Mitsubishi Q12PRHCPU - Page 199

5
REDUNDANT SYSTEM FUNCTIONS
5.7 Memory Copy From Control System To Standby System
5 - 116
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
5) When memory copy is complete, the "BACKUP" LED of the standby system
CPU module will turn on (red).
6) When memory copy is complete, restart the standby system or reset the
standby system CPU module. It will operate as the standby system CPU
module.
Then, the "BACKUP" LED of the standby system CPU module will turn on
(green).
Diagram 5.83 LED Indications at Memory Copy Completion
Diagram 5.84 LED Indications during Standby System CPU Module Operation
Q12PRHCPU
MODE
RUN
ERR.
USER
BAT.
BOOT
BACKUP
CONTROL
SYSTEM A
SYSTEM B
Q12PRHCPU
MODE
RUN
ERR.
USER
BAT.
BOOT
BACKUP
CONTROL
SYSTEM A
SYSTEM B
Control system CPU module Standby system CPU module
ON (red)
ON (red)
Flashing (red)
ON (red)
Q12PRHCPU
MODE
RUN
ERR.
USER
BAT.
BOOT
BACKUP
CONTROL
SYSTEM A
SYSTEM B
Q12PRHCPU
MODE
RUN
ERR.
USER
BAT.
BOOT
BACKUP
CONTROL
SYSTEM A
SYSTEM B
Control system CPU module Standby system CPU module
ON (red)
ON (green)
OFF
ON (green)