Mitsubishi Q12PRHCPU - 7.3 Precautions for Using Annunciator (F) in Redundant System

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7.3 Precautions for Using Annunciator (F) in Redundant System
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PROGRAMMING CAUTIONS
7.3 Precautions for Using Annunciator (F) in Redundant System
The annunciator defaults to no tracking.
In the tracking setting of the Redundant parameter dialog box, the annunciator can be set
to within the tracking range.
Table7.6 provides an operation example of the control system and standby system CPU
modules when the annunciator is set to within the tracking range and the annunciator
(F10) is turned ON in the control system CPU module.
If system switching occurs when the annunciator (F10) turns on in the control system CPU
module, whether the annunciator is on or not cannot be checked by the USER LED since
the USER LED is off in the new control system CPU module.
Table7.6 Operations of Control System and Standby System CPU Modules When F10 Is Turned ON in Control System CPU Module
Item Control System CPU Module Standby System CPU Module
F10 Annunciator ON ON
SM62 Annunciator detection ON OFF
SD62 Annunciator No. The annunciator No. turned on is stored. No change
SD63 No. of annunciators
Number of annunciators turned on is
stored.
No change
SD64
to
SD79
Annunciator detection
number table
The annunciator No. turned on is stored. No change
"USER" LED On Off
Diagram 7.12 Operation of USER LED When Annunciator (F10) Turns On
Tracking cable
System switching
Tracking cable
System A/Control system
Standby system
System A/Control system
System B/Standby system
Annunciator tracking
LED status
USER
Program
M0
0 SET F10
LED status
USER
Program
M0
0 SET F10
LED status
USER
Program
M0
0 SET F10
LED status
USER
Program
M0
0 SET F10
System B/Control system
Standby system