Mitsubishi Electric Melsec Q Series User Manual page 139

4
FUNCTIONS
(2) System switching error (System switching methods)
There are the following cases where system switching occurs by an error.
Switching by system switching request from QJ71PB92V (2)(a) and (2)(b) in this section
Switching by system switching request from other
network module than QJ71PB92V
System switching when a fault occurs in the control
system
System switching using GX Works2
System switching by system switching instruction
(a) System switching due to a QJ71PB92V error
Bus terminator
Table4.8 System Switching Methods
Method
The QJ71PB92V performs system switching when it detects a error that disables
the system operation.
Control system
QJ71PB92V
New standby system
DP-Slave (QJ71PB93D)
Figure 4.29 System Switching due to QJ71PB92V Error
4.8 Redundant system support function
User's manual for the redundant system
for the CPU module used
Standby system
Error in
New control system
Executes system
switching
Tracking cable
DP-Slave (ST1H-PB)
Reference
Continues communication
Bus terminator
21
.
4
- 30
1
2
3
4
5
6
7
8