Honeywell HC900 Installation And User Manual page 135

Table 27 - Controller Module Diagnostics
OI Screen OI Screen
Item Item Value
IO RACK
COMM FAIL
RACK SW
INCOMPATILITY
Revision 5
9/03
Number of Possible Cause
LED
Strobes
6 The Main CPU is
unable to successfully
communicate to an
expansion rack(C50
CPU only) that is in its
configuration.
6 The Main CPU
determined that its
software is not
compatible with the
scanner module.
HC900 Hybrid Controller Installation and User Guide
Diagnostics and Troubleshooting - User Interface
Control File Action
See RACK BACKPLANE
FAIL.
All associated module
diagnostics are set to
MODULE NO COMM.
Refer to MODULE NO
COMM diagnostic for
further details.
User Action
1. Verify that the
expansion rack
should be in the
configuration
2. Verify that the
jumpers on the
scanner are set up
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.
1. Upgrade the scanner
software either by
replacing the module
or doing a code-
download.
2. Update Main CPU
software either by
replacing the module
or doing a code
download.
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