GPI Ports

There are GPI ports located on two types of boards in the frame. The GPI I/O port is located on the Frame CPU board in slot A, and the GPIO ports are located on the Reference with Tally board in slot G in the 4RU frame and slot L and M in the 8RU fame.

The GPI ports use a female DB25 connector.

Table 1. GPI I/O Port Pinouts (Frame CPU)

Pin	Signal
1	Ground
2	n/c
3	n/c
4	GPI In 10
5	GPI In 9
6	GPI In 8
7	GPI In 7
8	GPI In 6
9	GPI In 5
10	GPI In 4
11	GPI In 3
12	GPI In 2
13	GPI In 1
14	n/c
15	n/c
16	GPI Out 10
17	GPI Out 9
18	GPI Out 8
19	GPI Out 7
20	GPI Out 6
21	GPI Out 5
22	GPI Out 4
23	GPI Out 3
24	GPI Out 2
25	GPI Out 1

Table 2. GPIO Port Pinouts (Reference with Tally)

Pin	Signal
1	Ground
2	GPI I/O 1
3	GPI I/O 2
4	GPI I/O 3
5	GPI I/O 4
6	GPI I/O 5
7	GPI I/O 6
8	GPI I/O 7
9	GPI I/O 8
10	GPI I/O 9
11	GPI I/O 10
12	GPI I/O 11
13	GPI I/O 12
14	GPI I/O 13
15	GPI I/O 14
16	GPI I/O 15
17	GPI I/O 16
18	GPI I/O 17
19	GPI I/O 18
20	GPI I/O 19
21	GPI I/O 20
22	GPI I/O 21
23	GPI I/O 22
24	GPI I/O 23
25	GPI I/O 24