Re: A question for Don

Don W

Hi Dan H,

Absolute encoders as Russell has described do not issue tics, instead they issue an address.  So SiTech either counts tics (from incremental encoders) OR it read the address (the angle from a zero point).  Sitech has to know what kind of encoder signal to "read", so the check box in the SiTech tells whether to count tics or read the BISS data.

If you use an absolute encoder at anything except 1.000000 to 1.000000, then the reading will be false.  For instance if you use 2:1 ratio, the encoder will report two identical angles per revolution.  I am sure that would confuse all your software.

Don W

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