Even being correct, activating z-probe would lead to forbidden xy position

sysphp

My sensor is behind the hotend and to the right of it. so I have configured it that way, but nevertheless, it throws me "Error: the activation of the probe z would result in a prohibited position and x: -39.000000, 17.00" when x is positive in my configuration.

In the code from "BedLeveling.cpp" line 516, I can see that "Printer :: currentPosition [X_AXIS]" is zero. therefore, "Printer :: currentPosition [X_AXIS] - ZPOffsetX" = -39

the only but wrong way I found to make it work was setting offset_x to 0, and probe_x to 0. Can you help me? below I leave a copy of my configuration.

Thx!!!

#define Z_PROBE_X_OFFSET 39

#define Z_PROBE_Y_OFFSET -21

#define Z_PROBE_WAIT_BEFORE_TEST 0

#define Z_PROBE_SPEED 3

#define Z_PROBE_XY_SPEED 100

#define Z_PROBE_SWITCHING_DISTANCE 1

#define Z_PROBE_REPETITIONS 1

#define Z_PROBE_USE_MEDIAN 0

#define Z_PROBE_HEIGHT 1.1

#define Z_PROBE_DELAY 0

#define Z_PROBE_START_SCRIPT "M340 P0 S700"

#define Z_PROBE_FINISHED_SCRIPT "M340 P0 S1500"

#define Z_PROBE_RUN_AFTER_EVERY_PROBE ""

#define Z_PROBE_REQUIRES_HEATING 0

#define Z_PROBE_MIN_TEMPERATURE 150

#define FEATURE_AUTOLEVEL 1

#define FEATURE_SOFTWARE_LEVELING 0

#define Z_PROBE_X1 45

#define Z_PROBE_Y1 15

#define Z_PROBE_X2 190

#define Z_PROBE_Y2 15

#define Z_PROBE_X3 45

#define Z_PROBE_Y3 200

MartinH

Not sure about X  but if the probe is behind (towards back) of nozzle then Y offset should be positive,
#define Z_PROBE_Y_OFFSET 21

Repetier

Also being right to extrude rmeans when you activate it the head must move 39mm to the left so probe is where nozzle was before. If you do that at x=0 you need to go to x=-39 which is outside your configured area I guess.

sysphp

Sorry but i can't upload the pic.
There is my machine: https://imgur.com/a/mqJQmOo

MartinH, sorry but I expressed poorly.
In the photo, the hotend is approximately at x100: y70 therefore, the 3dtouch is at x139: y49 as I understand.
And my Home x position is at left.

I do not understand this "If you do that at x=0 you need to go to x=-39 which is outside your configured area I guess." My Z-probe x1,x2,x3  > 45 mm. Why would it go to x = 0?

Repetier

It activates z probe at start of G32 so if you just homed you are at x=0, also measuring probe points would work. Go to bed center when you start G32 or G33 and you should not have that problem. If you home using z probe use order with preheat so you can set a probe point.

sysphp

Repetier said:

If you home using z probe use order with preheat so you can set a probe point.

it was that! Is this documented somewhere? because I could not find this detail in another place.

Repetier

Maybe not. Docs are old. For the V2 firmware I'm writing new docs with more informations, also V2 will have more automatic fixes for leveling.