26 REDUNDANT FUNCTION
26.7 Redundant System Operation Setting
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26
26.7 Redundant System Operation Setting
Set the redundant system operation in the redundant system settings of the CPU parameter.
[CPU Parameter] [Redundant System Settings]
*1 Before enabling the setting to wait cyclic data receive after system switching, check the versions of the CPU module, CC-Link IE Field
Network module, and engineering tool used. ( Page 747 Added and Enhanced Functions)
*2 This setting is invalid in a redundant system with redundant extension base unit. (The system that has started up first starts up as a
control system regardless of this setting.)
Item Description Setting range Default
Watching Standby System
Setting
Set this item not to detect continuation errors when:
• A Communication error with the other system has occurred or communications with the other
system has been disabled.
• The CPU module of the standby system is off, has been reset, or a stop error has occurred.
This item is enabled only for the CPU module of the control system.
• Disable
• Enable
Enable
Standby System Output
Setting
Set this item to enable the output (Y) from the standby system for system inspection or
adjustment in the standby system in backup mode.
Even though this parameter setting has been set to "Disable" in separate mode, the output (Y) is
enabled.
• To diagnose devices that are connected to the standby system by using a both systems
execution program, set "Enable". However, set the standby system output setting to "Disable"
when common devices have been connected to both the control system and standby system.
• When "Enable" is set, do not specify outputs (Y) to be used in the standby system as the data
to be tracked. If such an operation is performed, the outputs (Y) are overwritten with the control
system data and output from the standby system. (Even when the CPU module of the standby
system is in the STOP state, the output (Y) received in tracking transfer is output.)
• Disable
• Enable
Disable
Backup Mode Setting Page 416 Operating status
Auto Memory Copy Setting Page 407 Auto memory copy
Control/
Standby
System
Start-up
Setting
*2
Other system
Start-up
Timeout Setting
Set a timeout time taken until communications with the other system are enabled after the own
system is started up and the initial processing is completed.
• When "Set" is selected, a stop error will occur in the own system unless communications are
performed with the other system even though the timeout time has come.
• When "Not Set" is set, the own system will wait until communications with the other system are
established.
•Not Set
•Set
Set
Time-out Period 3 to 1800s (in
increments of
1s)
60s
Control System
Start-up Setting
(Switch
Operation)
Set this item to enable the operation to be started in the control system with the switch operation
(RUNSTOPRUN) while the own system that has started is waiting for the start-up of the
other system.
• Disable
• Enable
Disable
Control System
Start-up Setting
(Input (X))
Set this item to enable the operation to be started in the control system with the contact input (X)
while the own system that has started is waiting for the start-up of the other system.
• Disable
• Enable
Disable
Input (X) X0 to X2FFF
Setting to Wait Receiving
Cyclic Data after Switching
System
*1
Set this item to wait for the execution of the sequence program until all CC-Link IE Field Network
modules on the main base unit receive the latest cyclic data after system switching.
Page 427 Setting to wait cyclic data receive after system switching
• Disable
• Enable
Disable
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