E-1
Appendix EConnecting RS-530 toRS-422

Table E-1 Connecting RS-530 to RS-422

Signal Function RS-449 (RS-422/423) RS-530
37-pin
Pin Circuit
DB-25 Female
Standalone & Card
Cage Pin Circuit
Protective Ground 1 Shield 1
Signal Ground 19 SG 7 AB
DTE Common Return 37 SC
DCE Common Return 20 RC
Transmitted Data 4
22
SD (A)
SD (B)
2
14
BA (A)
BA (B)
Received Data 6
24
RD (A)
RD(B)
3
16
BB (A)
BB (B)
Request to Send 7
25
RS (A)
RS (B)
4
19
CA (A)
CA (B)
Clear to Send 9
27
CS (A)
CS (B)
5
13
CB (A)
CB (B)
Data Set Ready 11
29
DM (A)
DM (B)
6
22
CC (A)
CC (B)
Carrier Detect 13
31
RR (A)
RR (B)
8
10
CF (A)
CF (B)
External Transmit
Clock
17
35
TT (A)
TT (B)
24
11
DA (A)
DA (B)
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