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#!/usr/bin/env python

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# -*- coding: utf-8 -*-

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import string, os, sys

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#This file is part of PLCOpenEditor, a library implementing an IEC 61131-3 editor

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#based on the plcopen standard. 

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#

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#Copyright (C) 2007: Edouard TISSERANT and Laurent BESSARD

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#

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#See COPYING 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 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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#

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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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#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

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#License along with this library; if not, write to the Free Software

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#Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

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    27

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LANGUAGES = ["IL","ST","FBD","LD","SFC"]

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    30

LOCATIONDATATYPES = {"X" : ["BOOL"],

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                     "B" : ["SINT", "USINT", "BYTE", "STRING"],

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                     "W" : ["INT", "UINT", "WORD", "WSTRING"],

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                     "D" : ["DINT", "UDINT", "REAL", "DWORD"],

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                     "L" : ["LINT", "ULINT", "LREAL", "LWORD"]} 

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_ = lambda x:x

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    38

# Helper for emulate join on element list

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def JoinList(separator, mylist):

    40

    if len(mylist) > 0 :

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        return reduce(lambda x, y: x + separator + y, mylist)

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    else :

    43

        return mylist

    44

    46

    body_type = body.getcontent()["name"]

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    name = block.getinstanceName()

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    type = block.gettypeName()

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    executionOrderId = block.getexecutionOrderId()

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    if block_infos["type"] == "function":

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        output_variables = block.outputVariables.getvariable()

    57

        if not generator.ComputedBlocks.get(block, False) and not order:

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            generator.ComputedBlocks[block] = True

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            vars = []

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            one_input_connected = False

    61

            for i, variable in enumerate(block.inputVariables.getvariable()):

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                input_info = (generator.TagName, "block", block.getlocalId(), "input", i)

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                connections = variable.connectionPointIn.getconnections()

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                if connections is not None:

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                    parameter = variable.getformalParameter()

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                    if parameter != "EN":

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                        one_input_connected = True

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                    if len(output_variables) > 1:

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                        vars.append([(parameter, input_info),

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                                     (" := ", ())] + generator.ExtractModifier(variable, value, input_info))

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                    else:

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                        vars.append(generator.ExtractModifier(variable, value, input_info))

    78

            if one_input_connected:

    79

                for i, variable in enumerate(output_variables):

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                    parameter = variable.getformalParameter()

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                generator.Program += [(generator.CurrentIndent, ()),

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                                      (output_name, output_info),

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                                      (" := ", ()),

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                                      (type, (generator.TagName, "block", block.getlocalId(), "type")),

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                                      ("(", ())]

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                generator.Program += JoinList([(", ", ())], vars)

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                generator.Program += [(");\n", ())]

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            else:

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                generator.Warnings.append(_("\"%s\" function cancelled in \"%s\" POU: No input connected")%(type, generator.TagName.split("::")[-1]))

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        if link:

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            connectionPoint = link.getposition()[-1]

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        else:

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            connectionPoint = None

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        for i, variable in enumerate(output_variables):

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            blockPointx, blockPointy = variable.connectionPointOut.getrelPositionXY()

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            if not connectionPoint or block.getx() + blockPointx == connectionPoint.getx() and block.gety() + blockPointy == connectionPoint.gety():

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                output_info = (generator.TagName, "block", block.getlocalId(), "output", i)

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                else:

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    elif block_infos["type"] == "functionBlock":

   126

        if not generator.ComputedBlocks.get(block, False) and not order:

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            generator.ComputedBlocks[block] = True

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            vars = []

   129

            for i, variable in enumerate(block.inputVariables.getvariable()):

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                input_info = (generator.TagName, "block", block.getlocalId(), "input", i)

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                connections = variable.connectionPointIn.getconnections()

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                if connections is not None:

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                    parameter = variable.getformalParameter()

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                    vars.append([(parameter, input_info),

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                                 (" := ", ())] + generator.ExtractModifier(variable, value, input_info))

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            generator.Program += [(generator.CurrentIndent, ()), 

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                                  (name, (generator.TagName, "block", block.getlocalId(), "name")),

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                                  ("(", ())]

