Toshiba THL Series Instruction Manual page 75

3) When the mechanical stoppers are changed, be sure to also change the software
limits. Regarding how to change software limits, see Para. 7.2.4 and Fig. 7.8.
After changing the software limit, while pressing the axis 3 brake release switch,
move Axis 3 manually, and make sure that the software limit is correctly set.
Move Axis 3 up
and down.
Fig. 7.7 Checking Software Limit Change (THL300 and THL400)
TRANSPORTATION AND INSTALLATION MANUAL
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Axis 3 brake
release switch
STE 85356