6
REDUNDANT SYSTEM NETWORKS
6.2 Redundant System Network Overview
6.2.4 CC-Link
6 - 32
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
(2) Redundant system Operation at the time of System Switching
(a) When System Switching Occurs due to Control System Error
When an error occurs in the control system and system switching occurs, the new
control system standby master station starts to operate as the master station and
takes over the control of the remote stations.
Diagram 6.26 shows the redundant system operation when a stop error occurs in
the control system CPU module.
Diagram 6.26 Operation at System Switching due to Control System Error
Master Station
(Station No. 0)
Standby Station
(Station No. 1)
Standby Master
Station Operation
(Station No. 1)
Master Station
Operation
(Station No. 0)
CC-Link
Remote I/O station
(station No. 2)
CC-Link
Remote I/O station
(station No. 2)
System A - Control System
System B - Standby System
Stop Error
System A - Control System
System B - Standby System
Tracking cable
Tracking cable
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