Start stop encoder read

Any one explane me howto start and stop read encoder from arduino ? I read encoder position but i need start and stop from button or proximity Who help me please Tankyou PS. when start begin from 0 position

What encoder?
Paul

Digitale encoder + A B GND 200 step for round

The age-old question...what have you tried?

Paul

I no Tried i no have idea i But possibile set pin ch A and B off from button I no have idea Any example ??

You don't have to start or stop it, just ignore it when its not relevant, surely?

[color=#202124]no....
since it always runs I have to read when I want and stop when I want
but how ??
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Why have you not posted your code yet, using code tags?