Yaskawa MP940 Hardware Manual - Manual (Page 47)

MotionSuite™ MP940 Machine Controller Hardware Manual Section 7: Limit Switch Inputs
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If your application does not require limit switches, they can be disabled. To disable
the positive overtravel limit (P-OT), set the SGDH parameter Pn50A.digit3 to “8”.
To disable the negative overtravel limit (N-OT), set the SGDH parameter Pn50B.digit
0 to “8”.
Please read section 5.3.3 of the SGDH User’s Manual for further information.