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RELEASE_NOTES.md

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Version 2.0-rc1

  • RxTxComm has been successfully replaced with jSerialComm and tested with RTU
  • The whole codebase has been re-vamped to use modern constructs and practises, not a single class has remained untouched
  • Codebase is compatible with JDK 1.6
  • Javadoc has been extensively improved and fixed
  • A logging framework (log4j) has been included with a wrapper to improve performance and allow token passing
  • We have some tests!! Unit tests have been added for all automation friendly protocols (UDP and TCP)
  • Unit tests have been added that independently verify the j2mod TCP Slave functionality
  • Threading and concurrency has been hugely improved - removed synchronisation errors and corrected the handling of thread shutdown
  • Brought some sanity to the Facade package so that it is now usable in a production setting
  • Removed the serial BIN transport - it was proprietary and not taken up by any hardware vendors that I could find
  • Fixed the UDP transport for both Master and Slave so that it is some way approaching robust
  • Fixed the code layout - everything has headers, the layout is consistent, variable names and scope make sense etc.
  • Build system incorporates GPG signing and is compatible with one-click deployment to Maven Central through Sonatype

Version 2.0-rc2

  • Added ability to specify timeout for Facade classes 'ModbusTCPMaster', 'ModbusUDPMaster' and 'ModbusSerialMaster'
  • Fixed all the Unit ID checking when running as a Slave (myriad of problems - cannot see how it has ever worked)

Version 2.0-rc3

  • Fixed the timeouts for UDP/TCP and Serial listeners
  • Added more test cases

Version 2.0-rc4

  • Fixed an issue with the TCPTransaction class not initialising the Transport correctly
  • Removed all redundant casts
  • Made Transport available from Facade classes so that listeners can be added for Serial events

Version 2.0-rc5

  • Serial timeouts were being applied to a null transport

Version 2.0

  • Replaced log4j with slf4j

Version 2.1

  • Corrections to ASCII transport - thanks transparentink
  • Added fix for infinite listening loop - thanks martentamerius
  • Removed duplicate request handling code
  • Fix unit tests on linux #9 - thanks martentamerius
  • Improved logging of errors and warnings with stack trace #10 - thanks martentamerius
  • Facilitate multiple processimages in ModbusCoupler. #11 - thanks martentamerius
  • WriteMultipleRegisters (Function Code : 0x10) does not work. #14 - chnaged use of signed shorts to unsigned
  • Serial/RTU slower on 2.x #16 - worked around an issue with jSerialComm where setting timeouts on an open port injected a 200ms delay

Version 2.1.1

  • Corrected a problem with applying the timeouts when using the facade pattern

Version 2.1.2

  • Retrieve the localPort from opened socket if port is set to 0 #19
  • CR characters lost on ModbusSerialTransport #18
  • Corrected timeout setting issues on serial ports and harmonised setting timeout with IP methods

Version 2.1.3

  • Added support for Modbus RTU over TCP #21 - thanks axuan25
  • Code requires guards around a number of the functions #22

Version 2.2.0

  • Modbus Slave Multiple Port Support #23
  • Set ModbusCoupler to deprecated in favour of the new ModbusSlaveFactory and ModbusSlave sub-system
  • Fixed some javadoc errors - thanks jan
  • Timeout error on socket listener - thanks jan
  • Now allows for slaves to share same socket but different protocols

Version 2.2.1

  • Amend TCPMasterConnection socket timeout handling #27 - thanks David

Version 2.2.2

  • Fixed NPE in close method of SerialConnection if Comms port was never successfully opened

Version 2.3.0

  • Adjusted write timers with fiddle factors to allow for idiosyncratic hardware
  • jSerialComm library decoupled from implementation #28 - thanks Felipe

Version 2.3.1

  • Length of ReadWriteMultipleResponse indicates 1 byte too much? #31 - thanks elasticoder
  • Function code 0x17 first performs a read and then the write. #32 - thanks elasticoder
  • Double socket creation in ModbusTCP. #33 - thanks stoorm5

Version 2.3.2

  • Increased maximum queue length for incoming connections. #38 - thanks martentamerius
  • Incorrect javadoc for ModbusSlaveFactory #35 - thanks bertrik
  • Adds setRetries and setCheckingValidity services into ModbusTCPMaster #30 - thanks ericauguie
  • Added RTU over TCP #43 - thanks eli-mcgowan
  • Fixed setting timeout of TCPMaster does not get applied to transactions #41
  • Reduce an NPE - Serial port connection #40
  • Fixed issue with serial write bytes delay if data bits not specified

Version 2.3.3

  • Specify IP address in ModbusSlaveFactory #46 - thanks MindVark
  • Added getConnection() to AbstractSerialConnection - thanks nnadeau
  • Reading full stream instead of parts - thanks liebehentze