Mitsubishi Electric MELSEC-Q QD75M User Manual page 572

12 CONTROL SUB FUNCTIONS
Setting item
Software stroke
Pr.12 limit upper limit
value
Software stroke
Pr.13 limit lower limit
value
Software stroke
Pr.14
limit selection
Software stroke
Pr.15 limit valid/invalid
setting
Refer to Section 5.2 "List of parameters" for setting details.
(5) During simultaneous start, a stroke limit check is carried out for the current
values of every axis to be started. Every axis will not start if an error occurs,
even if it only occurs in one axis.
[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 QD75.
The set details are validated at the rising edge (OFF
signal (Y0).
Setting
value
Set the upper limit value of the moveable range.
Set the lower limit value of the moveable range.
Set whether to use the "
"
Set whether the software stroke limit is validated or
0 : V a l i d invalidated during manual control (JOG operation,
Inching operation, manual pulse generator operation).
[6] Invalidating the software stroke limit
To invalidate the software stroke limit, set the following parameters as shown,
and write them to the QD75.
Software stroke limit
Pr.12
upper limit value
(For manual operation, set "0: software stroke limit invalid" in the "
Software stroke limit valid/invalid setting".)
The set details are validated at the rising edge (OFF
signal (Y0).
When the unit is "degree", the software stroke limit check is not performed during
speed control (including speed control in speed-position switching control or
position-speed switching control) or during manual control, independently of the
values set in Pr.12
REMARK
•
Parameters are set for each axis.
•
It is recommended that the parameters be set whenever possible with GX
Configurator-QP. Execution by PLC program uses many PLC programs and
devices. The execution becomes complicated, and the scan times will increase.
Setting details
Md.20
Md.21 Machine feed value" as the "current value".
=
, Pr.13 and Pr.15
12 - 33
ON) of the PLC READY
Current feed value" or
Software stroke limit
Pr.13
lower limit value
ON) of the PLC READY
.
MELSEC-Q
Factory-set
initial value
2147483647
–2147483648
0: Current feed
value
0: valid
Pr.15