5
REDUNDANT SYSTEM FUNCTIONS
5.4 Operation Mode Change Function
5 - 60
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) To change the operation mode back to backup mode, use the same GX
Developer that changed the mode from backup mode to separate mode.
If the control system CPU module, however, is powered off or is reset in
separate mode, the operation mode can be changed back to backup mode
using any GX Developer.
When different GX Developer is used to change the operation mode back to
backup mode, the error dialog box (Diagram 5.35) appears.
If the error dialog box appears, change GX Developer to the one used to
change the mode to separate mode or reset the control system CPU module.
3) The operation mode cannot be changed from separate mode to backup mode
using GX Developer when the control system CPU module operation is
stopped (the "RUN" LED of the CPU module is flashing).
4) Operation mode cannot be changed in the following situations:
• When standby system is powered off or the standby system CPU module
is being reset.
If the error dialog box (Diagram 5.36) appears on GX Developer, turn the
standby system on again or clear reset on the CPU module and then
change the operation mode.
• When the communication with the standby system is disabled due to
tracking cable disconnection.
If the error dialog box (Diagram 5.37) appears on GX Developer, check
the tracking cable connection and change the operation mode.
Diagram 5.35 Error Dialog Box Displayed on GX Developer
Diagram 5.36 Error Dialog Box Displayed on GX Developer
Diagram 5.37 Error Dialog Box Displayed on GX Developer
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