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            generator.Program += JoinList([(", ", ())], vars)

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            generator.Program += [(");\n", ())]

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        if link:

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            connectionPoint = link.getposition()[-1]

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        else:

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            connectionPoint = None

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        for i, variable in enumerate(block.outputVariables.getvariable()):

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            blockPointx, blockPointy = variable.connectionPointOut.getrelPositionXY()

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            if not connectionPoint or block.getx() + blockPointx == connectionPoint.getx() and block.gety() + blockPointy == connectionPoint.gety():

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                output_info = (generator.TagName, "block", block.getlocalId(), "output", i)

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    if link is not None:

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        raise ValueError, _("No output variable found")

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   169

def initialise_block(type, name, block = None):

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    return [(type, name, None, None)]

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#-------------------------------------------------------------------------------

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#                        Function Block Types definitions

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#-------------------------------------------------------------------------------

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"""

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Ordored list of common Function Blocks defined in the IEC 61131-3

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Each block have this attributes:

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    - "name" : The block name

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    - "type" : The block type. It can be "function", "functionBlock" or "program"

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    - "extensible" : Boolean that define if the block is extensible

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    - "inputs" : List of the block inputs

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    - "outputs" : List of the block outputs

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    - "comment" : Comment that will be displayed in the block popup

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    - "generate" : Method that generator will call for generating ST block code

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Inputs and outputs are a tuple of characteristics that are in order:

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    - The name

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    - The data type

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    - The default modifier which can be "none", "negated", "rising" or "falling"

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"""

   192

   193

BlockTypes = [{"name" : _("Standard function blocks"), "list":

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               [{"name" : "SR", "type" : "functionBlock", "extensible" : False, 

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                    "inputs" : [("S1","BOOL","none"),("R","BOOL","none")], 

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                    "outputs" : [("Q1","BOOL","none")],

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                    "comment" : _("SR bistable\nThe SR bistable is a latch where the Set dominates."),

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                    "generate" : generate_block, "initialise" : initialise_block},

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                {"name" : "RS", "type" : "functionBlock", "extensible" : False, 

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                    "inputs" : [("S","BOOL","none"),("R1","BOOL","none")], 

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                    "outputs" : [("Q1","BOOL","none")],

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                    "comment" : _("RS bistable\nThe RS bistable is a latch where the Reset dominates."),

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                    "generate" : generate_block, "initialise" : initialise_block},

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                {"name" : "SEMA", "type" : "functionBlock", "extensible" : False, 

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                    "inputs" : [("CLAIM","BOOL","none"),("RELEASE","BOOL","none")], 

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                    "outputs" : [("BUSY","BOOL","none")],

   207

                    "comment" : _("Semaphore\nThe semaphore provides a mechanism to allow software elements mutually exclusive access to certain ressources."),

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                    "generate" : generate_block, "initialise" : initialise_block},

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                {"name" : "R_TRIG", "type" : "functionBlock", "extensible" : False, 

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                    "inputs" : [("CLK","BOOL","none")], 

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                    "outputs" : [("Q","BOOL","none")],

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                    "comment" : _("Rising edge detector\nThe output produces a single pulse when a rising edge is detected."),

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                    "generate" : generate_block, "initialise" : initialise_block},

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                {"name" : "F_TRIG", "type" : "functionBlock", "extensible" : False, 

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                    "inputs" : [("CLK","BOOL","none")], 

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                    "outputs" : [("Q","BOOL","none")],

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                    "comment" : _("Falling edge detector\nThe output produces a single pulse when a falling edge is detected."),

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                    "generate" : generate_block, "initialise" : initialise_block},

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                {"name" : "CTU", "type" : "functionBlock", "extensible" : False, 

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                    "inputs" : [("CU","BOOL","rising"),("R","BOOL","none"),("PV","INT","none")], 

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                    "outputs" : [("Q","BOOL","none"),("CV","INT","none")],

   222

                    "comment" : _("Up-counter\nThe up-counter can be used to signal when a count has reached a maximum value."),

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                    "generate" : generate_block, "initialise" : initialise_block},

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                {"name" : "CTD", "type" : "functionBlock", "extensible" : False, 

