Connect Tech Blue Heat/PCI PCI Serial Communications - Manual (Page 27)

Blue Heat/PCI User’s Manual, Connect Tech Inc.
27 Revision 0.11
Table 8 (cont.): DB-78 pinouts – Blue Heat/PCI; RS-422/485; 20mA CL; Universal Blue Heat/PCI
RS-422/485
Pin
No. Port
No. RS-232
Signal Signal
Direction RS-422/485
Signal Signal
Direction
20mA Signal
Direction
40 1 RTS output RTS A(-) output TxD (-) output
41 1 CTS input RTS B(+) output RxD (+) input
42 1 DSR input CTS A(-) input RxD Ret. input
43 1 RI input CTS B(+) input RxD Src. input
44 1 SG signal gnd. SR signal ref. SG signal ref
45 2 RTS output RTS A(-) output TxD (-) output
46 2 CTS input RTS B(+) output RxD (+) input
47 2 DSR input CTS A(-) input RxD Ret. input
48 2 RI input CTS B(+) input RxD Src. input
49 3 RTS output RTS A(-) output TxD (-) output
50 3 CTS input RTS B(+) output RxD (+) input
51 3 DSR input CTS A(-) input RxD Ret. input
52 3 RI input CTS B(+) input RxD Src. input
53 3 SG signal gnd. SR signal ref. SG signal ref
54 4 RTS output RTS A(-) output TxD (-) output
55 4 CTS input RTS B(+) output RxD (+) input
56 4 DSR input CTS A(-) input RxD Ret. input
57 4 RI input CTS B(+) input RxD Src. input
58 NC no connect NC no connect NC no connect
59 NC no connect NC no connect NC no connect
60 1 TxD output TxD A(-) output TxD Src. output
61 1 RxD input TxD B(+) output TxD (+) output
62 1 DTR output RxD A(-) input TxD Ret. output
63 1 DCD input RxD B(+) input RxD (-) input
64 2 SG signal gnd. SR signal ref. SG signal ref
65 2 TxD output TxD A(-) output TxD Src. output
66 2 RxD input TxD B(+) output TxD (+) output
67 2 DTR output RxD A(-) input TxD Ret. output
68 2 DCD input RxD B(+) input RxD (-) input
69 3 TxD output TxD A(-) output TxD Src. output
70 3 RxD input TxD B(+) output TxD (+) output
71 3 DTR output RxD A(-) input TxD Ret. output
72 3 DCD input RxD B(+) input RxD (-) input
73 4 SG signal gnd. SR signal ref. SG signal ref.
74 4 TxD output TxD A(-) output TxD Src. output
75 4 RxD input TxD B(+) output TxD (+) output
76 4 DTR output RxD A(-) input TxD Ret. output
77 4 DCD input RxD B(+) input RxD (-) input
78 NC no connect NC no connect NC no connect
Cable Part #(s): CAB08FXDX
IOB08DB9
IOB08DB9V1