Greeting Peter;
I hope this finds you well.
I am installing a new A axis on my go704, and am trying to exercise it
before moving 99% of the actual driver code code in from another machine
with identical hdwe for its B axis.
I have loaded a siggen to use its triangular drive as input to the
joint.03.position-cmd, with the amplitude set to 2.5 and this for the
rest of the dummy code:
setp hm2_5i25.0.stepgen.03.enable true #turn it on
setp siggen.0.frequency 10
setp siggen.0.amplitude 2.5
setp hm2_5i25.0.stepgen.03.steplen 4000
setp hm2_5i25.0.stepgen.03.stepspace 10000
setp hm2_5i25.0.stepgen.03.dirhold 6000
setp hm2_5i25.0.stepgen.03.dirsetup 6000
net mtr-test
<= siggen.0.triangle =>
hm2_5i25.0.stepgen.03.position-cmd
So tb2-20 to 23 on the 7i76D is supposed to be stepgen.03.outputs.
man siggen says it should be symmetrical if no offset is set. But dir on
neither pin is anywhere near 50/50, closer to 5/95, and faster than the
above 10 a sec by quite a bit, and the step terminals are a solid 5 volt
or zero volts, no activity at all.
This on a 4 channel storage scope with a 350MHz bandwidth. Siglent's
best. That puppy doesn't miss a thing.
Did I miss a setp above?
Thanks Peter.
Cheers, Gene Heskett.
--
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author, 1940)
If we desire respect for the law, we must first make the law respectable.
- Louis D. Brandeis
Genes Web page <http://geneslinuxbox.net:6309/>
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