Hi all. Can somebody help me in understanding the role of Memory Mapping when implementing Modbus with 2 devices of diffrent manufacturers? e.g. I want to read 3 diffrent types of register memories (%r, %p, %w, etc.) from GE fanuc PLC using modbus. I will send Modbus command from some other PLC (e.g. Siemens) to read this memory. What kind of memory structure is required to implement this?