[Emc-users] 3-phase pwmgens for 7i39
Hello, gentlemen! I am trying to load 3-phase pwmgens on 7i43 for 7i39, but I receive error. With this one EMC loads correctly: CONFIG=firmware=hm2/7i43-4/SVST4_4_7I39.BIT num_encoders=3 num_pwmgens=3 num_stepgens=2 Note that this line requests single-phase pwm generators. So according to this manual: http://www.linuxcnc.org/docs/devel/html/man/man9/hostmot2.9.html#config%20modparam The line should look like this: CONFIG=firmware=hm2/7i43-4/SVST4_4_7I39.BIT num_encoders=3 num_3pwmgens=3 num_stepgens=2 But with this I receive error, in which I find this line to be most important: [ 4776.024432] hm2/hm2_7i43.0: invalid token in config string: num_3pwmgens=3 So how exactly should that config modparameter look like for 7i43 to load 3 instances of 3-phase pwm generator? Viesturs P.S. Pin and Bit files for the customized firmware are available here: http://www.cutting.lv/fileadmin/user_upload/SVST4_4_7I39.BIT http://www.cutting.lv/fileadmin/user_upload/SVST4_4_7I39.PIN -- All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity and more. Splunk takes this data and makes sense of it. Business sense. IT sense. Common sense. http://p.sf.net/sfu/splunk-d2dcopy1 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] 3-phase pwmgens for 7i39
On Wed, 28 Sep 2011, Viesturs L?cis wrote: Date: Wed, 28 Sep 2011 22:01:41 +0300 From: [UTF-8] Viesturs L?cis viesturs.la...@gmail.com Reply-To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net Subject: [Emc-users] 3-phase pwmgens for 7i39 Hello, gentlemen! I am trying to load 3-phase pwmgens on 7i43 for 7i39, but I receive error. With this one EMC loads correctly: CONFIG=firmware=hm2/7i43-4/SVST4_4_7I39.BIT num_encoders=3 num_pwmgens=3 num_stepgens=2 Note that this line requests single-phase pwm generators. So according to this manual: http://www.linuxcnc.org/docs/devel/html/man/man9/hostmot2.9.html#config%20modparam The line should look like this: CONFIG=firmware=hm2/7i43-4/SVST4_4_7I39.BIT num_encoders=3 num_3pwmgens=3 num_stepgens=2 But with this I receive error, in which I find this line to be most important: [ 4776.024432] hm2/hm2_7i43.0: invalid token in config string: num_3pwmgens=3 So how exactly should that config modparameter look like for 7i43 to load 3 instances of 3-phase pwm generator? Viesturs What version EMC, not sure if 2.46 has the 3 phase pwm support in the driver P.S. Pin and Bit files for the customized firmware are available here: http://www.cutting.lv/fileadmin/user_upload/SVST4_4_7I39.BIT http://www.cutting.lv/fileadmin/user_upload/SVST4_4_7I39.PIN -- All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity and more. Splunk takes this data and makes sense of it. Business sense. IT sense. Common sense. http://p.sf.net/sfu/splunk-d2dcopy1 ___ 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. -- All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity and more. Splunk takes this data and makes sense of it. Business sense. IT sense. Common sense. http://p.sf.net/sfu/splunk-d2dcopy1 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] 3-phase pwmgens for 7i39
On Sep 28, 2011, at 13:19 , Peter C. Wallace wrote: On Wed, 28 Sep 2011, Viesturs L?cis wrote: But with this I receive error, in which I find this line to be most important: [ 4776.024432] hm2/hm2_7i43.0: invalid token in config string: num_3pwmgens=3 So how exactly should that config modparameter look like for 7i43 to What version EMC, not sure if 2.46 has the 3 phase pwm support in the driver 3-phase pwm is not in 2.4 . It is in 2.5 and master. -- Sebastian Kuzminsky -- All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity and more. Splunk takes this data and makes sense of it. Business sense. IT sense. Common sense. http://p.sf.net/sfu/splunk-d2dcopy1 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] Determine if a spindle speed change is from override?
I'm writing a user-space program to manage spindle speed on a machine with a VFD for the motor, and drive ratios set by belt and gear changes. From available HAL signals I would like to determine whether a spindle speed change is due to the speed override slider in axis, or due to a gcode Snnn speed change. I don't want to initiate a belt or gear change if it is from override. The only way I've come up with is to monitor the ratio of motion.spindle-speed-out to halui.spindle-override.value. The ratio doesn't seem to change when the override is changed, but does with programmed speed changes. Should this be evaluated over more than one program cycle to accommodate differences in timing between the two signals. Does anyone know a better way to do this? Thanks. Karl Cunningham -- All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity and more. Splunk takes this data and makes sense of it. Business sense. IT sense. Common sense. http://p.sf.net/sfu/splunk-d2dcopy1 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Determine if a spindle speed change is from override?
