APPENDIX B: Connector Pinouts

B.2 RS-422/485

Table A-2. Pinout of Connector Set to RS-422/485

Abbreviation

Name

Pin #

Mode

 

 

 

 

GND

Ground

5

 

 

 

 

 

TX +

Transmit Data Positive

4

Output

 

 

 

 

TX-

Transmit Data Negative

3

Output

 

 

 

 

RTS+

Request To Send Positive

6

Output

 

 

 

 

RTS-

Request To Send Negative

7

Output

 

 

 

 

RX+

Receive Data Positive

1

Input

 

 

 

 

RX-

Receive Data Negative

2

Input

 

 

 

 

CTS+

Clear To Send Positive

9

Input

 

 

 

 

CTS-

Clear To Send Negative

8

Input

 

 

 

 

27

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Image 28
Black Box IC133C-R2, IC187C manual RS-422/485