Lenze i700 - Manual (Page 31)

Lenze · i700 servo inverter · Reference manual · DMS 1.5 EN · 03/2014 · TD05
31
3 Communication with the controller
3.6 Ethernet over EtherCAT (EoE)
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3.6 Ethernet over EtherCAT (EoE)
From version 01.05 , the i700 servo inverter supports the "Ethernet over EtherCAT (EoE)" protocol.
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.
[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.
EoE
Virtual switch
OS
EoE Endpoint to
Operating Systems
EtherCAT Mailbox
EtherCAT
Sockets
esdcp (Lenze) DHCP Client
TCP/IP Stack
Ethernet Driver
Ethernet over EtherCAT (EoE)
EASY
Starter
Engineering
PC
EASY
Starter
Engineering
PC
Ethernet
EtherCAT EtherCAT EtherCAT
Ethernet Ethernet
EtherCAT EtherCAT
EtherCAT Master
Controller
(e.g. Beckhoff CX1020)
GCI Services
(read/write files)
GCI Services
(read/write parameter)
EtherCAT bus
Ethernet
Switch
Terminals
(e.g. Beckhoff EL6614)
EtherCAT bus EtherCAT bus
Global
Network
(DHCP Server)
i700 servo inverter
Virtual File System Object Dictionary