@zerspaner_gerd
Thank you sir! That's it! in order to move the bed away from the nozzle, the value must be negative not positive!
; Tools
M563 P0 D0 H1 ; Define tool 0
G10 P0 X0 Y0 Z0 ; Set tool 0 axis offsets
G10 P0 R0 S0 ; Set initial tool 0 active and standby temperatures to 0C
M563 P1 D1 H2 ; Define tool 1
G10 P1 X0 Y0 Z-30 ; Set tool 1 axis offsets
G10 P1 R0 S0

@phaedrux Thanks for the link. Never seen this documentation website before.

@phaedrux
Thank you again! now it's doing better after changing the direction of the coordinate to as you mentioned.
Strange that I have never seen a topic explaining the importance of this issue.

@phaedrux
Thanks for the input, I'll modify the firmware so that it uses my endstops as max instead of min. And will change the X&Y offsets to negative. Then I'll test the probing reach.
However I never got a reversed printed part with my current setup (I printed my owen designs and STLs from the internet).
All texts and images are printed correctly.
I'll get back with my configurations and homing files.

@fcwilt Thanks for the input, but again my problem is why it's not reaching the end towards Y max.

@fcwilt The picture I attached shows the movements of my printer. I don't really understand the point of right and left. The firmware should determine the directions based on X min and Y min. The probe is towards X max and Y max. It shouldn't matter right or left as long as the offset is in correct value ( + or -).
In my case X max is on the left in the picture.
Y max is on the front in the picture.

Here's where the it stops (near Y max) but there are like 5-6cm extra on Y.

@fcwilt

In my case, when I'm in front of the printer, X mini endstop is on my right, and the probe is on the other side of the nozzle (my left).
And Y mini endstop is in the back right corner, +Y moves forward towards me.

@fcwilt I understand that it should skip towards mini, but why it's skipping towards max?
My probe is located towards max in both X and Y.

@phaedrux said in Probe reach area:

Are you sure your probe offsets are correct?

Remember, -X should move left, +X should move right
-Y should move to the nozzle to the front of the bed, +Y to the back.

Yes they're correct, but I'm not sure if the X and Y offsets should be positive or negative.

In my case, when I'm in front of the printer, X mini endstop is on my right, and the probe is on the other side of the nozzle (my left).
And Y mini endstop is in the back right corner, +Y moves forward towards me.

I don't really understand where my problem is.
Here are some pictures, notice the I checked the box to flip plate on X on Simplify3D to match the printer setup.

@rjenkinsgb There's still a good distance after the probe in Y, I tried to increase Y distance to even 370, but still it stops reaching way earlier.
What you mean by reducing the grid? Maybe I should increase both max Y limit and max Y for the probe to 370 or more? (The physical Y limit is at 365).