Rs-485 Cable - Mitsubishi Electric GOT2000 Series Connection Manual

8.3.2

RS-485 cable

■1. Connection diagram
(1) RS-485 connection diagram 1)
RS232C/RS485
interface converter
SDA(-)
1
SDB(+)
2
RDA(-)
3
RDB(+)
4
SG
5
GND
6
*1
*2
*3
*4
8 - 14
8.3 Connection Diagram
* 3 Temperature controller
* 4
Pin No. of temperature controller differs depending on the model. Refer to the following table.
Signal name
RDA (-)
RDB (+)
SDB (+)
SDA (-)
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.
Terminating resistor(220Ω 1/4W)
* 1
RDA(-)
RDB(+)
SDA(-)
SDB(+)
SG
Model of temperature controller
GREEN Series
UT/UP/UM
Pin No.
26
25
23
24
27
* 2
Temperature
controller
* 1
RDA(-)
RDB(+)
SDA(-)
SDB(+)
SG
* 4
GREEN Series
US
Pin No.
24
23
21
22
25