Comtrol DB25 - 78-Pin Connectors; 78-Pin Connector for RS-232 Quadcable;Octacable Controllers

28 [Documentation number: 2000430 Rev B] Building Basic Cables
78-pin Connectors
78-pin Connectors
78-pin Connector for
RS-232 Quadcable/
Octacable
Controllers
The following table lists the pinouts for a 78-pin connector. The 78-pin connector is
available on the following RocketPort models:
• RocketPort PCI quadcable and octacable.
• RocketPort Universal PCI quadcable and octacable.
• RocketPort Plus Universal PCI quadcable and octacable.
Pin RS-232 Function Pin RS-232 Function
1 DTR Port 7 40 TxD Port 4
2 TxD Port 5 41 RTS Port 5
3 DTR Port 5 42 DSR Port 5
4 CTS Port 5 43 DCD Port 4
5 DSR Port 4 44 RI Port 4
a
a. RI only applies to the RocketPort uPCI, RocketPort Plus, and
Hostess 554 products.
6 DCD Port 7 45 CTS Port 7
7RI Port 7
a
46 RxD Port 6
8 RxD Port 5 47 RI Port 6
a
9 CTS Port 6 48 DCD Port 6
10 TxD Port 3 49 DTR Port 0
11 TxD Port 2 50 TxD Port 1
12 RTS Port 2 51 RTS Port 0
13 DTR Port 2 52 DTR Port 3
14 RTS Port 3 53 CTS Port 1
15 RI Port 1
a
54 DSR Port 0
16 CTS Port 0 55 RxD Port 0
17 RxD Port 1 56 RxD Port 3
18 DCD Port 3 57 CTS Port 3
19 RI Port 3
a
58 DSR Port 2
20 RI Port 2
a
59 CTS Port 2
21 RTS Port 4 60 RTS Port 7
22 DTR Port 4 61 DTR Port 6
23 DCD Port 5 62 RTS Port 6
24 RI Port 5
a
63 TxD Port 6
25 CTS Port 4 64 TxD Port 7
26 DSR Port 7 65 SigGnd
27 RxD Port 7 66 SigGnd
28 RxD Port 4 67
b
b. When grounded, Pin 67 indicates to the host adapter and soft-
ware that it is a 4 port adapter instead of an 8 port adapter.
Special
29 DSR Port 6 68 SigGnd Port 0
30 TxD Port 0 69 SigGnd Port 1
31 RTS Port 1 70 SigGnd Port 2
32 DTR Port 1 71 SigGnd Port 3
33 DCD Port 1 72 SigGnd Port 4
34 DSR Port 1 73 SigGnd Port 5
35 DCD Port 0 74 SigGnd Port 6
36 RI Port 0
a
75 SigGnd Port 7
37 RxD Port 2 76 SigGnd
38 DSR Port 3 77 SigGnd
39 DCD Port 2 78 SigGnd
Pin 1
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