XHC WHB04B development?

Short update on that, Hannes. 
While in auto mode and running a program it doesn't show F: nor S:
It does react on Feed+/- and Speed+/- but only on displayed values in the HMI, not the pendant display.
In Man mode it shows F: and S: in the way one expect.

Hmm, mine shows always 0. In Mach3, Mach4 and LinuxCNC.

I'm pretty sure I just have a variant with a different buggy firmware than yours.

However, if you have time to spare, you can comment out the line in my last post, recompile linuxcnc and send me the result. Which version of LinuxCNC are you using?

I just had an idea: I don't need A/B/C, so I wired the feeds to these channels. It works way better anyway and I can use the jog wheel.

You can not use this in MDI mode due to when jogging, the WHB automatically changes to manual mode.
In auto mode with linuxcnc 2.9.8 without my patch, you probably will get a lot of error messages due to the whb wants to change from auto to manual. But this is gone with this fix:
github.com/LinuxCNC/linuxcnc/pull/3810/c...f939ee3cfb99275R1344

See  after:
#Rewire feeds to A/B/C