Precautions For Using Annunciator (F) In Redundant System - Mitsubishi Q12PRHCPU User Manual

7
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.
Table7.6 Operations of Control System and Standby System CPU Modules When F10 Is Turned ON in Control System CPU Module
Item
F10 Annunciator
SM62 Annunciator detection
SD62 Annunciator No.
SD63 No. of annunciators
SD64
Annunciator detection
to
number table
SD79
"USER" LED
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.
LED status
USER
Program
M0
0 SET F10
LED status
USER
Program
M0
0 SET F10
7
- 14 7.3 Precautions for Using Annunciator (F) in Redundant System
Control System CPU Module
ON
ON
The annunciator No. turned on is stored.
Number of annunciators turned on is
stored.
The annunciator No. turned on is stored.
On
System A/Control system
System A/Control system
Standby system
Diagram 7.12 Operation of USER LED When Annunciator (F10) Turns On
System B/Standby system
Tracking cable
Annunciator tracking
System switching
System B/Control system
Standby system
Tracking cable
Standby System CPU Module
ON
OFF
No change
No change
No change
Off
LED status
USER
Program
M0
0 SET
LED status
USER
Program
M0
0 SET
F10
F10