver (i.e., the server object of Beremiz_service.py) |
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Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
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|
553 |
# (NOTE: PS.plcobj is a reference to PLCObject.py) |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
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|
554 |
# NS: reference to the web server (i.e. the NevowServer.py module) |
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Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
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parents:
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|
555 |
# WorkingDir: the directory on which Beremiz_service.py is running, and where |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
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parents:
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changeset
|
556 |
# all the files downloaded to the PLC get stored, including |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
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|
557 |
# the .so file with the compiled C generated code |
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Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
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|
558 |
def init(plcobj, NS, WorkingDir): |
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Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
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|
559 |
#PS.plcobj.LogMessage("Modbus web server extension::init(PS, NS, " + WorkingDir + ") Called") |
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Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
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parents:
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|
560 |
global _WorkingDir |
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Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
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|
561 |
_WorkingDir = WorkingDir |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
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|
562 |
global _plcobj |
7575050a80c5
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Mario de Sousa <msousa@fe.up.pt>
parents:
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|
563 |
_plcobj = plcobj |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
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|
564 |
global _NS |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
565 |
_NS = NS |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
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|
566 |
|
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
changeset
|
567 |
_plcobj.RegisterCallbackLoad ("Modbus_Settins_Extension", OnLoadPLC) |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
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|
568 |
_plcobj.RegisterCallbackUnLoad("Modbus_Settins_Extension", OnUnLoadPLC) |
7575050a80c5
Add web extension: configure Modbus plugin parameters (currently only supports Modbus clients)
Mario de Sousa <msousa@fe.up.pt>
parents:
diff
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|
569 |
OnUnLoadPLC() # init is called before the PLC gets loaded... so we make sure we have the correct state |