DIGITAL INPUT/OUTPUT CARD IOD-144 USER MANUAL
7-1
CONNECTOR PIN ASSIGNMENTS
Six 50-pin headers are provided on the IOD-144 card; one for each group of 24 I/O lines.
The mating connector is an AMP type 1-746285-0 or equivalent. Connector pin
assignments are listed below. Notice that every second line is grounded to minimize
crosstalk between signals.
Assignment Pin Assignment Pin
Port C Hi PC7*
Port C Hi PC6
Port C Hi PC5
Port C Hi PC4
Port C Lo PC3**
Port C Lo PC2
Port C Lo PC1
Port C Lo PC0
Port B PB7
Port B PB6
Port B PB5
Port B PB4
Port B PB3
Port B PB2
Port B PB1
Port B PB0
Port A PA7
Port A PA6
Port A PA5
Port A PA4
Port A PA3
Port A PA2
Port A PA1
Port A PA0
+5 VDC
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
41
43
45
47
49
Ground
"
"
"
Ground
"
"
"
Ground
"
"
"
"
"
"
"
Ground
"
"
"
"
"
"
"
Ground
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
46
48
50
NOTES * This line is an I/O port and also an Interrupt Enable.
** This line is an I/O port and also a User Interrupt.