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7-3
7 Tag Data Link Functions
CJ-series EtherNet/IP Units Operation Manual for NJ-series CPU Unit (W495)
7
-1 In
tr
o
duct
ion
to
T
a
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Data L
inks
7
7-1
-2 Dat
a Link Data
Areas
A tag is a unit that is used to exchange data with tag data links. Data is exchanged between the local
network variables and remote network variables specified in the tags or between specified I/O memory
areas.
Precautions for Correct Use
Precautions for Correct Use
To maintain concurrency in the values of network variables that are assigned to tags, you must
set refreshing tasks. Refer to 7-1-7 Concurrency of Tag Data Link Data for details.
When a connection is established, from 1 to 8 tags (including Controller status) is configured as a tag
set. Each tag set represents the data that is linked for a tag data link connection. Tag data links are
therefore created through a connection between one tag set and another tag set. A tag set name must
be set for each tag set.
Data for the tags is exchanged in the order that the tags are registered in the tag sets. Register the tags
in the same order in the input and output tag sets.
Note
A connection is used to exchange data as a unit within which data concurrency is maintained. Thus, data
concurrency is maintained for all the data exchanged for the tags in one data set.
Precautions for Correct Use
Precautions for Correct Use
Data for the tags is exchanged in the order that the tags are registered in the tag sets. Register
the tags in the same order in the input and output tag sets.
7-1-2
Data Link Data Areas
Tags
Tag Sets
Содержание SYSMAC CJ1W-EIP21
Страница 8: ...Manual Structure 6 CJ series EtherNet IP Units Operation Manual for NJ series CPU Unit W495...
Страница 10: ...Sections in this Manual 8 CJ series EtherNet IP Units Operation Manual for NJ series CPU Unit W495...
Страница 20: ...Read and Understand this Manual 18 CJ series EtherNet IP Units Operation Manual for NJ series CPU Unit W495...
Страница 42: ...Revision History 40 CJ series EtherNet IP Units Operation Manual for NJ series CPU Unit W495...
Страница 68: ...1 Introduction 1 26 CJ series EtherNet IP Units Operation Manual for NJ series CPU Unit W495...
Страница 80: ...2 Installing Ethernet Networks 2 12 CJ series EtherNet IP Units Operation Manual for NJ series CPU Unit W495...
Страница 130: ...6 Testing Communications 6 4 CJ series EtherNet IP Units Operation Manual for NJ series CPU Unit W495...
Страница 206: ...7 Tag Data Link Functions 7 76 CJ series EtherNet IP Units Operation Manual for NJ series CPU Unit W495...
Страница 246: ...8 Message Communications 8 40 CJ series EtherNet IP Units Operation Manual for NJ series CPU Unit W495...
Страница 266: ...9 FTP Server 9 20 CJ series EtherNet IP Units Operation Manual for NJ series CPU Unit W495...
Страница 374: ...13 Troubleshooting 13 56 CJ series EtherNet IP Units Operation Manual for NJ series CPU Unit W495...
Страница 431: ...Index 1 CJ series EtherNet IP Units Operation Manual for NJ series CPU Unit W495 I Index...
Страница 436: ...Index 6 CJ series EtherNet IP Units Operation Manual for NJ series CPU Unit W495 Index...
Страница 437: ......