Omron NX Series User Manual page 167

Precautions for Correct Use
• To specify an I/O memory address for a tag, create a variable with an AT specification of the
I/O memory address on the Sysmac Studio, and then specify the variable with the AT specifi-
cation for the tag.
You need to set memory used for CJ-series Unit to use the I/O memory address. For details
on memory settings used for CJ-series Unit, refer to the NJ/NX-series CPU Unit Software
User's Manual (Cat. No. W501).
• If you enter the following I/O memory addresses for tag names on the Network Configurator,
the tags are directly assigned to the I/O memory addresses in the CPU Unit, and not to the
variables. Always specify variable names for tags.
a) Variable names that contain only single-byte numerals from 0000 to 6143
b) Variable names with the following single-byte letters (uppercase or lowercase) followed
by single-byte numerals
• H (H000 to H511)
• W (W000 to W511)
• D (D00000 to D32767)
• E0_ to E18_ (E0_00000 to E0_32767, to E18_00000 to E18_32767)
You can check the memory address or variable to which a tag is assigned, with icons in the
Edit Tags Dialog Box.
4
Input the size of the tag in bytes in the Size Field.
Specify the tag size to be the same as the data type size of the variable.
To use a BOOL variable, select the Use Bit Data Check Box, and enter 1 in the Size Field.
5
Click the Regist Button to register the tag.
If an I/O memory address is specified as the tag name, another Edit Tag Dialog Box will be
displayed with the next address as the tag name so that you can register the next tag consecu-
tively.
After you register the tags, click the Close Button.
6
Click the Out - Produce Tab, and then click the New Button.
The Edit Tag Dialog Box is displayed. Input output tags in the same way.
In case a major fault occurs in the CPU Unit, use the Fault Action setting of the output (pro-
duce) tag to select whether to clear output data or continue to send data.
The Fault Action setting is not required for input (consume) tag sets.
• Retain output after major fault: Hold (default)
Output data maintains its previous status even after a major fault occurs.
• Clear output at major fault: Clear
Output data is cleared to 0 when a major fault occurs.
NX-series EtherNet/IP Unit User's Manual (W627)
Tag that is directly assigned to an I/O memory address
Tag that is assigned to a variable with a Network Publish attribute
9 Tag Data Link Functions
9
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