Connect Tech Blue Heat/PCI PCI Serial Communications Blue Heat/PCI Users Manual, Connect Tech Inc. , 25 Revision 0.11 , Table 7: DB-37 pinouts for Blue Heat/PCI RS-232 and RS-422/485 models ,

Blue Heat/PCI User’s Manual, Connect Tech Inc.
25 Revision 0.11
Table 7: DB-37 pinouts for Blue Heat/PCI RS-232 and RS-422/485 models
Pin
No.
Port
No.
RS-232
Signal Direction
RS-422/485
Signal Direction
1 1 SG signal gnd SR signal ref
2 1 DTR output RxD A(-) input
3 1 TxD output TxD A(-) output
4 1 RxD input TxD B(+) output
5 1 DCD input RxD B(+) input
6 unused unused
7 3 RI input CTS B(+) input
8 3 CTS input RTS B(+) output
9 3 RTS output RTS A(-) output
10 3 DSR input CTS A(-) input
11 4 RI input CTS B(+) input
12 4 CTS input RTS B(+) output
13 4 RTS output RTS A(-) output
14 4 DSR input CTS A(-) input
15 2 SG sign al gnd SR signal ref
16 2 DTR output RxD A(-) input
17 2 TxD output TxD A(-) output
18 2 RxD input TxD B(+) output
19 2 DCD input RxD B(+) input
20 1 RI input CTS B(+) input
21 1 CTS input RTS B(+) output
22 1 RTS output RTS A(-) output
23 1 DSR input CTS A(-) input
24 3 SG sign al gnd SR signal ref
25 3 DTR output RxD A(-) input
26 3 TxD output TxD A(-) output
27 3 RxD input TxD B(+) output
28 3 DCD input RxD B(+) input
29 4 SG sign al gnd SR signal ref
30 4 DTR output RxD A(-) input
31 4 TxD output TxD A(-) output
32 4 RxD input TxD B(+) output
33 4 DCD input RxD B(+) input
34 2 RI input CTS B(+) input
35 2 CTS input RTS B(+) output
36 2 RTS output RTS A(-) output
37 2 DSR input CTS A(-) input
Part #: CAB04DX