Omron CJ1W-EIP21 用户手册

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页码 464
116
Overview of Tag Data Links
Section 6-1
System Configuration Conditions for Setting Tags Using Symbols or I/O Memory 
Addresses
Local tags for tag data links can be set using I/O memory addresses or net-
work symbols. Support for network symbols, however, depends on the model
of CPU Unit, as shown in the following table. 
Communications with the remote node are possible regardless of whether the
remote node tags are set using I/O memory addresses or network symbols. 
Note
Symbols cannot be set for tags with CJ2H-CPU6
@
 and CJ2M-CPU1
@
 CPU
Units. 
6-1-4
Data Link Data Areas 
Tags
A data link between the local I/O memory and a remote I/O memory is called
a tag. A tag can be set using a network symbol name or an I/O memory
address. 
Tag Sets
When a connection is established, from 1 to 8 tags (including PLC 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 thus created by connecting one
tag set to another tag set. A tag set name must be set for each tag set. 
Note
A connection is used to exchange data as a unit within which data concur-
rency is maintained. Thus, data concurrency is maintained for all the data
exchanged for the tags in one data set. 
Example
In the following example, input tags a to g at the originator are a tag set
named SP1_IN and output tags i and ii are a tag set named SP1_OUT). A
connection is set between these two tag sets. 
Connection type
Each connection can be set for 1-to-1 (unicast) or 1-to-N (mul-
ticast) communications. (Default: Multicast)
Packet interval (RPI) 1 to 10,000 ms for CJ2M and 0.5 to 10,000 ms for other CPU 
Units (in 0.5-ms units)
The packet interval can be set separately for each connection.
Item
Specification
Name in hardware list 
of Network 
Configurator 
CPU Unit
EtherNet/IP Unit or 
built-in EtherNet/IP port
Symbol name 
specification
I/O memory 
address 
specification
CJ2B-EIP21
CJ2H-CPU6
@
-EIP
CJ2H-CPU
@@
-EIP
OK
OK
CJ2M-EIP21
CJ2M-CPU3
@
CJ2M-CPU3
@
OK
OK
CJ1W-EIP21(CJ2)
CJ2H-CPU6
@
-EIP
CJ2H-CPU6
@
CJ2M-CPU3
@
CJ2M-CPU1
@
CJ1W-EIP21
OK 
(CJ2H-CPU6
@
-EIP and 
CJ2M-CPU3
@
 only)
(See note.)
OK
CJ1W-EIP21
CJ1 CPU Unit 
CJ1W-EIP21
---
OK
CS1W-EIP21
CS1 CPU Unit 
CS1W-EIP21
---
OK