Ethernet Over Ethercat (Eoe); System Architecture - Lenze i700 Reference Manual

3 Communication with the controller
3.6

Ethernet over EtherCAT (EoE)

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
3.6 Ethernet over EtherCAT (EoE)
From version
The "Ethernet over EtherCAT (EoE)" protocol serves to send standard Ethernet telegrams via the
EtherCAT network without the real-time communication of the EtherCAT process data being
affected.
This extension allows for establishing a parameter communication (SDO communication) with the
Servo-Inverters i700 on the EtherCAT bus via a standard Ethernet connection (e.g.from a PC with
»EASY Starter«).
3.6.1

System architecture

The following illustration shows the system architecture for an EtherCAT network with EoE nodes.
This network provides access per PC with »EASY Starter« via two interfaces:
A. Access via an Ethernet-Switchport terminal (e.g. Beckhoff EL6614)
B. Access via control (e.g. Beckhoff CX1020)
For this purpose, the control has to support IP routing and the "EoE Endpoint to Operating
Systems" functionality according to the "ETG.1500 master classes" specification.
OS
Ethernet
Engineering
PC
[3-1] System architecture for an EtherCAT network with EoE nodes
The IP address allocation in the network can both be made statically by the EtherCAT master via
configuration and via a higher-level infrastructure which can be connected to the Ethernet
Switchport terminal.
The PC used for diagnostic purposes can get the IP address via the Ethernet Switchport terminal if
this supports a DHCP server or BOOTP mechanism or it must feature a statically allocated IP itself in
the same subnetwork.
Lenze · i700 servo inverter · reference manual · DMS 3.0 EN · 06/2016 · TD06
01.05, the i700 servo inverter supports the "Ethernet over EtherCAT (EoE)" protocol.
EtherCAT bus
EtherCAT
EtherCAT Master
EoE
Virtual switch
EoE Endpoint to
Operating Systems
Controller
(e.g. Beckhoff CX1020)
EtherCAT EtherCAT
EtherCAT
EtherCAT Mailbox
Ethernet over EtherCAT (EoE)
Ethernet Driver
esdcp (Lenze) DHCP Client
TCP/IP Stack
Sockets
GCI Services GCI Services
(read/write files) (read/write parameter)
Virtual File System Object Dictionary
i700 servo inverter
Network
(DHCP Server)
EtherCAT bus EtherCAT bus
EtherCAT EtherCAT
Ethernet
Switch
Terminals
(e.g. Beckhoff EL6614)
Ethernet Ethernet
Global
Engineering
PC
32