Applicable Devices/Labels; Precautions - Mitsubishi Electric MELSEC iQ-R Series User Manual

30.2

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
30.3

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.
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, refer to the following.
Page 522 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]
Window
• In redundant mode, the device/label initial value specified for the control system is reflected in the buffer memory of the
module on the extension base unit by powering off and on the CPU module of the control system or switching the operating
status of the CPU module from STOP to RUN.
30 DEVICE/LABEL INITIAL VALUE SETTINGS
30.2 Applicable Devices/Labels
*1
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