User's Manual
5. BUS CONNECTION
5.2 System Configuration
5 - 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
*1 For details on the extension cables, refer to the MELSEC-A/QnA catalog (L(NA)8024). 
*2 Use the A168B for the extension base unit.
*3 When installing the GOT 30m or more away from the main base unit, the bus connector conversion box is required.
*4 When using GT15-C EXSS-1, connect as the following precautions.
5.4.1 GT15-C [ ] EXSS-1, GT15-C [ ] BS
*5 When using the following functions, use GT15-ABUS(2). GT15-75ABUS(2)L cannot be used.
Used for remote personal computer operation (serial), video display function, multimedia function, operation panel function, 
external I/O function, RGB display function, report function (when using a PictBridge compatible printer), hard copy function 
(when using a PictBridge compatible printer), sound output function, functions with the CF card unit or CF card extension unit, 
Ethernet download, gateway function or MES interface function
However, Ethernet download, gateway function and MES interface function can be used for GT16 by using the Ethernet interface.
Main
base
Extension
cable
Extens
ion
base
--
GT15-A1SC07B(0.7m)
GT15-A1SC12B(1.2m)
GT15-A1SC30B(3m)
GT15-75ABUSL
GT15-75ABUS2L
GT15-ABUS
GT15-ABUS2
Between extension 
base and GOT: 3m
(Including the 
extension cable length)
- (Built into GOT)
--
GT15-C100EXSS-1(10m)
GT15-C200EXSS-1(20m)
GT15-C300EXSS-1(30m)
*4
GT15-75ABUSL
GT15-75ABUS2L
GT15-ABUS
GT15-ABUS2
Between extension 
base and GOT: 33m
(Including the 
extension cable length)
- (Built into GOT)
GT15-A1SC05NB(0.45m)
GT15-A1SC07NB(0.7m)
GT15-A1SC30NB(3m)
A7GT
-CNB
*3
GT15-C100EXSS-1(10m)
GT15-C200EXSS-1(20m)
GT15-C300EXSS-1(30m)
*4
GT15-75ABUSL
GT15-75ABUS2L
GT15-ABUS
GT15-ABUS2
Between extension 
base and GOT: 33m
Between extension 
base and bus 
connector conversion 
box: 3m
(Including the 
extension cable length)
- (Built into GOT)
PLC
Connection cable 2)
GOT1000 Series
Max. distance
Main
base
Extension
cable
*1
Extens
ion
base
*2
Connection cable 1)
Bus
connector
conversion
box
Option device
*5
Model










