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Messages - Lotus Pack

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1
General Mach Discussion / Re: Old version download
« on: September 22, 2014, 04:58:22 AM »
Ok, it works :-)
Thanks

2
General Mach Discussion / Re: Old version download
« on: September 22, 2014, 04:57:14 AM »
Nope, still can't get to this ftp site!
Can you check it please?
Might be something this end. :(

3
General Mach Discussion / Re: Old version download
« on: September 20, 2014, 03:53:22 AM »
Ok I tried the ftp link this morning and it failed ::), guess it might be down so I will try later.  If in the meantime you could check the sites is up and running I would appreciate it.
Thanks

4
General Mach Discussion / Old version download
« on: September 19, 2014, 10:15:38 AM »
Hi
I have the latest versionMach3 ...66 and the Turn module is not working properly on threading.  I have seen quite a few posts on this subject and it seesm that an earlier version will resolve this problem.  My  question is; where can I download an earlier version of Mach3?  I have tried the download page and can only see the latest versions listed.

Regards

5
General Mach Discussion / Re: Spindle Lock Error G76 Thread Cycle
« on: February 12, 2014, 06:52:27 AM »
Thanks RICH, good advice.

6
General Mach Discussion / Re: Spindle Lock Error G76 Thread Cycle
« on: February 11, 2014, 06:55:49 PM »
Hi Art,
I am using the Little Machine Shop Spindle interface for the Sieg brushless motor spindle drive.  Current setup uses a PWM output from Mach3 through a low band pass filter and into the 0-5 volt AVI on their board. There is no RPM state or one time frequency to set a spindle speed, so I am pretty sure there is no battle going on between two regulators here. But, thanks for your point and may move over to a Mobus control instead a bit later.  After all, I do get a good thread of the first PC, it is only the second PC that is producing the Spindle Lock error information and causing threads to come out wrong.

FYI
The interrupt handler on the PC is working fine according to the driver test.
Ok there is a significant difference here, the LastRot shows about 30rpm difference, under no load, recon you are right with the interference thought.
Investigation so far, have found a level of background noise on the Index pin, coincidently a shade lower frequency than the spindle pulses at 250rpm, in fact, hit the spindle button, turn the spindle off while the thread cycle is running and the thread still engages after seeing a trigger, the spindle is stooped so the trigger should never arrive. The Index LED stops flashing while the spindle stops. The interference is a spike that lasts a tiny amount of time, much higher voltage so I am guessing the spike is enough to trigger a thread pass.

Still think this is a combination of issues. Found a GND inconsistency on the controller, Opto-isolator with active low not linked to the PC GND.  Needs to be active high and linked to PC GND then filter some of this noise out with strategically placed caps and ferrite rings.    Now I understand the Spindle Lock errors I can test and check the results shown in the log.

No need to reply.
LP

7
General Mach Discussion / Re: Spindle Lock Error G76 Thread Cycle
« on: February 11, 2014, 03:53:22 PM »
Got it, thanks Art.  Think you are right with your prognosis. This was run in the air!
On the case now!  I will get back with the results as soon as complete or abandoned!
What does the LastRot: parameter signify?
 
I will focus on the Spindle PWM stability first, as it ran slow before hitting the material and get my scope on the pins and trace where the fluctuation is coming from.  This really helps with the starting point for the analysis.  

Thanks Hood for your input too.
LP

8
General Mach Discussion / Re: Spindle Lock Error G76 Thread Cycle
« on: February 11, 2014, 07:12:09 AM »
Yes, having some synchronisation problems on this PC so the error seems logical.  It seems to me that Mach3 is detecting some timing errors and therefore kicking out these lines in the error log file. The thread is indexing ok to start but something is interfering with the progress through the thread length and it sometimes changes pitch toward the end of the thread.  Which is why this error is so intriguing, It may be the PC has its own timing issue.  Is there anyone that can determine what part of the program actually produces these error condition messages?
LP

9
General Mach Discussion / Re: Spindle Lock Error G76 Thread Cycle
« on: February 10, 2014, 05:48:00 PM »
Hi Hood,
Ok, done...the XML modification.
Checked the diags are off in the enclosed XML ...LP5.
Run produced results in error file ...LP5

Still producing erros, I recon it is a version thing as yoiu say!

Sorry but I must go to bed now as I have been up for over 16hrs...
Latest files enclosed...
Regard
LP

10
General Mach Discussion / Re: Spindle Lock Error G76 Thread Cycle
« on: February 10, 2014, 05:27:32 PM »
BTW Updated my profile with the 5 hrs difference...so the time should now be international. :)

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