Chapter 2 Using Your 653X
653X User Manual 2-4 ni.com
Connecting Signals
Connect digital input signals to the I/O connector using the pinout
diagrams, Figures C-1, 653X I/O Connector 68-Pin Assignments,
and C-2, 68-to-50-Pin Adapter Pin Assignments.
Creating a Program
Using the following flowcharts as a guide, create a program to perform
unstrobed I/O. Figure 2-1 displays a flowchart for C programming using
NI-DAQ, while Figure 2-2 shows a LabVIEW programming flowchart.
The boxes represent function names for the appropriate software, and the
diamonds represent decision points.
Table 2-1. Port 4 Lines
Direction Line I/O Pins
Input 0STOPTRIG 1
1STOPTRIG 2
2REQ 1
3REQ 2
Output (standard) 0PCLK 1
1PCLK 2
2ACK 1
3ACK 2