Tom wrote: >I am using the Mesa 5i20 & 7i33 DAC board combination to retrofit a Kasuga >mill. >I am controlling a VFD that takes the standard 0-10V speed reference plus start >and reverse. >I am currently working my way thru the problem of outputting a speed command >/voltage signal that does not switch to a negative integer/value when I hit M4. >I am trying to use the abs component to strip the negative value from the >floating point speed command integer coming out of motion.spindle-speed-out. > >Below are the corresponding statements from my m5i20_io.hal file: > ># Set up spindle speed control >loadrt abs count=1 >net spindle-rpm-cmd motion.spindle-speed-out >linkps abs.0.in <= spindle-rpm-cmd >newsig abs-spindle float >linkps abs.0.out => abs-spindle >linksp abs-spindle => m5i20.0.dac-03-value >net SpindleOn motion.spindle-on >linksp SpindleOn => m5i20.0.dac-03-enable >setp m5i20.0.dac-03-gain [SPINDLE]DAC_SCALE #from 5i20ini file# >setp m5i20.0.dac-03-offset 80 > > >Looking at the Halmeter pins/signals, the abs component shows up with 3 pins >but >integer values that appear on the abs.0.in pin never come out on the abs.0.out >pin. Zip, nada, no output. Is is as if the abs component needs a parameter or >argument that I am not aware of to make it function. Is there something I am >missing here? > > You need to add the abs function to your servo thread: addf abs.0 servo-thread (change the names as appropriate for your setup)
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