Rifet Posted June 3, 2019 Report Share Posted June 3, 2019 Hi there, this is my first time working with unitronix plc and I have some problems with understeanding how does modbus communication works. I am using visilogic 1210 plc and I want to read some parameters from Iskra FPC400. I want to use modbus because FPC400 only supports rs485 communication. First I did set up com port and configured modbus. (As you can see from pictures that I included) I want to read 27 parameters from FPC400 (As you can see from picture that I included, I want to read 27 parameters from adress 4112 - 4139 ) and store them in 27 different variables in my plc. (MI4000 - MI4027) As I understood, I need to set start of vector for reading variables as 4112 and length needs to be 27, and start of vector on my plc is 4000. Does this means that program will read 27 parameters and store them into my plc starting from MI 4000 to MI4027? Quote Link to comment Share on other sites More sharing options...
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