Stroke End (H/W Ot) - Mitsubishi Electric M700VS Series Setup Manual

MITSUBISHI CNC
8 Setting the Tool Entry Prohibited Range
Following functions are available for setting a tool entry prohibited range to detect over travels (OT).

(1) Stroke end (H/W OT)

The limit switch signal will detect the stroke end and limit the movement of the axis.
(2) Stored stroke limit (S/W OT)
Prohibited ranges are set with parameters.
(1)
When stroke end (H/W OT) is set, the axis will move the distance required to decelerate and stop after H/W OT is
activated.
When stored stroke limit (S/W OT) is set, the axis will stop before the prohibited range of S/W OT including the
deceleration distance.
For safety, set the stroke end (H/W OT) and also, the stored stroke limit (S/W OT).
Stroke end (H/W OT) and stored stroke limit (S/W OT) must always be set. If not, the tool may
WARNING
hit the machine end.
8.1 Stroke End (H/W OT)
The axis movement is controlled by the limit switch which detects the stroke end.
Signal device No. is allocated by the following parameters.
Parameter "#2074" and "#2075" will be valid only when "#1226 aux10/bit" is set to "1".
#1226 aux10/bit5: Set to "1" (assigning the signal is valid).
#2074 H/W OT+: Set the input device for assigning the OT (+) signal. (Setting range 0000 to 02FF (Hexadecimal))
#2075 H/W OT-: Set the input device for assigning the OT (-) signal. (Setting range 0000 to 02FF (Hexadecimal))
(Note 1) When "OT IGNORED" (R248) signal is set to ON, the stroke end signal associated with a specific control axis
can be ignored.
(Note 2) When parameter "#1226 aux10/bit5" is set to "1", do not set the same device No. to #2073 to #2075.
Setting the same device No. may cause the emergency stop. However, the device number will not be checked
for the axis which is set the signal to ignore (R248,R272).
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(2) (2) (1)