Mitsubishi Electric GOT2000 Series Connection Manual page 262

(5) RS-485 connection diagram 5)
RS23C/RS485
interface converter
B(+)
A(-)
SG
GND
*1
*2
*3
*4
(6) RS-485 connection diagram 6)
GOT side
SDA1(TXD1+)
6
SDB1(TXD1-)
8
SDA2(TXD2+)
5
SDB2(TXD2-)
7
SG
2
RDA1(RXD1+)
10
RDB1(RXD1-)
12
RSA(RTS+)
14
RSB(RTS-)
16
CSA(CTS+)
18
CSB(CTS-)
20
NC
1
NC
3
NC
4
RDA2(RXD2+)
9
RDB2(RXD2-)
11
NC
13
NC
15
NC
17
NC
19
*1
*2
*3
*4
8 - 18
8.3 Connection Diagram
* 3
Temperature controller
4
3
5
6
* 4
Pin No. of temperature controller differs depending on the model.Refer to the following table.
Signal name
SDB (+)
SDA (-)
RDB (+)
RDA (-)
SG
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.
* 3
Pin No. of temperature controller differs depending on the model.Refer to the following table.
Signal name
SDB (+)
SDA (-)
RDB (+)
RDA (-)
SG
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.
Terminating resistor(220Ω 1/4W)
* 1
SDB(+)
SDA(-)
RDB(+)
RDA(-)
SG
Model of temperature controller
GREEN Series
UT/UP/UM
Pin No.
23
24
25
26
27
Terminating resistor(220Ω 1/4W)
Temperature controller
* 1
SDB(+)
SDA(-)
RDB(+)
RDA(-)
SG
* 4
Model of temperature controller
GREEN Series
UT/UP/UM
Pin No.
23
24
25
26
27
* 2
Temperature controller
* 1
SDB(+)
SDA(-)
RDB(+)
RDA(-)
SG
* 4
GREEN Series
* 2
Temperature controller
* 4
GREEN Series
US
Pin No.
21
22
23
24
25
* 1
SDB(+)
SDA(-)
RDB(+)
RDA(-)
SG
US
Pin No.
21
22
23
24
25