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Controller Diagnostics Diagnostics
Revision 9 900 Control Station User Guide 39
May 2014
Item Status Possible Cause Controller Action What to do
MODULE ERROR
One of the module
diagnostics in the
associated rack is set
to MISMATCH, BAD
MODULE, BAD
CHANNEL., or
MISSING/NO COMM
(if the
communications is
failing due to the
module not
installed—could occur
if the module is
installed but CPU
can’t communicate to
it).
Select I/O from the menu
to see details on the faulty
module. See I/O Module
Diagnostics on page 42.
Select I/O from the menu to see details
on the faulty module. See I/O Module
Diagnostics on page 42.
MODULE HI CJ
TEMP
One of the module
diagnostics in the
associated rack is set
to HI CJ
TEMPERATURE.
Select I/O from the menu
to see details on the faulty
module. See I/O Module
Diagnostics on page 42.
Select I/O from the menu to see details
on the faulty module. See I/O Module
Diagnostics on page 42.
FAILURE
The Controller
module is unable to
successfully
communicate to any
modules that are in its
SPI backplane.
All associated module
diagnostics are set to
MISSING/NO COMM.
See MISSING/NO COMM
in Table 22 I/O Module
Error Status on page 44 for
further details.
1. Remove modules and check for bent
pins on connectors.
2. Reinsert modules one at a time and
note which module the diagnostic
reoccurs, and replace that module.
3. Cycle power to the rack.
4. Replace the power supply.
5. Replace the rack.
6. Replace the CPU board.
NO COMM
The Main CPU is
unable to successfully
communicate to an
expansion rack that is
in its configuration.
See FAILURE.
1. Verify that the expansion rack should
be in the configuration
2. Verify that the jumpers on the
scanner are setup for the correct rack
address.
3. Check that expansion rack is on.
4. Check the expansion rack’s status
LED for diagnostic information.
5. Check that cable is connected to
expansion rack.
6. If a hub is used, check that all cables
are properly connected to the hub,
proper crossover cables are used, and
that hub is powered.
7. Cycle power to the rack.
8. Cycle power to the hub.
9. Replace the expansion rack’s power
supply.
10. Replace the expansion rack.
11. Replace the expansion rack’s
scanner board.
12. Replace the main CPU.
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