8
TROUBLESHOOTING
8.1 Troubleshooting Flow
8.1.8 When "CONTROL SYS. DOWN (error code: 6310 to 6312)" Occurred at Redundant System Startup
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1
OVERVIEW
2
SYSTEM
CONFIGURATION
3
TRACKING CABLE
4
PROCEDURE FOR
STARTING UP A
REDUNDANT SYSTEM
5
REDUNDANT SYSTEM
FUNCTIONS
6
REDUNDANT SYSTEM
NETWORKS
7
PROGRAMMING
CAUTIONS
8
TROUBLESHOOTING
8.1.8 When "CONTROL SYS. DOWN (error code: 6310 to 6312)" Occurred
at Redundant System Startup
(1) "CONTROL SYS. DOWN" occurrence conditions
"CONTROL SYS. DOWN" occurs when either of the following operations is performed
until the BACKUP LED is lit green during a startup of the redundant system.
• Either system was powered off.
• The CPU module in either system was reset and then its RESET switch was set
to the neutral position.
(2) Corrective action for "CONTROL SYS. DOWN"
If "CONTROL SYS. DOWN " has occurred during a startup of the redundant system,
restart the system by performing either of the following operations.
(a) Power on System A and System B again
1) Power on System A and System B again simultaneously.
2) The System A CPU module starts as a control system and the System B CPU
module as a standby system.
(b) Set the RESET switches of System A and System B CPU modules to the
neutral position simultaneously
1) Reset the System A and System B CPU modules and then set their RESET
switches to the neutral position simultaneously.
2) The System A CPU module starts as a control system and the System B CPU
module as a standby system.
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