Freelance Modbus RTU unable to communicate
Hi, currently i am facing the problem of my Modbus RTU unable to communicate with FI820. Seperate from the previous question, this is another new RTU (RS-485) connection to a new controller in new location.
My modbus RTU (RS-485) Cable is a multi-drop cable the client is using this 1 cable to link to multiple devices of different slave IDs for Modbus.
I terminated the cable TxRx+ to TB870F point 20 & TxRx- to TB870F point 21, but still i am unable to get connection but when we used a connector to link to modbus simulator in my laptop the data is reading. Do I need to set any jumper in the FI820 card for RS-485 connection and also the TB870F card do i need to set anything? My controller is a redundant controller.
Insert the URL that your highlighted text will link to.
Copy the video's "embed" tag into Embedded Video below.