Hello.
I use Metric.
XHC WHB04B is works but not all functions.
1. Feed + - works wrong, one click on "Feed +" - feed going to 200, one click on "Feed -" going to 0.
2. Same with "Spindle"
3.Step doesn't works.
4.While changing from Continuous to Step(or mode rate is not saved.
As example, set rate to 30%, then click on Step and after on Continuous, try to move - rate will be about 20.
So, doesn't matter what rate was before after clicking on Step and after on Continuous rate will be ~20
5.If U click on "Feed +" or "Feed -"  or any "Spindle" and rotate encoder - U cannot back to Continuous mode, clicking on "Continuous" button do nothing.
Only one way to back to Continuous mode is click on Step and after that on Continuous, but rate will be different, about 100%


Best Wishes.

Some update on Mach4 use:

I read somewhere that you should use MPG#1 (not 0)

So I set up the Pendant to use MPG#11 (Have not tried 2-10) and now Step is working:
I can switch between Continuous And Step and can choose between 1.0 (move 1 mm) and 0.1 (move 0.1mm) in step mode.

I have a VistaCNC P4-S connected at the same time (!) as MPG#0 and they both work simultaneously 😊

I know you are going to ask why using a WHB04B when I have a P4-S so I explain:
Yes the P4-S is a fantastic quality (and expensive) piece but its not Wireless and (the Mach4 version) can not run macros..