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Release Notes: CODESYS Modbus 4.4.0.0

Key Issue Type Summary Resolution Note
MODBUS-201 Improvement

Modbus: rename device description and library according to Modbus organizations specification

Fixed
MODBUS-193 Bug

partially initialized (Server data modell) TableDefinitions lead to model checking error / access violation

Fixed
MODBUS-192 Bug

Modbus slaves are logged as connected even no connection exist is possible

Won't Fix [[GENERAL]]
The log messages are not equal. There are tow messages which are togged.
The behavior is not reproducible with another PLC. There is only one message "Connect failed".
Therefore the runtime implementation seems to be wrong.
MODBUS-188 Improvement

Modbus TCP Master: Socket Timeout obsolete

Fixed
MODBUS-187 Bug

Modbus Slave: Exception if Number of Input Bits or Coils is higher than 65528

Fixed
MODBUS-186 Improvement

ModbusFB library: fix docu bug ServerTCP max parallel client connections

Fixed
MODBUS-180 Epic

Modbus network redundancy

Fixed
MODBUS-178 Improvement

MODBUS Function Block Library - enable to use more than SysCom.SYS_COM_PORTS.SYS_COMPORT1 .. SYS_COMPORT4

Fixed
MODBUS-177 Bug

Modbus: Outdated Modbus logo

Fixed
MODBUS-176 Bug

ModbusFB Library: broken features - MODBUS RTU clients crippled to one COMPORT (just one SerialClient), multiple SerialServer sharing one COM-port is broken

Fixed
MODBUS-175 Improvement

allow SysComHandler to inherit log settings from ISysComUser

Fixed
MODBUS-174 Improvement

Change company and author of ModbusFB.library

Fixed [[COMPATIBILITY_INFORMATION]]
Company (and Author changed) so import of library in applications needs to be adapted.
MODBUS-173 Bug

Modbus: only 10 channels could be added but library parameter is set to 100

Fixed
MODBUS-171 Improvement

ModbusFB library: fix COM settings docu regarding number of data bits

Fixed
MODBUS-170 Improvement

ModbusFB library: improve ServerSerial error handling for SysComRead errors

Fixed
MODBUS-169 Improvement

ModbusFB library: improve logging at ServerSerial startup

Fixed
MODBUS-167 Bug

Modbus ASCII use / set Data-Bit Settings

Fixed