CMUip-2212 Cabinet Monitor Unit
Operations Manual
Eberle Design Inc.
Page 9
The Field Output Check function is enabled for each channel input individually and provides
two modes of operation, Field Check Mode and Field Check Status.
2.13.1 FIELD CHECK MODE
The CMUip-2212 will compare the active states of the field signals with the states reported
by the ATC in the Type 81 (67) frame. When a mismatch is detected for less than the No
Fault time (section 5.2) the CMUip-2212 will not cause a LFSA. When a mismatch is
detected for greater than the Fault time (section 5.2), the CMUip-2212 will cause a LFSA.
The Field Check Mode is typically caused by a miss-wired or improperly configured cabinet.
When the Field Check Mode is detected the FIELD CHECK front panel indicator will be
illuminated solid.
Field Output Check monitoring will be disabled when the MC COIL STATUS input is not
active. There is programming in the Datakey to disable Field Output Check monitoring on a
channel input basis.
2.13.2 FIELD CHECK STATUS
The CMUip-2212 will compare the active states of the field signals with the states reported
by the CU in the Type 81 (67) frame. When a mismatch is detected while a Conflict, Lack of
Signal, or Multiple fault is timing, Field Check Status will be reported with the fault to
indicate the faulty channel(s) and color(s).
If a Conflict, Lack of Signal, or Multiple fault has triggered the CMUip-2212 to the fault
mode and the CMUip-2212 indicates that there is no Field Check Status, the ATC or ATC
programming is the most likely cause. The lack of Field Check Status indicates the ATC
drove the signals to an improper state. If a Conflict, Lack of Signal, or Multiple fault has
triggered the CMUip-2212 to the fault mode and the CMUip-2212 indicates that there is
Field Check Status, then cause of the malfunction can be isolated to the SIU, load switch,
field wiring, or signal load.
When Field Check Status is detected the FIELD CHECK front panel indicator will be flash
at a 2Hz rate.
Field Output Check monitoring will be disabled when the MC COIL STATUS input is not
active. There is programming in the Datakey to disable Field Output Check monitoring on a
channel input basis.
2.14 DIAGNOSTIC ERROR
The CMUip-2212 is provided with a resident series of self-check diagnostic capabilities.
When a Diagnostic fault is detected, a LFSA-R will be set and the DIAGNOSTIC indicator
illuminated. Should a Diagnostic error occur, other fault indicators that may be concurrently
displayed with the DIAGNOSTIC indicator may not be valid due to the nature of these
hardware and/or firmware failures.
2.14.1 RAM MEMORY DIAGNOSTIC
This test will verify that all RAM elements are operating correctly at power-up or following a
Unit Reset.
2.14.2 NONVOLATILE MEMORY DIAGNOSTIC
This test will verify that the nonvolatile flash ROM and event log eeprom contain the proper
data. The routine will perform a check on each ROM device and make a comparison with a
check value.
