I have rrc-1258mk2 set and IC-7100 runs well.
Now I want to add CI-V cable for IC-7100, I make a TTL-CIV cable, just like the USER MANUAL of ICOM CI-V section.
1) in IC-7100 power off status, plug this CI-V cable to rrc-radio TTL port and IC-7100 remote port, then can't power on the IC-7100 from remote panel, but I check the status carefully, I found the IC-7100 was ON, just the IC-7100 screen was OFF, because the orange LED of AUX/MIC was on, and all status from RRC-control and RRC-radio web page were OK!
2) in IC-7100 power on status, plug CI-V cable, the IC-7100 still running, screen still on, but any operation from panel was not respond.
Anybody use IC-7100 with CI-V cable, any special setting? Thanks.