@Phaedrux Thank you, that got it working!

@Phaedrux That Z axis error regarding the motor phase was indeed a faulty connection, it's been repaired. Thank you.

The home files are below. FYI, I have not altered these; when I do a home all, it pushes the bed all the way back in the Y axis to home it, which leaves the bed well behind the Z axis probe. So after homing X and Y, it moves the Z down, but the bed is no longer under the Z probe. I suppose I'll need to add something to move the bed forward again after the Y axis is homed; my bigger problem is that the pin on the Z probe doesn't extend.

homeall.g
homex.g
homey.g
homez.g

@dc42 M401 and M402 commands work as expected.

@aidar thanks, I've changed it, but that doesn't appear to have done anything

@Phaedrux
M574 Z1 S1 P"!zstop" ; configure active-low endstop for low end on Z via pin zstop

; Z-Probe
M558 P9 C"^zprobe.in" H5 F100 T2000 ; Set Z Probe to type BLTouch
M950 S0 C"exp.heater3"
G31 X0 Y0 Z3.3 P25 ; Set Z probe trigger value, offset and trigger height
M557 X20:200 Y20:200 S40 ; define mesh grid

@Phaedrux yes:

Firmware Name: RepRapFirmware for Duet 2 WiFi/Ethernet
Firmware Electronics: Duet WiFi 1.02 or later
Firmware Version: 3.0 (2020-01-03b3)
WiFi Server Version: 1.23
Web Interface Version: 1.22.6

@Phaedrux M280 P0 S10

I have an Anet A8 with a BLTouch probe and E3D hotend that I've been trying to set up with a Duet 2 Wifi board.

I was able to get the board to recognize the Z probe, however when I tried to home the Z axis, it never deployed the pin on my BLTouch probe, and instead just rammed the unit into my print bed. The probe will respond to gcode commands such as M280 P0 S120.

Also, I get the following message when I try to move the Z axis by more than 0.5mm: “Warning: motor phase B may be disconnected reported by driver(s) 2”

Any ideas what might be causing this? I have already read through https://duet3d.dozuki.com/Wiki/Connecting_a_Z_probe several times, it isn't helping. I've attached my config.g file: config.g

config.g

I am setting up a Duet 2 Wifi on my Anet A8 and just updated the firmware to the most recent version.

On https://configtool.reprapfirmware.org/Start when I select Firmware version: 3.0 or later:
on the page I/O Mapping, under Z-Probe the Pin "PWM Control Channel (BLTouch only)" defaults to "(not assigned)"; should I change this, and if so to what?
on the page "Endstops" the BLTouch option is no longer available;

Also, when running the "Check Heater Functionality" test in setup, the bed heater rises about 2-3 degrees above ambient, then generates the following error message and stops:
Error: Heating fault on heater 0, temperature rising much more slowly than the expected 1.8°C/sec
That expected rate seems very unrealistic to me, using my stock board it would typically take at least 5 minutes to reach 70C from ambient which is closer to 0.1-0.2C per second.

How can I fix this?

@Veti Thank you, this fixed the thermistor problem.