On 28 September 2011 21:14, Karl Cunningham ka...@keckec.com wrote: I'm writing a user-space program to manage spindle speed on a machine with a VFD for the motor, and drive ratios set by belt and gear changes. This doesn't answer your question, but are you aware that there are realtime modules available to do the same thing? (except they don't initiate the gear change, like you seem to be suggesting) From available HAL signals I would like to determine whether a spindle speed change is due to the speed override slider in axis, or due to a gcode Snnn speed change. I don't want to initiate a belt or gear change if it is from override. I take it checking that testing if the over-ride value is other than 100% isn't the answer? The only way I've come up with is to monitor the ratio of motion.spindle-speed-out to halui.spindle-override.value. The ratio doesn't seem to change when the override is changed, but does with programmed speed changes. Yes, as speed = Svalue * over-ride, dividing by the over-ride leaves you with just the S-value. Should this be evaluated over more than one program cycle to accommodate differences in timing between the two signals. I would be tempted to compare with an old value which is only updated if the difference is more than a certain amount. -- atp Torque wrenches are for the obedience of fools and the guidance of wise men -- All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity and more. Splunk takes this data and makes sense of it. Business sense. IT sense. Common sense. http://p.sf.net/sfu/splunk-d2dcopy1 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] CPR or PPR what are they
On 28 September 2011 22:55, Bruce Klawiter bmkl...@yahoo.com wrote: I don't understand the difference between CPR and PPR, I am thinking it has something to do with the A and B channel being 90 degrees out of phase. If that is the case why is the PPR 4 time higher and not only twice as high. Cycles is the full A+ B+ A- B- cycle. PPR counts both edges of each A and B slot, so is 4x higher. The high the line count the better I would assume. As long as your encoder counting hardware can keep up with PPR x RPS, yes. But the numbers get big pretty quickly. -- atp Torque wrenches are for the obedience of fools and the guidance of wise men -- All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity and more. Splunk takes this data and makes sense of it. Business sense. IT sense. Common sense. http://p.sf.net/sfu/splunk-d2dcopy1 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] CPR or PPR what are they
On 9/28/2011 2:55 PM, Bruce Klawiter wrote: I was looking at this encoder, http://www.usdigital.com/products/e2#description It says: Tracks from 0 to 100,000 cycles/sec 32 to 1250 cycles per revolution (CPR) 128 to 5000 pulses per revolution (PPR) I don't understand the difference between CPR and PPR, I am thinking it has something to do with the A and B channel being 90 degrees out of phase. If that is the case why is the PPR 4 time higher and not only twice as high. You can monitor the rising and falling edges of both a and b channels giving you 4 times the resolution. Also does any one have a recommendation for an encoder, what is a good reliable brand, what CPR or PPR should I get. The high the line count the better I would assume. I think the rule of thumb is to make sure you have at least 10 times more counts than the smallest resolution you want to maintain. More never hurts, but if you have too many the frequency at rapid speed is going to be high causing noise and monitoring issues. I have had good luck with dynapar encoders, there not cheap tho. Read about my conversion here: https://sites.google.com/site/bmklawt/home Regards, Bruce -- All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity and more. Splunk takes this data and makes sense of it. Business sense. IT sense. Common sense. http://p.sf.net/sfu/splunk-d2dcopy1 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- PowerTech Repairs and Contracting LTD. 3-9452 193a St Surrey, BC, V4N 4N4 Ph: (604) 882-3850 Fax: (604) 882-3851 -- All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity and more. Splunk takes this data and makes sense of it. Business sense. IT sense. Common sense. http://p.sf.net/sfu/splunk-d2dcopy1 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Determine if a spindle speed change is from override?
On 09/28/2011 01:56 PM, andy pugh wrote: On 28 September 2011 21:14, Karl Cunninghamka...@keckec.com wrote: I'm writing a user-space program to manage spindle speed on a machine with a VFD for the motor, and drive ratios set by belt and gear changes. This doesn't answer your question, but are you aware that there are realtime modules available to do the same thing? (except they don't initiate the gear change, like you seem to be suggesting) I want it to prompt the operator at the right moment to change belt/gear in response to a Snnn command, but just limit motor speed and not bother him if he's only adjusting the override. From available HAL signals I would like to determine whether a spindle speed change is due to the speed override slider in axis, or due to a gcode Snnn speed change. I don't want to initiate a belt or gear change if it is from override. I take it checking that testing if the over-ride value is other than 100% isn't the answer? I want to ignore override changes, so far as gear changes are concerned. I'll have to limit motor speed to reasonable values, but that's no problem. The only way I've come up with is to monitor the ratio of motion.spindle-speed-out to halui.spindle-override.value. The ratio doesn't seem to change when the override is changed, but does with programmed speed changes. Yes, as speed = Svalue * over-ride, dividing by the over-ride leaves you with just the S-value. Should this be evaluated over more than one program cycle to accommodate differences in timing between the two signals. I would be tempted to compare with an old value which is only updated if the difference is more than a certain amount. That's exactly what I plan to do, but still thought the values might get out of sync for a program cycle or two while the override is being changed. I'll probably have to do some testing. Thanks. Karl -- All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity and more. Splunk takes this data and makes sense of it. Business sense. IT sense. Common sense. http://p.sf.net/sfu/splunk-d2dcopy1 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] calibrating stepper motor cnc
Hi EMC users, I have EMC running on an old pc, latency number about 25000. I got an occasional real time error with latency number set at 22000. I drew a part in CamBam, generated some g-code and cut a part. The part looked right but the caliper says every dimension cut a little small. A circle pocket drawn 1.50 diameter cut about 1.42 in diameter, The tool diameter matched the tool specified in the cad program. Is there a good post on calibrating for a stepper motor machine? Thanks, Marty -- All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity and more. Splunk takes this data and makes sense of it. Business sense. IT sense. Common sense. http://p.sf.net/sfu/splunk-d2dcopy1 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
