120 TimeCreator 1000 User’s Guide 097-93100-01 Revision C – February, 2010
Chapter 6 Maintenance and Troubleshooting
Diagnosing the IOC
Replacing the IOC
This section contains procedures for replacing IOC in three circumstances:
Replacing the only IOC in a shelf
Replacing one of two IOCs in a shelf
Replacing both IOCs in a shelf
Replacing the Only IOC
To replace the only IOC in a shelf, use the following procedure. Output signals will
resume once the IOC has achieved normal operating state. This procedure
assumes that you have stored the contents of the IOC memory in the IMC using the
Set Configuration Backup IOC command.
1. Attach a wrist grounding strap and connect it to the TimeCreator 1000 chassis.
2. Install the IOC into the shelf and tighten the captive retaining screws.
3. Copy the contents of the IOC memory stored in the IMC by issuing the following
command.
Type
set configuration restore ioc and press Enter.
If you have not stored the contents of the IOC memory in the IMC, then provision
the IOC using the procedures and commands described in Chapter 5, Provisioning.
4. Wait for the IOC to reboot and achieve normal operating state.
Replacing a Redundant IOC
To replace either of two IOCs in a shelf, use the following procedure. Output signals
will not be affected by this procedure. You can also use this procedure to add an
IOC to a shelf that has only one IOC.
1. Install the IOC into the shelf and tighten the captive retaining screws.
2. Wait for the IOC to reboot and achieve the normal operating state. During this
time the Active IOC updates the new IOC’s memory with current values.
Replacing Both IOCs
Use this procedure to replace both IOCs in a shelf. Output signals will resume when
the Active IOC has warmed up and qualified the reference signals. This procedure
assumes that you have stored the contents of the IOC memory in the IMC using the
Set Configuration Backup IOC command.
1. Attach a wrist grounding strap and connect it to the TimeCreator 1000 chassis.
2. Install the IOC into the left slot of the shelf and tighten the captive retaining
screws. This IOC will become the Active IOC.
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