Hi Friend

I m doing wrting a code in vb6 to count encoder pulses.

As to communicate with  ports I include WIN95IO.dll in my program through with i can communicate with port by using VBINP and VBOUT function.

Now my problem is that i m confused that, how to write a code to count encode pulses at run time.

Pls help me for that.

There is an excellent article at

http://www.aaroncake.net/electronics/vblpt.htm

 Presumably, you would constantly check

 BitStatus%(port_number, number_of_bit_corresponding_to_encoder)

I would caution, however, that Windows is not a real-time operating system.  You really need to ensure nothing else is running, and avoid doing anything to update the screen, if pulses are less than 50 milliseconds apart.

This is a job better suited to a PLC or real-time operating system.