check_errors ( decoder, message ) except Exception, ex : self. encode ( 'hex' ) print '=' * 80 print 'Decoding Message %s ' % value print '=' * 80 decoders = for decoder in decoders : print ' %s ' % decoder.

encode = encode def decode ( self, message ): ''' Attempt to decode the supplied message :param message: The messge to decode ''' value = message if self.

getLogger ( 'pymodbus' ) #-# build a quick wrapper around the framers #-# class Decoder ( object ): def _init_ ( self, framer, encode = False ): ''' Initialize a new instance of the decoder :param framer: The framer to use :param encode: If the message needs to be encoded ''' self. #!/usr/bin/env python ''' Modbus Message Parser - The following is an example of how to parse modbus messages using the supplied framers for a number of protocols: * tcp * ascii * rtu * binary ''' #-# import needed libraries #-# import sys import collections import textwrap from optparse import OptionParser from pymodbus.utilities import computeCRC, computeLRC from pymodbus.factory import ClientDecoder, ServerDecoder from ansaction import ModbusSocketFramer from ansaction import ModbusBinaryFramer from ansaction import ModbusAsciiFramer from ansaction import ModbusRtuFramer #-# Logging #-# import logging modbus_log = logging. The contents of the eightĮxception Status outputs are device specific. In the least significant bit of the byte. The status of the lowest output reference is contained The outputs are packed into one data byte, with one bit The normal response contains the status of the eight Exception Status Known (no output reference is needed in the function). The function provides a simple method forĪccessing this information, because the Exception Output references are

This function code is used to read the contents of eight Exception Status

Modbus rtu parser