ABB REL511 relay v1.2 no connection

We have ABB REL 511 v1.2 relays that do not operate often. Recently there was a large outage and these relays operated. We went to recover disturbance records without success. We took the special front port cable, dowonloaded the CAP 540 software from the ABB site and installed on a PC running a Windows XP emulator in order to open it. We set the communications settings to match the relay protocol , address etc according to the CAP 540 manual but we still cannot connect. We saw in the relay menu that you need to activate the front and this still did not work. Is there anyone that can make a suggestion as to what we can do next? Thanks in advance.