Precautions - Mitsubishi Electric MELSEC iQ-F FX5 Programming Manual

4.7

Precautions

Functions with limitations
In the following functions, there is a limitation on label use.
Item
Trigger of an event execution type program
Intelligent function module refresh setting
■Defining and using a global label with a device assigned
Define a global label following the procedure below, and use it when the functions having restriction on the use of labels are
executed.
Since the device area in the device/label memory is used, reserve device area capacity.
1.
Reserve the device area to be used.
CPU Parameter  Memory/Device Setting  Device/Label Memory Area Capacity Setting
2.
Define a label as a global label, and assign a device manually.
3.
Use the label defined in step 2 for the functions having no restrictions on the use of labels. Use the device assigned to
the label for the function having restrictions on the use of labels.
■Copying the label data into a specified device
Copy the label data into a specified device following the procedure below, and use the copy-target device.
Since the device area in the device/label memory is used, reserve device area capacity.
1.
Reserve the device area to be used.
CPU Parameter  Memory/Device Setting  Device/Label Memory Area Capacity Setting
2.
Create a program using the label. The following is the program example for copying the data. (The data logging function
uses the data in udLabel1.)
SM400
3.
Use the device where the data has been transferred in step 2 for the function having restrictions on the use of labels. (In
the program example in step 2, use D0.)
When copying a value of a label to another device by a transfer instruction, note that the number of program
steps increases. In addition, when adding a transfer instruction on a program, consider execution timing of the
function to be used.
Description
Labels cannot be used. Consider taking the following measures.
• Use devices.
• Define a label to be used as a global label and assign devices to the global label.
Labels cannot be used. Consider taking the following measures.
• Use devices.
DMOV udLabel1 D0
4 LABELS
4.7 Precautions
4
31