Mitsubishi Electronics QD75P Software stroke limit function, Pr.13, Workpiece moveable range

12CONTROL SUB FUNCTIONS

12.4.3 Software stroke limit function

MELSEC-Q

In the "software stroke limit function" the address established by a machine OPR is used to set the upper and lower limits of the moveable range of the workpiece. Movement commands issued to addresses outside that setting range will not be executed.

In the QD75, the "current feed value" and "machine feed value" are used as the addresses indicating the current position. However, in the "software stroke limit function", the address used to carry out the limit check is designated in the " Pr.14

Software stroke limit selection". (Refer to Section 9.1.4 "Confirming the current value" or details on the "current feed value" and "machine feed value".)

The upper and lower limits of the moveable range of the workpiece are set in " Pr.12

Software stroke limit upper limit value"/ " value".

Pr.13

Software stroke limit lower limit

The details shown below explain about the "software stroke limit function".

[1]Differences in the moveable range when "current feed value" and "machine feed value" are selected.

[2]Software stroke limit check details

[3]Relation between the software stroke limit function and various controls

[4]Precautions during software stroke limit check

[5]Setting the software stroke limit function

[6]Invalidating the software stroke limit

[7]Setting when the control unit is "degree"

[1]Differences in the moveable range when "current feed value" and "machine feed value" are selected.

The following drawing shows the moveable range of the workpiece when the software stroke limit function is used.

RLS	Workpiece moveable range	FLS
Software stroke limit (lower limit)		Software stroke limit (upper limit)

Fig. 12.15 Workpiece moveable range

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