modbus/mb_utils.py
author Edouard Tisserant
Wed, 31 Jan 2018 11:21:08 +0100
changeset 1914 99f8cfa80b15
parent 1909 bb883e063175
child 1918 e7b6478b4ebc
permissions -rw-r--r--
launcher : move call to ShowSplashScreen and BackgroundInitialization to PreStart()
It doesn't change behaviour of launcher in beremiz, but may have some impact on some customizations.
Some customizations need to squeeze some bitmap folder init in between app creation and ShowSplashScreen
1909
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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, a Integrated Development Environment for
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# programming IEC 61131-3 automates supporting plcopen standard and CanFestival.
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#
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# Copyright (c) 2016 Mario de Sousa (msousa@fe.up.pt)
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program 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
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program.  If not, see <http://www.gnu.org/licenses/>.
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#    
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# This code is made available on the understanding that it will not be
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# used in safety-critical situations without a full and competent review.
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#dictionary implementing:
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#key   - string with the description we want in the request plugin GUI
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#tuple - (modbus function number, request type, max count value, data_type, bit_size)
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modbus_function_dict = {"01 - Read Coils" :               ( '1', 'req_input', 2000, "BOOL", 1 , "Q", "X", "Coil"),
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                        "02 - Read Input Discretes" :     ( '2', 'req_input', 2000, "BOOL", 1 , "I", "X", "Input Discrete"),
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                        "03 - Read Holding Registers" :   ( '3', 'req_input',  125, "WORD", 16, "Q", "W", "Holding Register"),
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                        "04 - Read Input Registers" :     ( '4', 'req_input',  125, "WORD", 16, "I", "W", "Input Register"),
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                        "05 - Write Single coil" :        ( '5','req_output',    1, "BOOL", 1 , "Q", "X", "Coil"),
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                        "06 - Write Single Register" :    ( '6','req_output',    1, "WORD", 16, "Q", "W", "Holding Register"),
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                        "15 - Write Multiple Coils" :     ('15','req_output', 1968, "BOOL", 1 , "Q", "X", "Coil"),
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                        "16 - Write Multiple Registers" : ('16','req_output',  123, "WORD", 16, "Q", "W", "Holding Register"),
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                       }
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def GetTCPServerNodePrinted(self, child):
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    """
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    Outputs a string to be used on C files
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    params: child - the correspondent subplugin in Beremiz
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    """
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    node_init_template = '''/*node %(locnodestr)s*/
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{"%(locnodestr)s", %(slaveid)s, {naf_tcp, {.tcp = {%(host)s, "%(port)s", DEF_CLOSE_ON_SILENCE}}}, -1 /* mb_nd */, 0 /* init_state */}'''
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    location = ".".join(map(str, child.GetCurrentLocation()))
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    host     = child.GetParamsAttributes()[0]["children"][0]["value"]
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    port     = child.GetParamsAttributes()[0]["children"][1]["value"]
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    slaveid  = child.GetParamsAttributes()[0]["children"][2]["value"]
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    if host=="#ANY#":
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      host='INADDR_ANY'
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    else:
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      host='"'+host+'"'
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    #slaveid = child.GetParamsAttributes()[0]["children"][2]["value"]
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    #if int(slaveid) not in xrange(256):
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        #self.GetCTRoot().logger.write_error("Error: Wrong slave ID in %s server node\nModbus Plugin C code returns empty\n"%location)
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        #return None
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    node_dict = {"locnodestr" : location,
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                 "host"       : host,
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                 "port"       : port,
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                 "slaveid"    : slaveid,
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                }
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    return node_init_template % node_dict
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def GetTCPServerMemAreaPrinted(self, child, nodeid):
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    """
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    Outputs a string to be used on C files
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    params: child - the correspondent subplugin in Beremiz
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            nodeid - on C code, each request has it's own parent node (sequential, 0..NUMBER_OF_NODES)
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                     It's this parameter.
