National Instruments NI Vision CVS-1456 User Manual page 6

Contents
Chapter 3
Digital I/O Functionality
Overview ....................................................................................................................... 3-1
TTL and Isolated Inputs and Outputs............................................................................ 3-1
TTL Inputs and Outputs.................................................................................. 3-2
Isolated Inputs and Outputs............................................................................. 3-2
I/O for Normal Operation ............................................................................... 3-3
I/O for Fault Conditions.................................................................................. 3-9
Considerations When Connecting the Digital I/O......................................................... 3-12
Wiring an Isolated Input to a Sourcing Output Device................................... 3-12
Wiring an Isolated Output to an External Load .............................................. 3-13
Protecting Inductive Loads ............................................................................. 3-14
Transmission Line Effects .............................................................................. 3-15
Typical System Setup .................................................................................................... 3-16
Chapter 4
Deployment
Connecting Multiple NI CVS-1450 Devices................................................................. 4-1
Appendix A
Troubleshooting
Appendix B
Mounting Information
Appendix C
Technical Support and Professional Services
Glossary
Index
NI CVS-1450 Series User Manual
Trigger Inputs ................................................................................... 3-3
Timed Pulse Output .......................................................................... 3-4
Quadrature Encoder .......................................................................... 3-7
Product Selection Port ...................................................................... 3-7
General-Purpose I/O ......................................................................... 3-8
Shutdown .......................................................................................... 3-10
Watchdog Timer ............................................................................... 3-11
Overheat............................................................................................ 3-12
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