22.2  Connection Cable
22.2.3  RS-485 cable
22 - 15
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
2 Connector specifications
(1) GOT side connector
Use the following as the RS-422/485 communication unit connector on the GOT.
For the GOT side of the RS-485 cable, use the terminal block packed together with the RS-422/485 
communication unit.
(2) RKC temperature controller side connector
Use the connector compatible with the RKC temperature controller side module.
For details, refer to the following manual.
 User's Manual for the RKC temperature controller
3 Precautions when preparing a cable
The length of the RS-485 cable must be 1200m or less.
4 Connecting terminating resistors
(1) GOT
Set the terminating resistor of RS-422/485 communication unit using the terminating resistor 
setting switch.
*1 The default setting is “Enable”.
GOT Connector model Connector type Manufacturer
GT15-RS4-TE SL-SMT3.5/10/90F BOX Weidmuller interconnections inc.
Terminating 
resistor
*1
Switch No.
1 2
Enable ON ON
Disable OFF OFF
SW1
ON
12
ON
SW1
ON
12
Terminating resistor setting switch
Rear view of RS-422/485 communication unit