Intermicom Command Bits; Intermicom Channel Diagnostics; Simulating A Channel Failure - GE P4A Technical Manual

P54A/B/C/E
6.2.1

INTERMICOM COMMAND BITS

To test the InterMiCOM command bits, go to the INTERMICOM COMMS column and do the following:
1. Enter any test pattern in the Test Pattern cell in the by scrolling through and changing selected bits
between 1 and 0. The entered pattern is transmitted through the loopback.
2. Check that the IM Output Status cell matches the applied Test Pattern.
3. Check that all 8 bits in the IM Input Status cell are zero.
6.2.2

INTERMICOM CHANNEL DIAGNOSTICS

Check that the following cells in the INTERMICOM COMMS column all read OK.
Data CD Status
●
FrameSync Status
●
Message Status
●
Channel Status
●
6.2.3

SIMULATING A CHANNEL FAILURE

1. Simulate a failure of the communications link by breaking a connection and checking that some of these
cells show Fail.
2. Restore the communications loopback and ensure that the four diagnostic cells display OK.
Note:
Some or all of these cells show Fail depending on the communications configuration and the way the link has failed.
P54xMED-TM-EN-1
Chapter 20 - Commissioning Instructions
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