How to extract encoder phases (A, B, Z channels) from counter?

[r15]

Hello,

I have a simple question that I am having trouble answering. My question is, is it possible to extract the raw data (meaning phase A, B, Z) from the VI attached? I understand that the angular position of the encoder, which is calculated using channels A and B, is the data that is being displayed, but is it possible to also display the values of phase A, B and Z in volts maybe? Or in any other way?

Thank you,

r15

[.aCe.]

Hello,

You are essentially reading digital signals, so there wont be any point in displaying the voltage I dont think.

Have you tried these links?

http://zone.ni.com/devzone/cda/tut/p/id/7109

http://www.ni.com/gettingstarted/setuphardware/dataacquisition/quadratureencoders.htm

[r15]

Hello,

I have read many articles on ni.com and I understand I am reading digital signals and there is no point, but I would like to be able to extract the values of phases A, B and Z for calibration purposes. My question is is it possible to retrieve these values along side the angular position of the encoder.

I just need the values of the 3 phases at any instant during the running of the program.

Thank you,

r15

[.aCe.]

Hi,

You could read them as three different counter lines and calclulate the angular position using the formula in the link posted before.

[Zody]

Hello,

What hardware are you using?

How many counters do you have?

Ion R.

[r15]

I am using three similar quadrature encoders with the following part number: E50S8 - 1000 - 3 - T - 5

To decode these encoders, I am using the NI USB-6341 which has 4 counters.

I attached the datasheet for the encoder.

r15

[Zody]

At this moment I would agree with aCe and use counter line to read signal A,B and Z.