How to resolve the problem of communication between REF650 and RTU560 on 61850
In my 61850 substation project, I could'nt establish communication between REF650 and RTU560. The wiring is like described below:
All IED are connected to switch with FO and the LEDs of ports are lighted in green.
The Switch is connected to RTU560 on 560NUS12
560CMU/port E1 is connected to 560NUS12 card.
To ensure that the configuration is OK, can i connect one IED to the port of 560NUS12 card or 560CMU05 card without use switch?
How can i test the network step by step to confirm if the problem is located in the hardward ( FO cable, swith, ports) or configuration ( data base)?