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4 DATA USED FOR POSITIONING CONTROL
Emergency stop
limit switch
4 - 10
Pr. 1 Software stroke limit upper limit value
Set the upper limit for the machine's movement range.
Pr. 2 Software stroke limit lower limit value
Set the lower limit for the machine's movement range.
Software stroke
limit lower limit
OP
Fig. 4.1 Software stroke limit setting example
1) Generally, the OP is set at the lower limit or upper limit of the stroke
limit.
2) By setting the upper limit value or lower limit value of the software
stroke limit, overrun can be prevented in the software. However, an
emergency stop limit switch must be installed nearby outside the range.
Pr. 3 Software stroke limit valid/invalid setting
Set whether to validate the software stroke limit.
0: Valid
1: Invalid
Pr. 4 Current feed value during speed control
Specify whether you wish to enable or disable the update of " Md. 1 Current feed
value" while operations are performed under the speed control (including the
speed-position and position-speed switching control).
0: No update
The current feed value will not change.
(The value at the beginning of the speed control will be kept.)
1: Update
The current feed value will be updated.
(The current feed value will change from the initial.)
2: Clear to 0 and no update
The current feed will be set initially to zero and not
updated. (The value be kept "0".)
Pr. 5 Speed limit value
Set the maximum speed for OPR control, positioning control and JOG operation.
The speed limit value is determined by the following two conditions.
• Motor speed
(Machine movement range)
• Workpiece movement speed
MELSEC-Q
Software stroke
limit upper limit
Emergency stop
limit switch
4 - 10
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