Is this a scale with a single index pulse in the middle of travel, or does it have an index which is high at one side of the centre and low at the other?
Rawcounts=0 in the middle of the scale. According to the manual:
"Encoder Zero Position: 1 every 50mm"
HOME_SEARCH_VEL=0 didn't change anything.
Any other suggestions?
Thanks
Could it be related to the encorder begin 08?
I have a 7189 (not plugged in yet) which provides 0-7 and 8 is the encoder off the 7i76e.
hm2_7i76e.0.encoder.08 is working great for positional feedback - its only homing I am having difficulty with.
relevant line from my hal file:
net y-index-enable joint.1.index-enable <=> hm2_7i76e.0.encoder.08.index-enable
rawcounts will start from zero at whatever position the scale was in when LinuxCNC started, if the scales are quadrature. If they are absolute then the answers are different.
Some encoders have regular index pulses with variable gaps between them, so you know where you after seeing two of them.
Do you have a link to the documentation for the scales?
It must be absolute then. I have tapped the position on the scale where Rawcounts = 0 and it returns to it irrespective of the position it was in when LinuxCNC started. It is in the middle of the scale. Negative rawcounts one end, positive the other.
