45
APPENDIX B: Connecting RS-530 to RS-422
Appendix B. Connecting RS-530 to
RS-422
Table B-1. Interface List for Connecting FOM-20 (RS-530) to V.36 DTE
(RS-422)
Signal Function
RS-449 (RS-422/423) EIA 530
37-Pin
DB25 Female Standalone and Frame
Pin
Circuit
Pin
Circuit
Protective Ground
1
Shield
1
Signal Ground
19,37,
7
AB
20
Transmitted Data
22
SD(B)
2
BA(A)
4
SD(A)
14
BA(B)
Received Data
6
RD(A)
3
BB(A)
24
RD(B)
16
BB(B)
Request to Send
7
RS(A)
4
CA(A)
25
RS(B)
19
CA(B)
Clear to Send
9
CS(A)
5
CB(A)
27
CS(B)
13
CB(B)
Data Set Ready
11
DM(A)
6
CC(A)
29
DM(B)
22
CC(B)
Data Terminal
12
TR(A)
20
CD(A)
Ready
30
TR(B)
23
CD(B)
Carrier Detect
13
RR(A)
8
CF(A)
31
RR(B)
10
CF(B)
