Starting And Stopping Tag Data Links - Omron sysmac NX102-9 Series Owner's Manual

7 Tag Data Link Functions

7-2-12 Starting and Stopping Tag Data Links

Automatically Starting Tag Data Links
Tag data links are automatically started immediately after the data link parameters are downloaded
from the Network Configurator. (They are automatically started after the CPU Unit's power is turned ON
or the Unit is restarted.)
Additional Information
With CPU Units with unit version 1.04 or later, a Tag Data Link Connection Timeout error will
occur if a connection is not established with the target device within 1 minute after the tag data
links are started in operation as the originator device. Reconnection processing is continued
periodically even after this error occurs to automatically recover. If the application environment
allows this error to be ignored, such as when a target device is started later than the originator
device, you can change the event level to the observation level.
Starting and Stopping Tag Data Links for the Entire Network
You can start and stop tag data links for the entire network from the user program or from the Network
Configurator.
Precautions for Correct Use Precautions for Correct Use
Use the same method (i.e., either the user program or the Network Configurator) to both start
and stop tag data links. For example, if you use the _EIP_TDLinkStopCmd (Tag Data Link Com-
munications Stop Switch) system-defined variable stop tag data links, you cannot start them from
the Network Configurator.
 Using Commands in the User Program
You can change the corresponding elements in the following system-defined variables to TRUE in
the user program to start and stop tag data links for individual devices. (Refer to Section 3 System-
defined Variables Related to the Built-in EtherNet/IP Port.)
• NX701 CPU Unit and NX102 CPU Unit
You can individually start and stop tag data links for each built-in EtherNet/IP port.
• Tag data links start/stop operation switch for built-in EtherNet/IP port 1
_EIP1_TDLinkStartCmd (CIP Communication1 Tag Data Link Communications Start Switch)
_EIP1_TDLinkStopCmd (CIP Communication2 Tag Data Link Communications Stop Switch)
• Tag data links start/stop operation switch for built-in EtherNet/IP port 2
_EIP2_TDLinkStartCmd (CIP Communication1 Tag Data Link Communications Start Switch)
_EIP2_TDLinkStopCmd (CIP Communication2 Tag Data Link Communications Stop Switch)
• NX1P2 CPU Unit
• Tag data links start/stop operation switch for built-in EtherNet/IP port 1
_EIP1_TDLinkStartCmd (CIP Communication1 Tag Data Link Communications Start Switch)
_EIP1_TDLinkStopCmd (CIP Communication2 Tag Data Link Communications Stop Switch)
• NJ-series CPU Unit
_EIP_TDLinkStartCmd (Tag Data Link Communications Start Switch)
_EIP_TDLinkStopCmd (Tag Data Link Communications Stop Switch)
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NJ/NX-series CPU Unit Built-in EtherNet/IP Port User's Manual (W506)