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24 DEVICE/LABEL INITIAL VALUE SETTINGS
24.2 Applicable Devices/Labels
24.2 Applicable Devices/Labels
For details on devices/labels to which initial device/label values can be set, refer to the following.
GX Works3 Operating Manual
24.3 Precautions
This section describes the precautions when using the initial device/label value setting.
• When initial device values or initial label values are overlapped with the latch range, these initial values take precedence
over the latch range. Therefore, even if a device or label is already latched, its values are changed to the specified initial
values.
• The initial device value and initial label value are also set when the CPU module status changes from STOP to RUN.
*1
Therefore, the initial device value and initial label value cannot be used for areas that are not desirable to be set when the
CPU module status changes from STOP to RUN (because they should be set when the power is turned off and on, and
changed by the program). By using the MOV instruction, for example, create a program to set an initial value to the
specified device or label. In addition, if it is a module access device, make sure to write the initial value in the buffer memory
by using the TO instruction.
*1 For details on the initial label value setting for the Process CPU and SIL2 Process CPU, refer to the following.
Page 322 LABEL INITIALIZATION FUNCTION
• To make the CPU module hold a device only when its values fall into the range of device initial setting (such as module
access device and link direct device), the start-up time between the device and the CPU module must be synchronized
using the CPU parameter, "Module Synchronous Setting".
[CPU Parameter] [Operation Related Setting] [Module Synchronous Setting]
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