Mitsubishi Electric Melsec Q Series User Manual page 141

4
FUNCTIONS
(b) System switching due to a DP-Slave error
Bus terminator
Remark
The QJ71PB92V performs system switching when it detects a error in
communication with a DP-Slave.
Control system
New standby system
Communication
failure
DP-Slave
Figure 4.30 System Switching due to DP-Slave Error
To switch the systems due to an error in communication with a DP-Slave, specify
the system switching target DP-Slaves in the following buffer memory.
• System switching condition setting area (Disconnected station detection)
(Un\G23648 to Un\G23656) (
For the program example for setting the System switching condition setting area
(Disconnected station detection) (Un\G23648 to Un\G23656), refer to Section
7.9.1.
4.8 Redundant system support function
Standby system
New control system
Executes system
switching
Tracking cable
DP-Slave
Section 3.4.14)
Continues communication
Bus terminator
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