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Main Menu
Diagnostics
Redundant Overview
54
900 Control Station User Guide
Revision 9
May 2014
Item
Status
Possible Cause
Controller Action
Fix
LEAD I/O
COMM DIAG
GOOD
Normal operation
N/A
DATA LINK
FAILURE
•
Scanner2 address
switches are not in
the correct position
•
An I/O cable is
unplugged.
•
Cables are defective
or are not properly
shielded
•
If a hub is used, it
may be powered
down.
•
The Scanner2 is
powered down.
•
The Scanner2 is
defective
Controller continues
to run but is not able
to access the I/O on
the associated rack
1. Verify that the address
switches on the scanner 2 are
set correctly.
2. If a hub is used, check that all
cables are properly connected
to the hub, proper crossover
cables are used, that the hub
is powered, and it supports
100 Base-T.
3. Check cable shielding for
proper grounding and noise
immunity.
4. Make sure the cables have the
correct pin out.
5. Cycle power to the Scanner 2.
6. Cycle power to the hub.
7. Cycle power to the C70R.
8. Replace the expansion rack’s
scanner module.
9. Replace the expansion rack’s
power supply.
10. Replace the expansion rack.
11. Replace the main CPU.
HARDWARE
FAILURE
d)
The I/O interface has a
hardware failure.
Controller continues
to run but is not able
to access any I/O.
Replace the CPU.
PORT A/B CABLE
MISMATCH
The I/O cables from
CPUA and CPUB are
connected to the
wrong ports on the I/O
scanner CPU
Controller continues
to run but is not able
to access the I/O on
the associated rack
Swap the cables so that I/O A is
connected to I/O on CPUA and
I/O B is connected to I/O on
CPUB
PROTOCOL
MISMATCH
The firmware version
in the controller CPU is
not compatible with the
firmware version in the
I/O scanner
Controller continues
to run but is not able
to access the I/O on
the associated rack
Upgrade the firmware in the CPU
and/or scanner to be compatible
versions
LEAD I/O
COMM
STATUS
NO
COMMUNICATIONS
Possible causes are
defined by the LEAD
I/O COMM DIAG that
is being reported.
Controller continues
to run but is not able
to access the I/O on
the associated rack
See the fix defined for the LEAD
I/O COMM DIAG that is being
reported.
MARGINAL: PORT
I/O A
Rack communication
with CPU-A is
experiencing a high
error rate
Controller continues
to run but is
marginally
accessing the I/O
on the associated
rack
1. Check cable shielding for
proper grounding and noise
immunity.
2. Check connectors of all
cables.
3. If a hub/switch is being used,
verify that it is one that is
recommended by Honeywell
4. Replace cables.
Содержание ControlEdge 900 platform
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