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4. HOW TO MONITOR REDUNTANT SYSTEM
4.8 Connection to the Redundant Type Extension Base Unit
4 - 25
1
PREPARATORY
PROCEDURES FOR
MONITORING
2
DEVICE RANGE
THAT CAN BE SET
3
ACCESS RANGE
FOR MONITORING
4
HOW TO MONITOR
REDUNTANT
SYSTEM
5
BUS CONNECTION
6
DIRECT
CONNECTION TO
CPU
7
COMPUTER LINK
CONNECTION
8
ETHERNET
CONNECTION
4.8 Connection to the Redundant Type Extension Base
Unit
4.8.1 Computer link connection (Connection to the Serial communication module
mounted on the redundant type extension base unit)
This section explains the computer link connection for connecting the GOT to the serial communication module mounted
on the redundant type extension base unit.
The following shows an example of connecting the GOT to the serial communication module mounted on the redundant
type extension base unit.
(1) Connection method
Connect the GOT to the serial communication module (QJ71C24N) mounted on the redundant type extension
base unit.
For details, refer to the following.
7. COMPUTER LINK CONNECTION
(2) GT Designer3 setting
Set GT Designer3 as follows.
(3) Monitoring target change when system switching occurs in a redundant system
When the system switching occurs, the GOT automatically changes the monitoring target to the PLC CPU
switched to the control system.
Setting item Settings Model
Controller Type
MELSEC-QnA/Q/QS, MELDAS C6*
MELSEC-QnA/Q, MELDAS C6*
Device setting
(Network setting)
Host Host
Q Redundant Setting Do not set the item.
Computer link
connection
Redundant type extension base unit
Monitor target
Control system
(System A)
GOT
Standby system
(System B)
Power supply
module
Power supply
module
Power supply
module
Q25PRHCPU
QJ71C24N
Q25PRHCPU
QJ71BR11
QJ71BR11
Empty
Empty
Empty
Empty
Empty
Empty
Empty