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                    "inputs" : [("CD","BOOL","rising"),("LD","BOOL","none"),("PV","INT","none")], 

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                    "outputs" : [("Q","BOOL","none"),("CV","INT","none")],

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                    "comment" : _("Down-counter\nThe down-counter can be used to signal when a count has reached zero, on counting down from a preset value."),

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                    "generate" : generate_block, "initialise" : initialise_block},

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                {"name" : "CTUD", "type" : "functionBlock", "extensible" : False, 

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                    "inputs" : [("CU","BOOL","rising"),("CD","BOOL","rising"),("R","BOOL","none"),("LD","BOOL","none"),("PV","INT","none")], 

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                    "outputs" : [("QU","BOOL","none"),("QD","BOOL","none"),("CV","INT","none")],

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                    "comment" : _("Up-down counter\nThe up-down counter has two inputs CU and CD. It can be used to both count up on one input and down on the other."),

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                    "generate" : generate_block, "initialise" : initialise_block},

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                {"name" : "TP", "type" : "functionBlock", "extensible" : False, 

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                    "inputs" : [("IN","BOOL","none"),("PT","TIME","none")], 

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                    "outputs" : [("Q","BOOL","none"),("ET","TIME","none")],

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                    "comment" : _("Pulse timer\nThe pulse timer can be used to generate output pulses of a given time duration."),

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                    "generate" : generate_block, "initialise" : initialise_block},

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                {"name" : "TON", "type" : "functionBlock", "extensible" : False, 

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                    "inputs" : [("IN","BOOL","none"),("PT","TIME","none")], 

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                    "outputs" : [("Q","BOOL","none"),("ET","TIME","none")],

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                    "comment" : _("On-delay timer\nThe on-delay timer can be used to delay setting an output true, for fixed period after an input becomes true."),

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                    "generate" : generate_block, "initialise" : initialise_block},

   244

                {"name" : "TOF", "type" : "functionBlock", "extensible" : False, 

   245

                    "inputs" : [("IN","BOOL","none"),("PT","TIME","none")], 

   246

                    "outputs" : [("Q","BOOL","none"),("ET","TIME","none")],

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                    "comment" : _("Off-delay timer\nThe off-delay timer can be used to delay setting an output false, for fixed period after input goes false."),

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                    "generate" : generate_block, "initialise" : initialise_block},

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                ]},

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              {"name" : _("Additional function blocks"), "list":

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               [{"name" : "RTC", "type" : "functionBlock", "extensible" : False, 

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                    "inputs" : [("IN","BOOL","none"),("PDT","DATE_AND_TIME","none")], 

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                    "outputs" : [("Q","BOOL","none"),("CDT","DATE_AND_TIME","none")],

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                    "comment" : _("Real time clock\nThe real time clock has many uses including time stamping, setting dates and times of day in batch reports, in alarm messages and so on."),

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                    "generate" : generate_block, "initialise" : initialise_block},

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                {"name" : "INTEGRAL", "type" : "functionBlock", "extensible" : False, 

   257

                    "inputs" : [("RUN","BOOL","none"),("R1","BOOL","none"),("XIN","REAL","none"),("X0","REAL","none"),("CYCLE","TIME","none")], 

   258

                    "outputs" : [("Q","BOOL","none"),("XOUT","REAL","none")],

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                    "comment" : _("Integral\nThe integral function block integrates the value of input XIN over time."),

   260

                    "generate" : generate_block, "initialise" : initialise_block},

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                {"name" : "DERIVATIVE", "type" : "functionBlock", "extensible" : False, 

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                    "inputs" : [("RUN","BOOL","none"),("XIN","REAL","none"),("CYCLE","TIME","none")], 

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                    "outputs" : [("XOUT","REAL","none")],

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                    "comment" : _("Derivative\nThe derivative function block produces an output XOUT proportional to the rate of change of the input XIN."),

   265

                    "generate" : generate_block, "initialise" : initialise_block},

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                {"name" : "PID", "type" : "functionBlock", "extensible" : False, 

   267

                    "inputs" : [("AUTO","BOOL","none"),("PV","REAL","none"),("SP","REAL","none"),("X0","REAL","none"),("KP","REAL","none"),("TR","REAL","none"),("TD","REAL","none"),("CYCLE","TIME","none")], 

