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SHDW-CIR (Common Shadow Circuit)
Issue 4 May 2002 10-1489 555-233-123
Common Shadow Circuit M-Bus Time-Out Query
Test (#285)
An M-BUS time-out occurs when the Common Shadow Circuit on the Standby
SPE attempts a memory write to the Memory circuit pack via the M-BUS and the
write fails. The Common Shadow Circuit M-BUS Time-Out Query first tries to
refresh the Standby SPE memory and then queries the Common Shadow Circuit
on the Standby Duplication Interface circuit pack for the number of M-BUS
time-outs. If there were any M-BUS time-outs, the test fails.
Table 10-569. TEST #285 Common Shadow Circuit M-BUS Time-Out Query Test
Error Code
Test
Result Description/Recommendation
1029 1030
2011 2012
2014 2015
2016 2017
2018 2019
2020 2021
2022 2023
2024 2025
2051 2054 ABORT Refer to the STBY-SPE Maintenance documentation for a
description of these error codes.
1960 ABORT The active SPE is currently locked on-line or one of the
DUPINT circuit packs is missing or broken.
1. If the active SPE is locked on-line, move the SPE select
switches back to the AUTO position and rerun the test.
2. If the active SPE is not locked on-line, check for
DUPINT errors and resolve those before rerunning the
test.
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