Hi, guys.
I'm working on Doosan robot for vision system.
I had communication with PLC by profinet.
I can see signal on PLC from robot. But I can't get a signal from PLC. Also, input is inactive on normal I/O menu. Is it always inactive for input? Because I can select output and I can change.
I don't know what I missed to setup between PLC and robot. Is it PLC setting problem? 
