Data Exchange With Ethernet/Ip - Omron SYSMAC FH Series User Manual

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Data Exchange with EtherNet/IP

Communications with EtherNet/IP
Data is cyclically exchanged between Ethernet devices on the EtherNet/IP network with tag data links
below.
Connection from
Sensor Controller to PLC
Connection from
PLC to Sensor Controller
• Data exchange method
To exchange data, a connection is opened between two EtherNet/IP devices.
One of the nodes requests the connection to open a connection with a remote node.
The node that requests the connection is called the Originator, and the node that receives the re-
quest is called the Target.
• Data exchange memory locations
The memory locations used to exchange data across a connection are specified as tags.
Memory locations or variables can be specified to tags.
These grouped tags are called an output tag set and input tag set respectively.
Additional Information
Message communications are used when communicating with a PLC that does not support tag
data link communications or when using functions, such as character string output, that are not
supported in tag data link communications.
For details of EtherNet/IP message communications, refer to 2-3-19 Communicating with the
Sensor Controller using EtherNet/IP Message Communications on page 2 - 255.
FH/FHV Series Vision System User's manual for Communication Settings (Z342-E1)
2 Methods for Connecting and Communicating with External Devices
Originator
PLC
Input tag set name: A
Tag: D0
Output tag set name: B
Tag: D100
Sensor Controller
Connection
Output tag set name:
Input_101
Tag: Input_101
Connection
Input tag set name:
Output_100
Tag: Output_100
Ethernet (EtherNet/IP)
Target
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