Filter
Top Products
CHAPTER9 DEVICES
9
2
3
4
5
6
7
8
9.14 Convenient Usage of Devices
9.14.2 Local device
9 - 89
● If the size setting of the local device in the standard RAM is changed with a sampling trace file stored in the standard
RAM, the sampling trace file is cleared.
To save the trace results in your personal computer, perform the following operations.
1) Click the button on the Sampling trace dialog box to read the trace result into the
personal computer. ( Section 6.14(5)(e))
2) Click the button to display the trace result.
3) Click the button to store the trace results in CSV format.
● All of the devices that have not been set as local devices are global devices.
(4) Setting of whether to use a local device (for each program) Note9.8Note1
Use of the local device can be set for each program, and this function can reduce the scan time.
Also, since the area for saving and restoring data is not required for the programs not using a local device, the
local device file size can be reduced.
Note1
Figure 9.105 Save area configuration of a local device file
Trace result PLC read
Trace result
Create CSV file
Note9.8
For setting a local device for each program in the Q02UCPU, Q03UDCPU, Q04UDHCPU, Q06UDHCPU,
Q13UDHCPU, and Q26UDHCPU, check the versions of the CPU module and GX Developer. ( Appendix 2)
Universal
Program A
Program B
Program C
Program execution Local device file (.QDL)
Save/Restore
Save/Restore
Save/Restore
File size can be reduced since the saving or
restoring area for program B is not created.
For program A
For program C
Scan time decreases because saving
/restoring process is not performed.