   268

                    "outputs" : [("XOUT","REAL","none")],

   269

                    "comment" : _("PID\nThe PID (proportional, Integral, Derivative) function block provides the classical three term controller for closed loop control."),

   270

                    "generate" : generate_block, "initialise" : initialise_block},

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                {"name" : "RAMP", "type" : "functionBlock", "extensible" : False, 

   272

                    "inputs" : [("RUN","BOOL","none"),("X0","REAL","none"),("X1","REAL","none"),("TR","TIME","none"),("CYCLE","TIME","none")], 

   273

                    "outputs" : [("BUSY","BOOL","none"),("XOUT","REAL","none")],

   274

                    "comment" : _("Ramp\nThe RAMP function block is modelled on example given in the standard."),

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                    "generate" : generate_block, "initialise" : initialise_block},

   276

                {"name" : "HYSTERESIS", "type" : "functionBlock", "extensible" : False, 

   277

                    "inputs" : [("XIN1","REAL","none"),("XIN2","REAL","none"),("EPS","REAL","none")], 

   278

                    "outputs" : [("Q","BOOL","none")],

   279

                    "comment" : _("Hysteresis\nThe hysteresis function block provides a hysteresis boolean output driven by the difference of two floating point (REAL) inputs XIN1 and XIN2."),

   280

                    "generate" : generate_block, "initialise" : initialise_block},

   281

##                {"name" : "RATIO_MONITOR", "type" : "functionBlock", "extensible" : False, 

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##                    "inputs" : [("PV1","REAL","none"),("PV2","REAL","none"),("RATIO","REAL","none"),("TIMON","TIME","none"),("TIMOFF","TIME","none"),("TOLERANCE","BOOL","none"),("RESET","BOOL","none"),("CYCLE","TIME","none")], 

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##                    "outputs" : [("ALARM","BOOL","none"),("TOTAL_ERR","BOOL","none")],

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##                    "comment" : _("Ratio monitor\nThe ratio_monitor function block checks that one process value PV1 is always a given ratio (defined by input RATIO) of a second process value PV2."),

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##                    "generate" : generate_block, "initialise" : initialise_block}

   286

                ]},

   287

             ]

   288

   289

   290

#-------------------------------------------------------------------------------

   291

#                           Data Types definitions

   292

#-------------------------------------------------------------------------------

   293

   294

"""

   295

Ordored list of common data types defined in the IEC 61131-3

   296

Each type is associated to his direct parent type. It defines then a hierarchy

   297

between type that permits to make a comparison of two types

   298

"""

   299

TypeHierarchy_list = [

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    ("ANY", None),

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    ("ANY_DERIVED", "ANY"),

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    ("ANY_ELEMENTARY", "ANY"),

   303

    ("ANY_MAGNITUDE", "ANY_ELEMENTARY"),

   304

    ("ANY_BIT", "ANY_ELEMENTARY"),

   305

    ("ANY_NBIT", "ANY_BIT"),

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    ("ANY_STRING", "ANY_ELEMENTARY"),

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    ("ANY_DATE", "ANY_ELEMENTARY"),

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    ("ANY_NUM", "ANY_MAGNITUDE"),

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    ("ANY_REAL", "ANY_NUM"),

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    ("ANY_INT", "ANY_NUM"),

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    ("ANY_SINT", "ANY_INT"),

   312

    ("ANY_UINT", "ANY_INT"),

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    ("BOOL", "ANY_BIT"),

   314

    ("SINT", "ANY_SINT"),

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    ("INT", "ANY_SINT"),

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    ("DINT", "ANY_SINT"),

   317

    ("LINT", "ANY_SINT"),

   318

    ("USINT", "ANY_UINT"),

   319

    ("UINT", "ANY_UINT"),

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    ("UDINT", "ANY_UINT"),

   321

    ("ULINT", "ANY_UINT"),

   322

    ("REAL", "ANY_REAL"),

   323

    ("LREAL", "ANY_REAL"),

   324

    ("TIME", "ANY_MAGNITUDE"),

   325

    ("DATE", "ANY_DATE"),

   326

    ("TOD", "ANY_DATE"),

   327

    ("DT", "ANY_DATE"),

   328

    ("STRING", "ANY_STRING"),

   329

    ("BYTE", "ANY_NBIT"),

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    ("WORD", "ANY_NBIT"),

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    ("DWORD", "ANY_NBIT"),

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    ("LWORD", "ANY_NBIT")