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    return: None - if any definition error found
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            The string that should be added on C code - if everything goes allright
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    """
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    request_dict = {}
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    request_dict["locreqstr"] = "_".join(map(str, child.GetCurrentLocation()))
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    request_dict["nodeid"] = str(nodeid)
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    request_dict["address"] = child.GetParamsAttributes()[0]["children"][2]["value"]
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    if int(request_dict["address"]) not in xrange(65536):
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        self.GetCTRoot().logger.write_error("Modbus plugin: Invalid Start Address in server memory area node %(locreqstr)s (Must be in the range [0..65535])\nModbus plugin: Aborting C code generation for this node\n"%request_dict)
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        return None
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    request_dict["count"] = child.GetParamsAttributes()[0]["children"][1]["value"]
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    if int(request_dict["count"]) not in xrange(1, 65536):
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        self.GetCTRoot().logger.write_error("Modbus plugin: Invalid number of channels in server memory area node %(locreqstr)s (Must be in the range [1..65536-start_address])\nModbus plugin: Aborting C code generation for this node\n"%request_dict)
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        return None
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    if (int(request_dict["address"]) + int(request_dict["count"])) not in xrange(1,65537):
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        self.GetCTRoot().logger.write_error("Modbus plugin: Invalid number of channels in server memory area node %(locreqstr)s (Must be in the range [1..65536-start_address])\nModbus plugin: Aborting C code generation for this node\n"%request_dict)
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        return None
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    return ""
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modbus_serial_baudrate_list = ["110", "300", "600", "1200", "2400", "4800", "9600", "19200", "38400", "57600", "115200"]
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modbus_serial_stopbits_list = ["1", "2"]
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modbus_serial_parity_dict   = {"none": 0, "odd": 1, "even": 2}
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def GetRTUSlaveNodePrinted(self, child):
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    """
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    Outputs a string to be used on C files
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    params: child - the correspondent subplugin in Beremiz
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    """
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    node_init_template = '''/*node %(locnodestr)s*/
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{"%(locnodestr)s", %(slaveid)s, {naf_rtu, {.rtu = {"%(device)s", %(baud)s /*baud*/, %(parity)s /*parity*/, 8 /*data bits*/, %(stopbits)s, 0 /* ignore echo */}}}, -1 /* mb_nd */, 0 /* init_state */}'''
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    location = ".".join(map(str, child.GetCurrentLocation()))
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    device   = child.GetParamsAttributes()[0]["children"][0]["value"]
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    baud     = child.GetParamsAttributes()[0]["children"][1]["value"]
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    parity   = child.GetParamsAttributes()[0]["children"][2]["value"]
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    stopbits = child.GetParamsAttributes()[0]["children"][3]["value"]
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    slaveid  = child.GetParamsAttributes()[0]["children"][4]["value"]
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    node_dict = {"locnodestr" : location,
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                 "device"     : device,
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                 "baud"       : baud,
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                 "parity"     : modbus_serial_parity_dict[parity],
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                 "stopbits"   : stopbits,
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                 "slaveid"    : slaveid
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                }
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    return node_init_template % node_dict
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def GetRTUClientNodePrinted(self, child):
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    """
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    Outputs a string to be used on C files
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    params: child - the correspondent subplugin in Beremiz
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    """
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    node_init_template = '''/*node %(locnodestr)s*/
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{"%(locnodestr)s", {naf_rtu, {.rtu = {"%(device)s", %(baud)s /*baud*/, %(parity)s /*parity*/, 8 /*data bits*/, %(stopbits)s, 0 /* ignore echo */}}}, -1 /* mb_nd */, 0 /* init_state */, %(coms_period)s /* communication period */}'''
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    location    = ".".join(map(str, child.GetCurrentLocation()))
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    device      = child.GetParamsAttributes()[0]["children"][0]["value"]
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    baud        = child.GetParamsAttributes()[0]["children"][1]["value"]
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    parity      = child.GetParamsAttributes()[0]["children"][2]["value"]
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    stopbits    = child.GetParamsAttributes()[0]["children"][3]["value"]
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    coms_period = child.GetParamsAttributes()[0]["children"][4]["value"]
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    node_dict = {"locnodestr"  : location,
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                 "device"      : device,
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                 "baud"        : baud,
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                 "parity"      : modbus_serial_parity_dict[parity],
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                 "stopbits"    : stopbits,
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                 "coms_period" : coms_period
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                }
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    return node_init_template % node_dict
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   163
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def GetTCPClientNodePrinted(self, child):
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    """
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    Outputs a string to be used on C files
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    params: child - the correspondent subplugin in Beremiz
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    """
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    node_init_template = '''/*node %(locnodestr)s*/
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{"%(locnodestr)s", {naf_tcp, {.tcp = {"%(host)s", "%(port)s", DEF_CLOSE_ON_SILENCE}}}, -1 /* mb_nd */, 0 /* init_state */, %(coms_period)s /* communication period */, 0 /* prev_error */}'''
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    location = ".".join(map(str, child.GetCurrentLocation()))
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    host        = child.GetParamsAttributes()[0]["children"][0]["value"]
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    port        = child.GetParamsAttributes()[0]["children"][1]["value"]
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    coms_period = child.GetParamsAttributes()[0]["children"][2]["value"]
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    node_dict = {"locnodestr"  : location,
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                 "host"        : host,
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                 "port"        : port,
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                 "coms_period" : coms_period
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                }
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    return node_init_template % node_dict
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def GetClientRequestPrinted(self, child, nodeid):
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    """
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    Outputs a string to be used on C files
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    params: child - the correspondent subplugin in Beremiz
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            nodeid - on C code, each request has it's own parent node (sequential, 0..NUMBER_OF_NODES)
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                     It's this parameter.
