Mitsubishi Electric MELSEC iQ-R Series User Manual page 509

Process cpu module

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The Process CPU with the firmware version "28" or later controls global labels in the global label settings by

One global label setting is shown as one block as below.

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Set the global label setting for each label used with GOT in units of blocks.

When "Perform the label name resolution in global label block unit" is selected in the GT Designer3 setting,

the label name resolution after online change is processed efficiently. However, during online change that

involves addition of blocks, label names are resolved collectively, not in units of blocks.

For the GT Designer3 setting, refer to the following.

 GT Designer3 (GOT2000) Screen Design Manual

The following shows an example of access to three GOT units.

• "Global": Global label setting that compiles labels accessed from multiple GOTs (GOT to GOT)

• "Global1": Global label setting that compiles labels accessed from GOT

• "Global2": Global label setting that compiles labels accessed from GOT

• "Global3": Global label setting that compiles labels accessed from GOT

In this case, because global labels in each global label setting are accessed in units of blocks, the number of

times of updating label communication data from GOT decreases.

Engineering tool

Global label setting of

In redundant mode, select "Control System/Standby System", "System A/System B", or "Not Specified" to start

communications with a global label name specified.

Global label block

28.7 Label Access Setting from External Device

Troubleshooting