User's Manual
5. BUS CONNECTION
5.2 System Configuration
5 - 9
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
5.2.2 Connecting to QnACPU or AnCPU
 When one GOT is connected
*1 For the extension cables, refer to MELSEC-A/QnA catalog (L(NA)08024).
*2 When installing the GOT 6.6m or more away from the main base unit, the bus connector conversion box is required.
*3 When using GT15-C EXSS-1, follow the precautions below.
5.4.1 GT15-C [ ] EXSS-1, GT15-C [ ] BS
*4 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.
Extension base
unit
Bus extension 
connector box
GOT
Main base unit
Extension cable
Connection cable 1)
Connection cable 2)
Communication driver
Bus(A/QnA)
PLC
Connection cable 2)
GOT
Max. distance
Main
base
Extension
cable
*1
Extens
ion
base
Connection cable 1)
Bus 
connector
conversion
box
*2
Option device
Model
Main
base
-- - -
GT15-C12NB(1.2m)
GT15-C30NB(3m)
GT15-C50NB(5m)
GT15-75ABUSL
GT15-75ABUS2L
GT15-ABUS
GT15-ABUS2
Between main base and 
GOT: 6.6m
- (Built into GOT)
--
GT15-AC06B(0.6m)
GT15-AC12B(1.2m)
GT15-AC30B(3m)
GT15-AC50B(5m)
A7GT
-CNB
GT15-C100EXSS-1(10m)
GT15-C200EXSS-1(20m)
GT15-C300EXSS-1(30m)
*3
GT15-75ABUSL
GT15-75ABUS2L
GT15-ABUS
GT15-ABUS2
Between main base and 
GOT: 36.6m
(Including between main 
base and bus connector 
conversion box)
Between main base and 
bus connector conversion 
box: 6.6m
- (Built into GOT)
Main
base
Extension
cable
Extens
ion
base
--
GT15-C12NB(1.2m)
GT15-C30NB(3m)
GT15-C50NB(5m)
GT15-75ABUSL
GT15-75ABUS2L
GT15-ABUS
GT15-ABUS2
Between main base and 
GOT: 6.6m
(Including the extension 
cable length)
- (Built into GOT)
GT15-AC06B(0.6m)
GT15-AC12B(1.2m)
GT15-AC30B(3m)
GT15-AC50B(5m)
A7GT
-CNB
GT15-C100EXSS-1(10m)
GT15-C200EXSS-1(20m)
GT15-C300EXSS-1(30m)
GT15-75ABUSL
GT15-75ABUS2L
GT15-ABUS
GT15-ABUS2
Between main base and 
GOT: 36.6m
Between main base and 
bus connector conversion 
box: 6.6m
(Including the extension 
cable length)
- (Built into GOT)










