22 - 14
22.2  Connection Cable
22.2.3  RS-485 cable
22.2.3 RS-485 cable
The following shows the connection diagrams and connector specifications of the RS-485 cable used for 
connecting the GOT to a temperature controller.
1 Connection diagram
(1) RS-485 cable 1)
*1 Set the terminating resistor of GOT side to “Disable”.(   Connecting terminating resistors)
*2 For details of the pin assignment, refer to the following manual.
 User's Manual for the RKC temperature controller
GOT side
*1
(Terminal block)
Cable connection and signal direction
RKC product side
(Modular connector)
Signal name Pin No. Pin No.
Signal 
name
Pin assignment
*2
SDA1 1 2 T/R(B)
SDB1 2 1 T/R(A)
RDA1 3 3 SG
RDB1 4 4 NC
SDA2 5 5 NC
SDB2 6 6 SG
RDA2 7
RDB2 8
SG 9
FG 10
SG
Unused
SG
T/R(B)
T/R(A)
6
5
4
3
2
1
Unused