Mitsubishi Electric GOT2000 Series Connection Manual page 354

(13) RS-485 connection diagram 13)
*1
*2
■2. Precautions when preparing a cable
(1) Cable length
The length of the RS-485 cable must be 1200m or less.
(2) GOT side connector
For the GOT side connector, refer to the following.
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(3) RKC temperature controller side connector
Use the connector compatible with the RKC temperature controller side module.
For details, refer to user's manual of the RKC temperature controller.
■3. Connecting terminating resistors
(1) GOT side
Set the terminating resistor by operating the terminating resistor setting switch.
For the procedure to set the terminating resistor, refer to the following.
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9 - 48
9.3 Connection Diagram
* 1
GOT side
SDA
SDB
RDA
RDB
SG
Set the 2-wire type ←→ 4-wire type/terminating resistor setting switch of the RS-232/485 signal conversion adapter as follows.
2-wire type ←→ 4-wire type: 2-wire type (1 pair)
Terminating resistor: 110Ω
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1.4.4 Setting the RS-232/485 signal conversion adaptor
For details of the pin assignment, refer to the following manual.
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User's Manual of the RKC temperature controller
1.4.1 GOT connector specifications
1.4.3 Terminating resistors of GOT
RKC temperature controller side
* 2
(Modular connector)
T/R(B)
T/R(A)
SG
NC
NC
SG