THC drives Z opposite, Keyboard drives it normal

[dkerr]

This is a new Proma SD Compact install on a previously working 4x4 table. Hypertherm xp30. Registered MAch3 and Sheetcam

After finally getting it to respond to the test mode, it works in reverse of what it should (I believe)
When the UP arrow lights, the Z motor goes down, when Down arrow lights, the head goes up. From the keyboard wt works normally.

Thoughts,

thanks in advance

Don

[acourtjester]

If the keyboard is working as it should you have the proma up/down signals reversed going into the BOB (in ports and pins input).
Look on the diagnostic page there is a indicator for the up/down there also.

[dkerr]

Thanks for the info.....I found an easier, probably more proper fix. The proma SD has a menu system. The last item in the menu (after holding down the up and down buttons) is POL (polarity). Switching it to -1 from +1 switched the output of the THC, leaving the KB output untouched.

thanks a bunch for the alternate info....I did see the pin assignment in the diagnostic page as another route.

Don