The AccessMODBUS Gateway (Modbus Gateway) always responds with value 0 to requests for variables from sub projects.

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• The zenon runtime shows unexpected behaviour when a high amount of value changes of variables of the Modbus Process Gateway (AccessMODBUS) take place. This is the case when in addition to the value changes also the number of variables which the Modbus Process Gateway contains is very high.

  Summary When the Modbus Process gateway (AccessMODBUS) contains a high amount of variables and the values of these are changing very fast, the zenon runtime behaves unexpectedly. DescriptionWhen the Modbus Process gateway (AccessMODBUS) contains a ...

• When using the AccessMODBUS Gateway (MODBUS Process Gateway) containing a zenon variable which is no longer available in zenon, the AccessMODBUS gateway shows unexpected behaviour when a modbus master writes a value to any variable which is or was configured in the AccessMODBUS gateway.

  Summary The AccessMODBUS gateway (MODBUS Process Gateway) shows unexpected behaviour when it contains a variable which is no longer available in zenon and a modbus master sends a write request for any variable which is or was configured in ...

• AccessModbus: zenon process gateway closes when an invalid modbus request is received

  Summary The Accessmodbus process gateway returns a modbus exceptionerror when an invalid modbus request is received Description The Accessmodbus process gateway returns a modbus exceptionerror when an invalid modbus request is received Issue Number: ...

• The Modbus Process gateway (AccessMODBUS) should support unit IDs higher than 127.

  Summary Unit IDs higher than 127 should be supported by the Modbus Process gateway (AccessMODBUS) DescriptionUnit IDs higher than 127 should be supported by the Modbus Process gateway (AccessMODBUS) Solution This issue has been addressed by ...

• Modbus process gateway closes immediately after startup under specific circumstances

  Summary The modbus process gateway closes immediately after startup with an unhandled exception when the runtime is running multiple projects and there is at least one project for which no variable is configured in modbus slave of the process ...