Rostock 301 z Calibration

[raoulito9]

Hi.
I'm used to delta calibration because i had a G2S, i now have a 301.
My problem is tha i can't find where to modify the fact that the printer compensates a "concav shape" of the bed.
For G2S, in MArlin, it was easy in config H, but i can't find this in 301 Firmware.
The effect is that if the head is on Z=0 close to each of the 3 towers (y, or y or Z), perfect distance from bed, at the center of the bed (X=,Y=0, Z=0), the head is at 1 mm from it.
As if my bed was concav.
Where can i ajust this ?

Thank you for help/.

[William]

Hi,
Modify the value "Delta Radius" on the LCD controller panel,see my picture plz:

QQ截图20160918085524.jpg (21.08 KiB) Viewed 6371 times

[raoulito9]

Thank you William.
This worked well.