PLC, brand: LS electrogenesis

Using the communication protocol Modbus Rtu, connection mode, computer Com1 port, three lines to connect PLC



Always prompt timeout, I written in c # code is timeout, using tools "modbus debugging elves" the same timeout

But matching with kingview can normal use, really don't understand,

CodePudding user response:

May not use the modbus protocol

CodePudding user response:

If it is the standard Modbus protocol, baud rate parity stop bit?