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(3) Local device setting
(a) Setting the local device range
In the Device tab of the PLC parameter dialog box, set the range that is used as a local device.
Note that the local device range is common to all programs, and cannot be changed for each program.
For example, if a local device range is specified as M0 to M100, this range setting applies to all programs that
use the local device.
Program A
M0
Local
device
M100
●
The 32-bit index modification range must not overlap with the local device setting range of the index register.
If overlapped, 32-bit index modification values will be written over the local device values.
●
When CPU module parameters which contains local device setting of the index register are read out from the GX
Developer that does not support the setting, all of the index register data will be read out as global device data.
Figure 9.100 Device
Program B
Local
device
Figure 9.101 Local device range
CHAPTER9 DEVICES
Program C
Locla device
Local
range is
device
common to all
programs.
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