How to program encoder pulses in Signal Express to read out in degrees

[jonrie1]

I have people requesting a Signal Express application that can display rotary machine degrees (0.0-359.9), with input from an encoder to a 6602 counter card. Can this be done in Signal Express at all and if so, what is the easiest way to program it?

[DavidMN]

Hi Jonrie1,

Yes this can be done in Signal Express.  The easiest way is to create a DAQmx Acquire step for counter input » position » angular.

[headni]

Hello David,

in the same way, i configured a linear position encoder.

In the continious sampling mode, I can't save the displacement channel.

Is there any other option to save the Channel witrh e.g. 20 kHz?

Regards,

Andreas

[diabeticdaniel]

What hardware are you using to perform your task? I was able to reproduce the message you saw when I tried to create a counter task with anything other than one of our cDAQ chassis. When trying to create this task with a module in a cDAQ chassis, logging was available. It may be a restriction on your hardware that is preventing you from logging the displacement.

[headni]

Hello diabeticdaniel,

I use a cDAQ Chassis NI 9178 with the Modul 9401.

In between I found this, is this also your opinion:

http://forums.ni.com/t5/SignalExpress/Recording-synchronized-analog-and-encoder-inputs/m-p/2857926#M...

But I have still the problem in SignalExpress to choose a external Timing. E.g. the "20 MHz Timebase" or the "Onboard Clock" is not availible.

I need at least a 10 Mhz Clock to recognize the Signal.