landon1010
Member
Hello new user here seeking some guidance. I have been given the task of polling data from a modbus slave (Thermo 43i Analyzer) using RS-232. Unfortunately I can not get the Read_Var function to work or the Modbus Serial IOScanner to work.... I am trying to read holding registers using modbus command 0x03. Any help would be much appreciated as the program (Ecostruxure Expert - Basic) does not have much for tutorials when it comes to establishing this communication.
Thanks
Thanks