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    return: None - if any definition error found
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            The string that should be added on C code - if everything goes allright
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    """
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    req_init_template = '''/*request %(locreqstr)s*/
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{"%(locreqstr)s", %(nodeid)s, %(slaveid)s, %(iotype)s, %(func_nr)s, %(address)s , %(count)s,
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DEF_REQ_SEND_RETRIES, 0 /* error_code */, 0 /* prev_code */, {%(timeout_s)d, %(timeout_ns)d} /* timeout */,
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{%(buffer)s}, {%(buffer)s}}'''
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    timeout      = int(child.GetParamsAttributes()[0]["children"][4]["value"])
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    timeout_s    = int(timeout / 1000)
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    timeout_ms   = timeout - (timeout_s * 1000)
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    timeout_ns   = timeout_ms * 1000000
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   207
    
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    request_dict = {}
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    request_dict["locreqstr" ] = "_".join(map(str, child.GetCurrentLocation()))
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    request_dict["nodeid"    ] = str(nodeid)
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    request_dict["slaveid"   ] =                      child.GetParamsAttributes()[0]["children"][1]["value"]
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    request_dict["address"   ] =                      child.GetParamsAttributes()[0]["children"][3]["value"]
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    request_dict["count"     ] =                      child.GetParamsAttributes()[0]["children"][2]["value"]
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    request_dict["timeout"   ] = timeout
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    request_dict["timeout_s" ] = timeout_s
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    request_dict["timeout_ns"] = timeout_ns
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    request_dict["buffer"    ] = ",".join(['0'] * int(child.GetParamsAttributes()[0]["children"][2]["value"]))
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    request_dict["func_nr"   ] = modbus_function_dict[child.GetParamsAttributes()[0]["children"][0]["value"]][0]
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    request_dict["iotype"    ] = modbus_function_dict[child.GetParamsAttributes()[0]["children"][0]["value"]][1]
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    request_dict["maxcount"  ] = modbus_function_dict[child.GetParamsAttributes()[0]["children"][0]["value"]][2]
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    if int(request_dict["slaveid"]) not in xrange(256):
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        self.GetCTRoot().logger.write_error("Modbus plugin: Invalid slaveID in TCP client request node %(locreqstr)s (Must be in the range [0..255])\nModbus plugin: Aborting C code generation for this node\n"%request_dict)
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        return None
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    if int(request_dict["address"]) not in xrange(65536):
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        self.GetCTRoot().logger.write_error("Modbus plugin: Invalid Start Address in TCP client request node %(locreqstr)s (Must be in the range [0..65535])\nModbus plugin: Aborting C code generation for this node\n"%request_dict)
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        return None
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    if int(request_dict["count"]) not in xrange(1, 1+int(request_dict["maxcount"])):
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        self.GetCTRoot().logger.write_error("Modbus plugin: Invalid number of channels in TCP client request node %(locreqstr)s (Must be in the range [1..%(maxcount)s])\nModbus plugin: Aborting C code generation for this node\n"%request_dict)
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        return None
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    if (int(request_dict["address"]) + int(request_dict["count"])) not in xrange(1,65537):
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        self.GetCTRoot().logger.write_error("Modbus plugin: Invalid number of channels in TCP client request node %(locreqstr)s (start_address + nr_channels must be less than 65536)\nModbus plugin: Aborting C code generation for this node\n"%request_dict)
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        return None
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    return req_init_template % request_dict