I/O For Normal Operation - National Instruments PCI-8254R User Manual

Chapter 2 Hardware Overview
Table 2-2 summarizes the isolated inputs and outputs available on the
NI 8254R.
Primary Input or
Function Output
Trigger Input
Quadrature Input
Encoder
External Input
Shutdown
Control
Product Input
Selection
†
Port
General Input
Purpose
General Output
Purpose
* TRIG 0, ISO Input 8, ISO Input 9, and ISO Input 10 can also function as trigger change detectors.
†
ISO Input 5 can also function as a latch for the product selection port.

I/O for Normal Operation

The following sections describe I/O functions that are available on the
NI 8254R during normal operation.
NI PCI-8254R User Manual
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Table 2-2. NI 8254R Isolated Inputs and Outputs
Number Signal
Available Names
3 TRIG 0
ISO Input 5
ISO Input 8
1 ISO Input 6
ISO Input 7
1 ISO Input 11
1 ISO Input 0
ISO Input 1
ISO Input 2
ISO Input 3
ISO Input 4
2 ISO Input 9
ISO Input 10
4 ISO Output 0
ISO Output 1
ISO Output 2
ISO Output 3
2-4
44-Pin 37-Pin
D-SUB on Terminal
NI 8254R Block
Pin Number Number
*
11
†
35
*
40
37
38
44
15
30
31
32
34
*
41
*
43
12
13
27
28
—
15
27
25
26
31
9
10
11
13
14
29
30
198
35
36
37
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