Mesh not showing on DWC &....

brs

My F430 just finished commissioning. For the most part it all has gone well. However the Mesh has given me several questions.

Problem:
(1) After doing a mesh probe (via G29) the mesh page is just a black blank space.
(2) Though I have the bed mesh area set as "Y75:250, probing only goes to Y-150 then terminates without error.

Questions:
(A) Do I have to issue a specific command to make the mesh show up on DWC. I've tried clicking everything that makes sense to click.
(B) After defining the z-probe (BLTouch) offset via "G31 P500 X-5 Y75" does "M557 X15:400 Y75:250 S30" take this into consideration? Bed is actually 400x300 but I want to be careful that I don't try to probe off the edge of the bed or fail to probe the entire bed.
(C) With the code below, is there any reason probing would stop at Y-150 and not continue another row or two?

; Endstops
M574 X1 S1 P"io1.in"                     
M574 Z2 S2                               

; Z-Probe
M950 S0 C"io7.out"                        
M558 P9 C"io7.in" H5 F120 T6000          
G31 P500 X-5 Y75 Z3.1                           
M557 X15:400 Y75:250 S30

Phaedrux

What firmware and DWC version do you have installed?

brs

@phaedrux

For some reason the Mesh was working today when I first started DWC. I had HOMEd everything but did not do a z-probe. Your question did get me to realize the mismatch of software.

RRF for Duet 3 MB6HC 3.4.0 (2022-03-15)
<just now upgraded to 3.4.1>

Duet Web Control 3.4.1

Everything is figured out and working. What confused me was understanding the M557 wants locations of the probe not the head. I had been giving it head locations and making calculations to be sure the probe remained on the build plate. This bit of information is not clear on the RRF Config Tool.

Thanks