hi,are there any possibjuestility of edges counting just by creating a programme?even if the frequency is high? In fact I've only a card of aq

[Changyu]

uisition, admet that the signals from channels A and B, only from these, I must find the velocity of a motor, the direction of rotation and the position. there are no counter for me to use,just with the tools in Labview, is it realisable? hoping your help!Please!!

[Roli]

uisition, admet that the signals from channels A and B, only from these, I must find the velocity of a motor, the direction of rotation and the position. there are no counter for me to use,just with the tools in Labview, is it realisable? hoping your help!What do you mean by "high frequency"? Which DAQ card do you have available?

I doubt you can find the position of the encoders without an additional z channel.

For more info you might start with a search on "encoder" on the Technical Resource page from NI. This e.g. is a good KB Quadrature Encoder / Position Measurement

Hope this helps for a start
Roli
PS: You might ask your questions as well in the LabVIEW General forum and/or DAQ forum.

[Kerouac]

uisition, admet that the signals from channels A and B, only from these, I must find the velocity of a motor, the direction of rotation and the position. there are no counter for me to use,just with the tools in Labview, is it realisable? hoping your help!Hello,

It seems that you need to measure speed, direction and position from an encoder with the counters of your DAQ board.
There are already a lot of examples for LabVIEW available. Launch the Example Finder (from Help menu in LabVIEW) and search examples in the "Hardware I/O" directory". You will find some standard examples.

I hope it will help.
Regards.