Can I Use the SCC-CTR01 Module With Quadrature Encoders and Up/Down Event Counting?
Problem: I have an SCC-CTR01 isolated counter module. What are the limitations of using this module with M Series and E Series devices?
For event counting applications, the signal to be counted should be applied to the isolated source input of the module. For event counting applications where the use of external Up/Down control lines are needed, these caveats exist:
For quadrature encoder applications with M Series devices that support Z-indexing, the CTR Aux pins in the SC-2345 breakout area must be used. Isolated inputs for these signals are not available. This is necessary because both the source and gate inputs of the counter are needed to connect the two quadrature encoder phase signals.
NI SCC-DI01 1-channel Optically Isolated Digital Input Module
Report Date: 09/20/2005
Last Updated: 10/05/2005
Document ID: 3PJGJ2RM