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11 SUB FUNCTIONS
Example
(Operation pattern : Continuous path control)
• If the positioning address of positioning data No. 8 is outside the software stroke
limit range, the operation immediately stops after positioning data No. 7 has been
executed.
Md. 4
Axis operation
status
Setting item
Software stroke
Pr. 1
limit upper limit
value
Software stroke
Pr. 2
limit lower limit
value
Software stroke
Pr. 3
limit valid/invalid
setting
* Refer to section "4.2 List of parameters" for setting details.
Make setting so that the condition of ( Pr. 1 Software stroke limit upper limit value) > ( Pr. 2 Software stroke limit
lower limit value) is satisfied.
If the setting made does not satisfy the above condition, the "Software stroke limit upper/lower limit value error"
error (error code: 901) occurs.
11 - 8
[4] Precautions during software stroke limit check
(1) A machine OPR control must be executed beforehand for the "software
stroke limit function" to function properly.
(2) If an error is detected in the "continuous path control" operation pattern of
positioning control, the axis comes to an immediate stop upon completion of
the execution of the positioning data that precedes the positioning data
where the error occurred.
Positioning
Positioning
data No. 5
data No. 6
Position control
[5] Setting the software stroke limit function
To use the "software stroke limit function", set the required values in the
parameters shown in the following table, and write them to the QD70D.
The set details are validated at the rising edge (OFF
controller READY signal (Yn0).
Setting
value
Set the upper limit value of the moveable range.
Set the lower limit value of the moveable range.
Set whether the software stroke limit is validated or
0 : V a l i d
invalidated.
Immediate stop at
error detection
Positioning
Positioning
data No. 7
data No. 8
Error
Setting details
MELSEC-Q
Positioning date
No. 5
Operation pattern : Continuous
path control
No.6
Operation pattern : Continuous
path control
No.7
Operation pattern : Continuous
path control
No.8
Operation pattern : Continuous
path control
No.9
Operation pattern : Continuous
positioning control
ON) of the Programmable
Factory-set
initial value
2147483647
–2147483648
0: valid
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