Manual 104-QUAD-8
19
Chapter 6: Connector Pin Assignments
Function
CH# Pin
Pin CH# Function
Ground
1
1
2
1 Fused +5V
Index Negative Input
1
3
4
1 Index Positive Input
Quadrature A Negative Input
1
5
6
1 Quadrature A Positive Input
Quadrature B Negative Input
1
7
8
1 Quadrature B Positive Input
Ground
2
9
10
2 Fused +5V
Index Negative Input
2
11
12
2 Index Positive Input
Quadrature A Negative Input
2
13
14
2 Quadrature A Positive Input
Quadrature B Negative Input
2
15
16
2 Quadrature B Positive Input
Ground
3
17
18
3 Fused +5V
Index Negative Input
3
19
20
3 Index Positive Input
Quadrature A Negative Input
3
21
22
3 Quadrature A Positive Input
Quadrature B Negative Input
3
23
24
3 Quadrature B Positive Input
Ground
4
25
26
4 Fused +5V
Index Negative Input
4
27
28
4 Index Positive Input
Quadrature A Negative Input
4
29
30
4 Quadrature A Positive Input
Quadrature B Negative Input
4
31
32
4 Quadrature B Positive Input
No connection
33
34
No connection
Table 6-1:
Connector Pin Assignments - P2
Notes
:
1.
When using single-ended Encoders leave the Negative Input open (internal 1.4V threshold
level) and connect the Encoder (A, B, Index) output lead to the corresponding Positive Input pin.
2.
Both single-ended and differential Encoders require a ground connection between the Encoder
and the PC/104 board to eliminate the adverse effects of exceeding the common mode range
when an external power supply is used.
3.
When the Fused +5V source is used to power your encoders, (i.e. on pins 2, 10, 18, & 26)
Ground (i.e. on pins 1, 9, 17, & 25) is a required return path.
