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Chapter 6 EIP Service
6-1
Chapter 6 EIP Service
6.1 EtherNet/IP Communication Method
The communicant methods of EtherNet/IP are divided into Implicit Communication Method and Explicit Communication
Method and each method is again divided into client and server function. In XGB EtherNet/IP IF module, Implicit
communication method is provided by periodic client /periodic server and explicit communication method is provided by
aperiodic client/aperiodic server.
The periodic client/server is similar to the high speed link of the existing XGT communication service, which is the service
used when data is transmitted and received periodically. The aperiodic client/server method is the communication method
used when particular events happen. In XGB EtherNet/IP I/F module these two services are incorporated into EIP service
and provided.
6.1.1 EtherNet/IP Terms
1)
Implicit Messaging: Suggestive message, the message where the header information other than data has been
implicated to the minimum (In XGB EtherNet/IP I/F module the message is provided via client /periodic server
communication)
2)
Explicit Messaging: Clear message, including all information that can translate frames besides data
(In XGB EtherNet/IP I/F module the message is provided via aperiodic client communication)
3)
Client: The subject requiring information
4)
Server: The subject that provides information at request
5)
Producer: The entity that create producers, information
6)
Consumer: The entity that receives consumer information and consumes it
7)
Tag: Nameplate , Named Variable
8)
EDS File: The abbreviation for Electric Data Sheets. The file where the information on the device and on the
communication set –up is recorded
9)
RPI: The abbreviation for Requested Packet Interval, meaning the period when Packet will be sent
(In XGB EtherNet/IP I/F module, packet is provided at transmission period)
6.1.2 EDS File
Electrical Description Script (EDS) File is a description on devices and it includes the information about a product type
and connection, as well as Vendor ID. In EtherNet/IP I/F module it is the basic principle to set up using EDS File. To
install EDS Fie, EDS register menu of XG5000 should be set up.