Lenze EMF2192IB - Manual (Page 23)

Installation
Electrical installation
Network topology
5
l
23 EDSMF2192IB EN 3.1
5.2.2 Network topology
An EtherCAT frame is transmitted by a pair of conductors from the master to the slaves. The
frame is forwarded from slave to slave until it has passed through all devices. Finally the
last slave sends the frame back to the master by a second pair of conductors. Thus,
EtherCAT always creates a logic ring topology, irrespective of the topology selected.
Line topology
M
SD SD SD
IN IN OUT IN OUT
E94AYCET006
Fig. 5−2 Line topology
M Master
SD Slave Device
ƒ The devices are interconnected successively.
ƒ For correct operation it is necessary that the Ethernet sockets IN and OUT are
assigned correctly.
Plug the incoming cable into the IN socket and the ongoing cable into the OUT
socket.
ƒ The direction of data transmission is from the master to the slaves.
I
Tip!
The termination of the last node is effected automatically by the slave.
Switch topology
M S
SD SD
M
IN IN
E94AYCET007
Fig. 5−3 Switch topology
M Master
S Switch
SD Slave Device
The wiring can also be carried out in a star structure via an appropriate switch. For this,
observe the additional runtimes.