Hello CJ,
This forum is great, but it is actually pretty hard to provide support at times without being able to copy and paste information.
If we had received this over
[email protected], we would have pretty quickly asked you to highlight the GSU25 and magnetometer and provide screen shots of the lower window with those devices highlighted.
A red-x in that upper window doesn't always mean no communication, but since you didn't report that the green status LED on the GSU25 is flashing, it is probably not communicating properly and there is a CAN bus wiring or termination problem.
There is also a display of CAN ERROR RATE at the bottom of the lower window for each device which we always ask about. A good CAN connection will always show a 0% error rate.
Fortunately CAN bus problems are usually very easy to fix. As suggested above, we could benefit from knowing where the CAN bus starts and ends and knowing that the termination is only at those devices. Since you state that termination is at the GEA24 and the pitch servo, those two devices must be located at the extreme ends of the twisted pair CAN bus.
Contact us and I am sure we will get you going in no time.
Thanks,
Steve