Clear the encoder counter by N channel of encode

[Gavy]

Dear Sir
Our application is require the encoder position counter set(GAP 209) to zero automatically at the next N channel,we are using TMCM-351-E
But we don't know how to use it,we add 4 to sap 210,after that we used GAP 209 ,the encoder value is fixed,
Can you give me help how to use it?

Best Regards,

[Olav Kahlbaum (TRINAMIC)]

Do you know if the null channel is active high or active low? To check if it works, first set the encoder counter (parameter 209) to a very high value. Then turn the encoder one round and see how the encoder counter behaves. If the encoder counter suddenly has a low value (near zero) the null channel works.

[Gavy]

Do you know if the null channel is active high or active low?
>>>>> Yes,It fine,I can detect it by Optical angle encoder.
first set the encoder counter (parameter 209) to a very high value.
>>>>> Yes,I did. but can not set to zero or small value.
I want to know how to set 210 ?

[Olav Kahlbaum (TRINAMIC)]

It depends on the encoder pre-scaler that you need. If for example you need a prescaler of 1 uses SAP 210, 0, 516 (516=512 (for prescaler 1) + 4 (for clear encoder at N signal)).