Lathe : 2nd turret over limit switch
- vibram
- Offline
- Senior Member
-
Less
More
- Posts: 48
- Thank you received: 1
14 Oct 2025 08:55 #336416
by vibram
Lathe : 2nd turret over limit switch was created by vibram
Attachments:
Please Log in or Create an account to join the conversation.
- langdons
-
- Offline
- Platinum Member
-
Less
More
- Posts: 702
- Thank you received: 77
14 Oct 2025 21:52 #336453
by langdons
Replied by langdons on topic Lathe : 2nd turret over limit switch
Limit switches probably can't and shouldn't be disabled.
Do you need a limit switch there?
So long as the machine is homed, it won't exceed the soft limits unless the computer goes completely rogue.
Hard limits are preferable, but not always 100% necessary.
Do you need a limit switch there?
So long as the machine is homed, it won't exceed the soft limits unless the computer goes completely rogue.
Hard limits are preferable, but not always 100% necessary.
Please Log in or Create an account to join the conversation.
- langdons
-
- Offline
- Platinum Member
-
Less
More
- Posts: 702
- Thank you received: 77
14 Oct 2025 22:30 - 14 Oct 2025 22:30 #336458
by langdons
Replied by langdons on topic Lathe : 2nd turret over limit switch
Are your switches wired as normally open or normally closed?
For a normally open switch, you can just disconnect it.
For a normally open switch, just somehow short the connection so it never trips.
Though that could be pretty dangerous.
Disable a limit switch at your own risk!
For a normally open switch, you can just disconnect it.
For a normally open switch, just somehow short the connection so it never trips.
Though that could be pretty dangerous.
Disable a limit switch at your own risk!
Last edit: 14 Oct 2025 22:30 by langdons.
Please Log in or Create an account to join the conversation.
- vibram
- Offline
- Senior Member
-
Less
More
- Posts: 48
- Thank you received: 1
15 Oct 2025 04:57 #336472
by vibram
Replied by vibram on topic Lathe : 2nd turret over limit switch
I tried to do it correctly so I wired them as normally closed. I have 2 limit switches on the axis and this one is also my home switch.
If I follow your advice then I need to revert everything to have the other LS as HS. This is not an issue to be honest, just thinking about the consequences.
If I follow your advice then I need to revert everything to have the other LS as HS. This is not an issue to be honest, just thinking about the consequences.
Please Log in or Create an account to join the conversation.
- langdons
-
- Offline
- Platinum Member
-
Less
More
- Posts: 702
- Thank you received: 77
15 Oct 2025 22:10 #336518
by langdons
Replied by langdons on topic Lathe : 2nd turret over limit switch
Set it only to HOME, not HOME+LIMIT, that way you can technically cross the switch if the machine is not homed.
In fact, you can probably allow movement past the home switch properly in the config or stepconf or whatever.
I don't think the home switch needs to necessarily be at the end of the travel.
Mid-travel home switches should be possible.
In fact, you can probably allow movement past the home switch properly in the config or stepconf or whatever.
I don't think the home switch needs to necessarily be at the end of the travel.
Mid-travel home switches should be possible.
Please Log in or Create an account to join the conversation.
- langdons
-
- Offline
- Platinum Member
-
Less
More
- Posts: 702
- Thank you received: 77
15 Oct 2025 22:20 - 15 Oct 2025 22:25 #336521
by langdons
Replied by langdons on topic Lathe : 2nd turret over limit switch
Perhaps you will find this post helpful: forum.linuxcnc.org/49-basic-configuratio...iguration-and-homing
It's really old though.
I recommend you make a new config from scratch, if you use either StepConf or PNCConf, and play around with the limit switch settings so moving past the home switch is "allowed" up to a certain distance.
Bear in mind that the default values are default for a reason.
If your new config does not work, it will probably be easier to scrap it and create a new one.
Keep your current config as a fallback option though.
It's really old though.
I recommend you make a new config from scratch, if you use either StepConf or PNCConf, and play around with the limit switch settings so moving past the home switch is "allowed" up to a certain distance.
Bear in mind that the default values are default for a reason.
If your new config does not work, it will probably be easier to scrap it and create a new one.
Keep your current config as a fallback option though.
Last edit: 15 Oct 2025 22:25 by langdons. Reason: Added further recommendations.
Please Log in or Create an account to join the conversation.
- andypugh
-
- Offline
- Moderator
-
Less
More
- Posts: 19678
- Thank you received: 4559
16 Oct 2025 00:07 #336528
by andypugh
Replied by andypugh on topic Lathe : 2nd turret over limit switch
The _joint_ (ie the actual moving part of the lathe) is not outside the joint limits.
However the drill chuck _is_ outside the Axis (XYZ) limits.
The INI specifies the joint and axis limits separately. You might just need to able to set the axis limits to allow a very negative Z (deep down the spindle bore is very reasonable for a long drill)
However the drill chuck _is_ outside the Axis (XYZ) limits.
The INI specifies the joint and axis limits separately. You might just need to able to set the axis limits to allow a very negative Z (deep down the spindle bore is very reasonable for a long drill)
Please Log in or Create an account to join the conversation.
Time to create page: 0.189 seconds