Machsupport Forum

Mach Discussion => Mach4 General Discussion => Topic started by: daffyduck on August 27, 2021, 01:40:32 PM

Title: MACH4 G31 MOTION WILL NOT STOP ON PROBE CONTACT
Post by: daffyduck on August 27, 2021, 01:40:32 PM

Hello,

I am running Mach4 with Pokeys57CNC

Sorry to post a new topic on G31.  I've tried searching the forum archives and can't find a similar problem / solution.

The problem is when I run this gcode command in the MDI (as a test) the z axis does not stop on probe contact.

G31 Z-10 F50

I can run probing with no issues using the Probing Wizard.  Also the Touch light indicates contact during the move (using the gcode above).

Not sure what I am missing.

Anyone else had this issue?

Thanks.

Title: Re: MACH4 G31 MOTION WILL NOT STOP ON PROBE CONTACT
Post by: smurph on August 29, 2021, 04:49:52 PM

Hi,

Since probing is a real-time process, it must be handled entirely by the motion controller.  So I would investigate the settings of the Pokeys.

Steve

Title: Re: MACH4 G31 MOTION WILL NOT STOP ON PROBE CONTACT
Post by: daffyduck on August 30, 2021, 04:49:10 PM

Thanks Steve

Title: Re: MACH4 G31 MOTION WILL NOT STOP ON PROBE CONTACT
Post by: gorf23 on August 31, 2021, 01:43:51 PM

I haven't had any probing problems with the pokeys57CNC make sure you are wired to pin 19 on pokeys and on some of the older boards you need to add a i think pullup resistor to pin 19  but been a while and don't remember for sure, the only drawback for me is it won't work with more that one probe connected..

Title: Re: MACH4 G31 MOTION WILL NOT STOP ON PROBE CONTACT
Post by: smurph on August 31, 2021, 04:00:39 PM

Quote from: gorf23 on August 31, 2021, 01:43:51 PM

I haven't had any probing problems with the pokeys57CNC make sure you are wired to pin 19 on pokeys and on some of the older boards you need to add a i think pullup resistor to pin 19  but been a while and don't remember for sure, the only drawback for me is it won't work with more that one probe connected..

Wow.  Good information.  Thanks!

Steve

Title: Re: MACH4 G31 MOTION WILL NOT STOP ON PROBE CONTACT
Post by: daffyduck on August 31, 2021, 07:04:25 PM

Thanks gorf23!

Yup wired on pin 19.  Usually I don't have a problem.  It seems at times either Mach4 or Pokeys "looses itself"  I can't quite figure out how or why.

Title: Re: MACH4 G31 MOTION WILL NOT STOP ON PROBE CONTACT
Post by: KatzYaakov on August 31, 2021, 11:00:07 PM

more then 10 machines ,all pokeys,all have probe ,never had problems,folow pokeys instruction