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10.14 Convenient Usage of Devices
10.14.2 Local devices
10
DEVICE EXPLANATION
(b) Precautions
1) Changing local device
For programs set to "Not used" for local device, do not change or refer to the
local device.
When the local device is changed by a program that does not use local device,
the changed value will not be held.
2) Creation condition of local device file
Creation of a local device file depends on the PLC parameter setting.
Table 9.26 shows the creation condition of local device file.
: Create a file , : Do not create a file
* 1 : It indicates the range setting for local devices in the device setting.
Table10.29 Creation condition of local device file
PLC parameter setting
File creation Error detection
PLC file setting
Device setting
*1
File usability setting
Set
Set
Use PLC file setting ----
Not used ----
Not set
Use PLC file setting ----
Not used ----
Not set
Set
Use PLC file setting
• Universal model QCPU only:
PARAMETER ERROR (Error code:
3000)
• Other than Universal model QCPU:
FILE SET ERROR (Error code:
2400)
Not used ----
Not set
Use PLC file setting ----
Not used ----
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