10
DEVICE EXPLANATION
10.14 Convenient Usage of Devices
10.14.2 Local devices
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(4) Setting whether to use a local device (use for each
program)
Note35
Setting whether to use a local device for each program can reduce the scan time. For
the Universal model QCPU, the size of the local device file can be reduced because
the programs not using a local device does not create the area for saving and
restoring data.
(a) Setting method
In addition to the setting in (3) in this section, set the following:
Select "File usability setting" from "Program" in "PLC parameter", and set
programs that use local devices.
Note35
Figure 10.104 Configuration of local device file restoration area
Figure 10.105 File usability setting screen
Universal
UD
Note10.34
When setting local devices for each program in the Universal model QCPU, check the versions
of CPU module and GX Developer. (
Universal
UD
Program A
Program B
Program execution
Local device file (.QDL)
Save/Restore
Scan time decreases because
saving/restoring process is not
performed.
File size decreases because the area
for saving/restoring data for program B
is not created. (Only for Universal model QCPU)
For program A
For program C
Program C
Save/Restore
Save/Restore
File usability setting
Click the
button.
