Problem with geting the machine out of limit sw.

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24 Jul 2016 17:26 #77914 by smal
Dear all
I have a problem getting the machine out of limit switch. When I do a normal homing procedure everything works perfect. Axis are moved to limit switch where they stops and move out accordingly to settings in INI file and machine is ready to use. But if I move manually or by G code command one of axis into limit switch I can not get the machine out of it by software means.
I get following messages from linux cnc when I try to make a homing procedure by pressing ALL ZERO:

6 - joint 2 on limit switch error
7 - command (EMC_AXIS_HOME) cannot be executed until the machine is out of E-stop and turned on
8 - command (EMC_AXIS_HOME) cannot be executed until the machine is out of E-stop and turned on

E STOP RESET is turned to green color and I can see that signal estop-all-ok is TRUE but the step generators for all 3 axis are disabled.
Maybe someone has an idea what to correct or to check?
Best regards
Simon

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24 Jul 2016 18:11 #77918 by andypugh

But if I move manually or by G code command one of axis into limit switch I can not get the machine out of it by software means.


So don't do it :-)

For this situation most of the GUIs have an "Override-Limits" check-box or button.

Which GUI are you using? This is the control in Axis

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24 Jul 2016 18:58 #77922 by smal
I am using mini GUI. Does something similar as limit override exist also in mini GUI? Or are there some other solutions to this problem? I mean to put machine into immediate mode of homing?
Regards
Simon

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24 Jul 2016 19:11 - 24 Jul 2016 19:13 #77924 by Todd Zuercher
I'm not sure where it would be or if it is in mini. but it is in most other interfaces somewhere.
Last edit: 24 Jul 2016 19:13 by Todd Zuercher.
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24 Jul 2016 21:58 #77938 by BigJohnT
There is a bug in 2.7.5 that if you jog into a limit Axis locks up. Revert to 2.7.4 for now.

JT
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24 Jul 2016 22:00 #77939 by andypugh

There is a bug in 2.7.5 that if you jog into a limit Axis locks up. Revert to 2.7.4 for now.


Do you have details on how to revert by a version?

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24 Jul 2016 22:11 #77941 by BigJohnT

There is a bug in 2.7.5 that if you jog into a limit Axis locks up. Revert to 2.7.4 for now.


Do you have details on how to revert by a version?


Open the Synaptic Package Manager and search for linuxcnc, left click on linuxcnc select Package > Force Version and pick 1:2.7.4 then click on Force Version.

JT
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24 Jul 2016 22:30 #77945 by tommylight
Lucky me, i did not upgrade, yet !
Although most of time i do not use limit switches at all, and i do set up’s with and without limit switches for the same machine so i can choose at start up.
Regards,
Tom

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26 Jul 2016 12:49 - 26 Jul 2016 12:50 #78037 by joekline9
I did as John said.
package Manager shows installed version 1:2.7.4 but when I run linuxcnc it still shows 2.7.5. ????
What am I missing

I am using Debian Wheezy
Last edit: 26 Jul 2016 12:50 by joekline9.

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26 Jul 2016 13:10 #78038 by BigJohnT
Did you update and apply the changes in the Synaptic Package Manager?

JT
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