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I have this problem:
I try to setup a comunication between a modbus master simulator (www.modbustools.com) and a real ABB PLC slave (this PLC use the comunication modbus interface CI867).
When the master send a request (for example 03 Read Holding Registers) the PLC respondes with an exception: "04 Illegal Response Length". I try with other function codes and it's the same and I try with another simulator (Triangle MicroWorks) and it's the same...
Anyone have suggestions to solve this problem ?
I try to setup a comunication between a modbus master simulator (www.modbustools.com) and a real ABB PLC slave (this PLC use the comunication modbus interface CI867).
When the master send a request (for example 03 Read Holding Registers) the PLC respondes with an exception: "04 Illegal Response Length". I try with other function codes and it's the same and I try with another simulator (Triangle MicroWorks) and it's the same...
Anyone have suggestions to solve this problem ?