   333

    #("WSTRING", "ANY_STRING") # TODO

   334

]

   335

   336

TypeHierarchy = dict(TypeHierarchy_list)

   337

   338

"""

   339

returns true if the given data type is the same that "reference" meta-type or one of its types.

   340

"""

   341

def IsOfType(type, reference):

   342

    if reference is None:

   343

        return True

   344

    elif type == reference:

   345

        return True

   346

    else:

   347

        parent_type = TypeHierarchy[type]

   348

        if parent_type is not None:

   349

            return IsOfType(parent_type, reference)

   350

    return False

   351

   352

"""

   353

returns list of all types that correspont to the ANY* meta type

   354

"""

   355

def GetSubTypes(type):

   356

    return [typename for typename, parenttype in TypeHierarchy.items() if not typename.startswith("ANY") and IsOfType(typename, type)]

   357

   358

   359

DataTypeRange_list = [

   360

    ("SINT", (-2**7, 2**7 - 1)),

   361

    ("INT", (-2**15, 2**15 - 1)),

   362

    ("DINT", (-2**31, 2**31 - 1)),

   363

    ("LINT", (-2**31, 2**31 - 1)),

   364

    ("USINT", (0, 2**8 - 1)),

   365

    ("UINT", (0, 2**16 - 1)),

   366

    ("UDINT", (0, 2**31 - 1)),

   367

    ("ULINT", (0, 2**31 - 1))

   368

]

   369

   370

DataTypeRange = dict(DataTypeRange_list)

   371

   372

   373

   374

#-------------------------------------------------------------------------------

   375

#                             Test identifier

   376

#-------------------------------------------------------------------------------

   377

   378

   379

   380

# Test if identifier is valid

   381

def TestIdentifier(identifier):

   382

     if identifier[0].isdigit():

   383

        return False

   384

     words = identifier.split('_')

   385

     for i, word in enumerate(words):

   386

         if len(word) == 0 and i != 0:

   387

             return False

   388

         if len(word) != 0 and not word.isalnum():

   389

             return False

   390

     return True

   391

   392

   393

#-------------------------------------------------------------------------------

   394

#                        Standard functions list generation

   395

#-------------------------------------------------------------------------------

   396

   397

   398

"""

   399

take a .csv file and translate it it a "csv_table"

   400

"""            

   401

def csv_file_to_table(file):

   402

    return [ map(string.strip,line.split(';')) for line in file.xreadlines()]

   403

   404

"""

   405

seek into the csv table to a section ( section_name match 1st field )

   406

return the matching row without first field

   407

"""

   408

def find_section(section_name, table):

   409

    fields = [None]

   410

    while(fields[0] != section_name):

   411

        fields = table.pop(0)

   412

    return fields[1:]

   413

   414

"""

   415

extract the standard functions standard parameter names and types...

   416

return a { ParameterName: Type, ...}

   417

"""

   418

def get_standard_funtions_input_variables(table):

   419

    variables = find_section("Standard_functions_variables_types", table)

   420

    standard_funtions_input_variables = {}

   421

    fields = [True,True]

   422

    while(fields[1]):

   423

        fields = table.pop(0)

   424

        variable_from_csv = dict([(champ, val) for champ, val in zip(variables, fields[1:]) if champ!=''])

   425

        standard_funtions_input_variables[variable_from_csv['name']] = variable_from_csv['type']

   426

    return standard_funtions_input_variables

   427

   428

"""

   429

translate .csv file input declaration into PLCOpenEditor interessting values

   430

in : "(ANY_NUM, ANY_NUM)" and { ParameterName: Type, ...}

   431

return [("IN1","ANY_NUM","none"),("IN2","ANY_NUM","none")] 

   432

"""

