> > Thanks Peter. I am sorry, I maint PMD, not PID in my statements above. > > I tried to calibrate running HAL, but the analogue output is being clipped > at 1 V. There is probably a setting such as MAX_OUTPUT that I have not set > yet. The OUTPUT_SCALE and OUTPUT_OFFSET settings in the .ini file is also > probably not correct. I don't know yet how to set these in HAL (not running > EMC2). When starting up the motor is running slowly, so an offset seems > required. Yes, if you set the PWMGENs scale parameter to 10, you also need to set the PIDs max output parameter to 10
As far as the motor "creeping" at startup goes, yes, you can zero the few mV of analog output voltage offset, but its more important to make sure the amplifiers are disabled at power on (or E-STOP) for safety. Unless you are testing, the amplifiers should always be disabled when the feedback loop is open. > > The scaling and OFFSET as explained in the Integrator manual (p 35) is still > unclear to me. In one paragraph it speaks of voltages and in another of > mm/s. I will try to figure it out in the next few evenings. My impression is > that a 100% duty cycle for pwmgen should give 10V out from the 7i33, but > clipping is being done in EMC2 (in units I still have to find out), so the > input scaling has to be right > > Rudy > > > __________ Information from ESET Smart Security, version of virus signature > database 4986 (20100330) __________ > > The message was checked by ESET Smart Security. > > http://www.eset.com > > > > ------------------------------------------------------------------------------ > Download Intel® Parallel Studio Eval > Try the new software tools for yourself. Speed compiling, find bugs > proactively, and fine-tune applications for parallel performance. > See why Intel Parallel Studio got high marks during beta. > http://p.sf.net/sfu/intel-sw-dev > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > Peter Wallace Mesa Electronics (\__/) (='.'=) This is Bunny. Copy and paste bunny into your (")_(") signature to help him gain world domination. ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
