Mitsubishi Electric GOT2000 Series Connection Manual page 266

(11) RS-485 connection diagram 11)
GOT side
SDA1(TXD1+)
6
SDB1(TXD1-)
8
RDA1(RXD1+)
10
RDB1(RXD1-)
12
SG
2
RSA(RTS+)
14
RSB(RTS-)
16
CSA(CTS+)
18
CSB(CTS-)
20
NC
1
NC
3
NC
4
SDA2(TXD2+)
5
SDB2(TXD2-)
7
RDA2(RXD2+)
9
RDB2(RXD2-)
11
NC
13
NC
15
NC
17
NC
19
*1
*2
*3
(12) RS-485 connection diagram 12)
RS232C/RS485
interface converter
RDA(-) 3
RDB(+) 4
SDB(+) 2
SDA(-) 1
SG
5
GND
6
*1
*2
*3
8 - 22
8.3 Connection Diagram
* 2
Terminating resistor should be provided for a temperature controller which will be a terminal.
Set the terminating resistor of GOT side which will be a terminal.
➠ ■3.
Connecting terminating resistors
Connect FG grounding to the appropriate part of a cable shield line.
* 2
Temperature controller
* 3
Terminating resistor should be provided for a temperature controller which will be a terminal.
Turn on the terminating switch on the RS232C/RS485 converter at the end.
Connect FG grounding to the appropriate part of a cable shield line.
Terminating resistor(100Ω 1/2W)
Temperature controller
RX+
3
RX-
5
TX+
4
TX-
6
SG
2
* 3
TX-
6
TX+
4
RX+
3
RX-
5
SG
2
* 3
Terminating resistor(220Ω 1/4W)
* 1
Temperature controller
3
5
4
6
2
* 3
Temperature controller
TX-
6
TX+
4
RX+
3
RX-
5
SG
2
* 1
RX+
RX-
TX+
TX-
SG