Mitsubishi Electric GOT2000 Series Connection Manual page 216

(12) RS-485 connection diagram 12)
RS232C/RS485
* 2
interface converter
RDA(-) 3
RDB(+)
4
SDB(+)
2
SDA(-)
1
SG
5
GND
6
*1 Terminating resistor should be provided for a temperature controller which will be a terminal.
*2 Turn on the terminating switch on the RS232C/RS485 converter at the end.
*3 Connect FG grounding to the appropriate part of a cable shield line.
(13) RS-485 connection diagram 13)
* 2
GOT side
SDA
1
SDB
6
RDA
2
RDB
7
SG
5
RSA
3
CSA
4
RSB
8
CSB
9
FG
-
*1 Terminating resistor having 100 Ω 1/2W should be provided for a temperature controller which will be a terminal.
*2 Set the terminating resistor of GOT side which will be a terminal.
*3 Connect FG grounding to the appropriate part of a cable shield line.
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8. CONNECTION TO YOKOGAWA TEMPERATURE CONTROLLER
8.3 Connection Diagram
Temperature controller
TX-
6
TX+
4
RX+
3
RX-
5
2
* 3
Terminating resistor(220Ω 1/4W)
Temperature controller
RX+
RX-
TX+
TX-
SG
* 3
■ Connecting terminating resistors
SG
* 3
* 1
3
5
4
6
2
* 3
* 1
Terminating resistor
Temperature controller
TX-
6
TX+
4
RX+
3
RX-
5
SG
2
Temperature controller
RX+
3
RX-
5
TX+
4
TX-
6
SG
2