Machsupport Forum

Mach Discussion => General Mach Discussion => Topic started by: baldysm on December 04, 2008, 02:56:24 PM

Title: external estop requested problems
Post by: baldysm on December 04, 2008, 02:56:24 PM

I'm having a problem with Mach 3 at the moment.

Seemingly randomly, Mach3 will stop and need me to click the reset button. I get the message that an external e-stop was requested. I click reset, and cycle start and it starts going again. It doesn't loose position, but the next few lines of gcode are screwy, and I almost always violate and scrap out the part.

I have a 5 hour long 4 axis program that I am cutting on a Sherline mill the IMServices's controller and servos. I have run the program before with no problems, and Mach 3 doesn't stop at a consistent point in the program. So the problem is not the program.

I had this same problem a couple months ago, and it went away. Now it's back. Nothing changed that I am aware of. Same PC, controller, version of Mach, servos, etc.

Any suggestions on how to fix this? Is it possible to tell mach to ignore external estops entirely?

Thanks!
Scott

Title: Re: external estop requested problems
Post by: Hood on December 04, 2008, 04:40:51 PM

Most likly cause is noise in your limit switches, try setting the debounce interval to 2000 and if that works lower it until the problem reapears then raise slightly.
Hood

Title: Re: external estop requested problems
Post by: baldysm on December 04, 2008, 05:37:30 PM

Thanks Hood.

I don't have any limit switches on the machine.

The debounce interval was set to 0, so I set it to 1000 and am running it now, cutting air. I'll check in the morning to see if it went through the program.

There is also a index debouce, which is also currently set to 0. Could that have anything to do with the problem?

Neither of these terms mean a thing to me.

Thanks!
Scott

Title: Re: external estop requested problems
Post by: Hood on December 04, 2008, 05:41:43 PM

Index debounce is for the spindle index pulse and wont cause any problems with the E-Stop.

Hood

Title: Re: external estop requested problems
Post by: Overloaded on December 04, 2008, 06:16:41 PM

Hi Scott,
  Here is a brief description of the debounce settings.
RC

Title: Re: external estop requested problems
Post by: robreeve on January 16, 2014, 04:36:17 PM

Scott, did this fix your problem? I am having the same thing right now?

Title: Re: external estop requested problems
Post by: Chaoticone on January 16, 2014, 06:16:15 PM

This link may help.

http://www.machsupport.com/forum/index.php/topic,25616.msg180583.html#msg180583

Brett