Lenze EtherCAT control technology - Manual (Page 22)

Control technology | EtherCAT communication manual
The Lenze control system with EtherCAT
Required hardware components
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DMS 3.1 EN 01/2011 TD17
4.2 Required hardware components
4.2.1 The industrial PC - the central component
The industrial PC is the central component in the EtherCAT bus system:
 The industrial PC is the EtherCAT master.
 The industrial PC acts as EtherCAT gateway to be able to access the field devices from
the engineering PC via Ethernet and EtherCAT.
 The devices must be connected in a line. To ensure that the system operates properly,
the physical arrangement of the EtherCAT field devices must comply with the bus
topology created in the »EtherCAT Configurator«.
 Each EtherCAT slave has two EtherCAT ports.
– In contrast to Ethernet, one port is assigned as input, the other one as output.
– Input (IN) and output (OUT) must not be reversed!
 A bus termination at the last slave is not required since the bus system at the last slave
is terminated automatically.