Omron SYSMAC CJ1W-EIP21 - Manual (Page 173)

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Setting Tag Data Links Section 6-2
4. If the tag set’s size is changed in either the originator or target after the
connection was set, the size will not match the other node and a parameter
data mismatch will occur. In this case, if the connection settings have been
changed, be sure to check the connections. (Refer to 6-2-17 Checking
Connections.)
Automatically Setting
Connections Tag set names set for devices can be automatically detected to automatically
set connections between input and output tag sets with the same name (or
the same names excluding specified ellipses). Connections are automatically
set under the following conditions.
Example 1: Automatic Connections with the Same Tag Set Names
The following connections would automatically be set if there is an output tag
set named A_Signal at node A and input tag sets named A_Signal at nodes B
and C.
Output tag set names Except for specified ellipses, the output tag set name
must be the same as the input tag set name.
Ellipses can be set for the beginning or end of tag set
names.
Input tag set names Except for specified ellipses, the input tag set name
must be the same as the output tag set name.
Ellipses can be set for the beginning or end of tag set
names.
Connection types The connection type must be Input Only.
Multicast and single cast connection types can be
specified when executing a connection.
RPI The default setting is used.
Timeouts The default setting is used.
Connection
EtherNet/IP
Output tag set: A_Signal
Node A
Input tag set: A_Signal
Node B
Input tag set: A_Signal
Node C
Connection
Excluded characters: None