BL-Touch not working with Duet2 Wifi

R006

hey,
I am configuring BL-Touch as per below link.
"https://docs.duet3d.com/en/User_manual/Connecting_hardware/Z_probe_connecting."
when i probe @ points BL-Touch is not actuate but it's actuate in it's Up Down & Reset mode.

config:
M950 S0 C"exp.heater3"
M558 P9 C"^!zprobe.in" H5 F120 T6000
G31 P500 X0 Y0 Z2.5

Bed probe:
M280 P0 S160
G1 Z1 F3000
M561
G1 X50 Y50 Z10
G30 S-1
G1 X50 Y250 Z10
G30 S-1
G1 X250 Y250 Z10
G30 S-1
G1 X250 Y50 Z10
G30 S-1
G1 X50 Y50 Z10
M280 P0 S160

Any suggetions?
@dc42 @Phaedrux @jay_s_uk

Phaedrux

Share your full config.g and your deployprobe.g and retractprobe.g files.

Does it respond correctly to M401 and M402?

Check the continuity of the wire connected to heater3 pin.

R006

@Phaedrux
Sorry but i cann't share full config.

retractprobe.g
M280 P0 S90

deployprobe.g
M280 P0 S10

droftarts

@R006 Please post the response to M115 (so we know what firmware version you are using) and pictures of your BLTouch wiring (both at the BLTouch and at the Duet).

If it does the startup test (at power on the pin deploys, retract, deploys again, then retracts), power and ground are connected.
If M401 and M402 work, the PWM wire is connected correctly. If they don't, it isn't.
What value do you see in DWC for the probe value? If it's 1000, the probe is reporting it is already triggered, and that wiring will most likely be incorrect.

Make sure your wiring looks like this:

alt text

See also: https://docs.duet3d.com/en/User_manual/Troubleshooting/BLTouch_troubleshooting
and @Herve_Smith's ultimate BLTouch troubleshooting steps (I told you I would!): https://forum.duet3d.com/post/318461

There are so many threads on the forum about BLTouch. It almost always turns out to be the wiring, so check this carefully first, and the rest are usually configuration (which looks correct for you)!

Ian