I have an AB 5/03 processor connected to an Automation Direct HMI via the DH485 port. The serial port is being used to send ASCII messages to an LED display board.
It's a giant hassle to connect to the plc with a pc and run the HMI at the same time due to having to reconfigure the serial port every time one wants to do so.
What would be the best way to connect the HMI and a PC via the DH 485 port so that the plc program can be monitored and accessed at the same the HMI is operating and connected?