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Subject: Value of Renishaw absolute encoder exceeds its maximum
From: Chiang, Liang-Chih [江良志] via Tech-talk <tech-talk at aps.anl.gov>
To: "tech-talk at aps.anl.gov" <tech-talk at aps.anl.gov>
Date: Fri, 24 Mar 2023 03:32:30 +0000
Hello,

I use Galil DMC-4080 controller to read Renishaw absolute encoders(26 bits).
So far so good.

However, I conjectured that I encounter the situation where encoder's value
exceeds its maximum(2^26 = 67,108,864).

66,000,166 is the encoder value initially.
59,829,149 when going to negative limit switch, which is ok.
899,833 when going to positive limit switch, which is abnormal.

What could I do to handle this situation?
1.  Replace the encoder scale.
2.  Can I remedy it in EPICS? How? I have no idea.


Best regards.



LiangChih Chiang

NSRRC

Beamline Group

email:chiang.lc at nsrrc.org.tw 


Replies:
Re: Value of Renishaw absolute encoder exceeds its maximum Torsten Bögershausen via Tech-talk

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