   433

def csv_input_translate(str_decl, variables, base):

   434

    decl = str_decl.replace('(','').replace(')','').replace(' ','').split(',')

   435

    params = []

   436

   437

    len_of_not_predifined_variable = len([True for param_type in decl if param_type not in variables])

   438

   439

    for param_type in decl:

   440

        if param_type in variables.keys():

   441

            param_name = param_type

   442

            param_type = variables[param_type]

   443

        elif len_of_not_predifined_variable > 1:

   444

            param_name = "IN%d"%base

   445

            base += 1

   446

        else:

   447

            param_name = "IN"

   448

        params.append((param_name, param_type, "none"))

   449

    return params

   450

   451

   452

ANY_TO_ANY_LIST=[

   453

        # simple type conv are let as C cast

   454

        (("ANY_INT","ANY_BIT"),("ANY_NUM","ANY_BIT"), ("return_type", "__move_", "IN_type")),

   455

        (("ANY_REAL",),("ANY_REAL",), ("return_type", "__move_", "IN_type")),

   456

        # REAL_TO_INT

   457

        (("ANY_REAL",),("ANY_SINT",), ("return_type", "__real_to_sint", None)),

   458

        (("ANY_REAL",),("ANY_UINT",), ("return_type", "__real_to_uint", None)),

   459

        (("ANY_REAL",),("ANY_BIT",), ("return_type", "__real_to_bit", None)),

   460

        # TO_TIME

   461

        (("ANY_INT","ANY_BIT"),("ANY_DATE","TIME"), ("return_type", "__int_to_time", None)),

   462

        (("ANY_REAL",),("ANY_DATE","TIME"), ("return_type", "__real_to_time", None)),

   463

        (("ANY_STRING",), ("ANY_DATE","TIME"), ("return_type", "__string_to_time", None)),

   464

        # FROM_TIME

   465

        (("ANY_DATE","TIME"), ("ANY_REAL",), ("return_type", "__time_to_real", None)),

   466

        (("ANY_DATE","TIME"), ("ANY_INT","ANY_NBIT"), ("return_type", "__time_to_int", None)),

   467

        (("TIME",), ("ANY_STRING",), ("return_type", "__time_to_string", None)),

   468

        (("DATE",), ("ANY_STRING",), ("return_type", "__date_to_string", None)),

   469

        (("TOD",), ("ANY_STRING",), ("return_type", "__tod_to_string", None)),

   470

        (("DT",), ("ANY_STRING",), ("return_type", "__dt_to_string", None)),

   471

        # TO_STRING

   472

        (("BOOL",), ("ANY_STRING",), ("return_type", "__bool_to_string", None)),

   473

        (("ANY_BIT",), ("ANY_STRING",), ("return_type", "__bit_to_string", None)),

   474

        (("ANY_REAL",), ("ANY_STRING",), ("return_type", "__real_to_string", None)),

   475

        (("ANY_SINT",), ("ANY_STRING",), ("return_type", "__sint_to_string", None)),

   476

        (("ANY_UINT",), ("ANY_STRING",), ("return_type", "__uint_to_string", None)),

   477

        # FROM_STRING

   478

        (("ANY_STRING",), ("BOOL",), ("return_type", "__string_to_bool", None)),

   479

        (("ANY_STRING",), ("ANY_BIT",), ("return_type", "__string_to_bit", None)),

   480

        (("ANY_STRING",), ("ANY_SINT",), ("return_type", "__string_to_sint", None)),

   481

        (("ANY_STRING",), ("ANY_UINT",), ("return_type", "__string_to_uint", None)),

   482

        (("ANY_STRING",), ("ANY_REAL",), ("return_type", "__string_to_real", None))]

   483

   484

   485

BCD_TO_ANY_LIST=[

   486

        (("BYTE",),("USINT",), ("return_type", "__bcd_to_uint", None)),

   487

        (("WORD",),("UINT",), ("return_type", "__bcd_to_uint", None)),

   488

        (("DWORD",),("UDINT",), ("return_type", "__bcd_to_uint", None)),

   489

        (("LWORD",),("ULINT",), ("return_type", "__bcd_to_uint", None))]

   490

   491

   492