My Haas tech had originally set up my WIPS spindle probe as T31, however I wanted it in T1 to match my other machines. The process went as follows:

• Move probe in the tool table as you would a normal tool, i.e. zero out the old T31, fill in tool details in T1.
• Do the whole spindle and tool probe setup dance using the VPS/macros as described in this YouTube video by Haas.

Now the probe should be fine for most VPS probing macros, however for me the "vice corner" macro errored out with 941 POCKET-TOOL TABLE ERROR. It turns out the probe tool number macro variable hadn't been updated. This macro seems to use different subroutines to the other ones, which might be why only it is broken.

To update the macro:

• Hit the Current Commands button, tab over to Macro vars, then down to the (Global) 10400-105999 column.
• Page down to var 10560 (this is equivalent to legacy macro number 560).
• Set the value to e.g. 1.0 for T1. This was originally 31.00000 for my T31.

I figured this out from the troubleshooting page which mentions 560: Tool number for the OMP40-2 probe under OMP40-2 - Macro Variables.