4.2.2When using two GOTs

Connect a GOT to each PLC CPU to respond to the system switching.

 

 

 

 

 

 

 

 

 

 

CPU direct connection

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GOT1

 

 

 

 

 

 

 

 

Monitor

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Network No. 1, Station No. 0

 

 

 

 

target

 

 

 

 

(Multiplexed remote master station)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

supplyPower module

 

Q25PRHCPU

 

25-QJ71LP21

 

QJ71BR11

 

 

100-QJ71E71

 

QJ61BT11N

 

Empty

 

supplyPower module

Q25PRHCPU

Control system

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(System A)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CPU direct connection

GOT2

Network No. 1, Station No. 1 (Multiplexed remote sub master station)

25-QJ71LP21

QJ71BR11

100-QJ71E71

QJ61BT11N

Empty

Standby system

 

 

 

 

 

 

 

 

 

 

(System B)

 

 

 

 

 

 

MELSECNET/H remote I/O network

Network No. 1, Station No. 2 (remote I/O station)

 

 

 

 

 

 

 

supply Power module

 

25-QJ72LP25

QJ71C24N

Empty

Empty

 

 

 

 

 

 

 

(1)Connection method

Connect GOTs to the RS-232 interface of the control system and standby system CPU modules (Q12PRHCPU, Q25PRHCPU) of the redundant system.

For details, refer to the following.

6. DIRECT CONNECTION TO CPU

(2)GT Designer3 setting

Set GT Designer3 as follows.

Setting item

Settings

Model

 

 

MELSEC-QnA/Q/QS, MELDAS C6*

 

Controller Type

 

 

 

 

 

MELSEC-QnA/Q, MELDAS C6*

 

Device setting

Host

Host

 

(Network setting)

 

 

 

 

Q Redundant Setting

 

Do not set the item.

 

(3)Monitoring target change when system switching occurs in a redundant system

When the system switching occurs, the GOT cannot change the monitor target automatically in response to the system switching.

The GOT that is connected to the control system CPU module after system switching continues the monitoring. Different from the case using one GOT, no cable reconnection is required.

POINT

To automatically change the monitoring target after system switching using one GOT, make the Q redundant settings.

4.9 Q Redundant Setting

4 - 12

4. HOW TO MONITOR REDUNTANT SYSTEM

 

4.2 Direct CPU Connection