megamind
Member
I was trying to connect an HMI and a LED MEssage Display Screen to my PLC. My PLC has two serial port supporting Modbus. Unfortunately one of the serial port can act as a slave only. SO my question is, can I connect the LED message Display screen to the slave only serial port. I think we can only send the message to the LED screen only if the PLC is master. All three components support the Modbus protocol. Or can I connect my LED display to My HMI?
Any help would be Highly appreciated. Thank you.
Any help would be Highly appreciated. Thank you.