24.2  Connection Cable
24.2.1  RS-232 cable
24 - 9
17
CONNECTION TO 
ALLEN-BRADLEY PLC
18
CONNECTION TO 
SIEMENS PLC
19
MICROCOMPUTER 
CONNECTION
20
CONNECTION TO OMRON 
TEMPERATURE 
CONTROLLER
21
CONNECTION TO 
YAMATAKE TEMPERATURE 
CONTROLLER
22
CONNECTION TO RKC 
TEMPERATURE 
CONTROLLER
23
CONNECTION TO 
FREQROL SERIES 
INVERTER
24
SERVO AMPLIFIER 
CONNECTION
24.2 Connection Cable
The RS-232 cable or RS-422 cable used for connecting the GOT to the servo amplifier should be prepared 
by the user.
The following provides connection diagrams for each cable, connector specifications and other information.
24.2.1 RS-232 cable
The following shows the connection diagrams and connector specifications of the RS-232 cable used for 
connecting the GOT to a servo amplifier.
1 Connection diagram
*1 GT15 : CD, GT11 : NC
Series  and model names 
connection cable
RS-232 cable
(Refer to section 24.21)
RS-422 cable
(Refer to section 24.22)
servo amplifier
MELSERVO-J2-Super Series RS-232 cable 1) RS-422 cable 1)
MELSERVO-J2M Series RS-232 cable 1) RS-422 cable 1)
MELSERVO-J3 Series
RS-422 cable 3)
RS-422 cable 4)
RS-422 cable 5)
RS-422 cable 6)
Distributor BMJ-8 RS-422 cable 4)
GOT side
Cable connection and signal direction
Connector for interface unit's or 
servo amplifier's CN3
Signal name Pin No. Pin No. Signal name
CD/NC
*1
1 Plate FG
SD(TXD) 3 2RXD
9 11 LG
RD(RXD) 2 12 TXD
SG 5 11 LG
RS(RTS) 7
CS(CTS) 8
DR(DSR) 6
ER(DTR) 4