Bug in #<_current_pocket>

Using version 2.7.7 and 2.8.0 pre, and trying to implement a non random toolchanger, mostly using .ngc code, I have the need to fetch the current_pocket so that the tool is left on the same pocket before moving to the next pocket.

In MDI mode, if issuing (debug,#<_current_pocket>), the value does not make sense and does not match the tool table.
It seems that the current_pocket is broken. For example a tool defined by:

Tool 1
Pocket 14

Issuing (debug,#<_current_pocket>), after tool 1 is loaded, does not return 14, and this was the value that I was expecting.

I saw other implementations that use the current_tool to get the pocket slot, but in this case, the user is limited to place the tool number X in pocket number X, and this does not make sense to me (for example forum.linuxcnc.org/30-cnc-machines/29694...-and-a-few-questions )

I think that current-pocket actually returns the index of the array element where the code is storing the data for the selected tool number.
It is basically not useful.

Thank you Andy,

In this case how do I know the pocket of the current tool in spindle, this is, I need to know the place where I should place the current tool, before "browsing" to the next.

This was partially fixed in iocontrol some time ago. It looks like they didn't get all of it.
git.linuxcnc.org/gitweb?p=linuxcnc.git;a...89072b107882cae36403

The HAL pin iocontrol.0.tool-prep-pocket shows the "pocket number" from the tool table when you issue a "Tn" command.

This is not elegant, but ought to work.
in the HAL
Then in the G-code:

Thank you!

Using this method, and many M66 after, the machine changes tools automatically.



João

The developers are looking at this bug too, hopefully there will be a fix eventually.