Baumer ATD - Manual (Page 8)

EtherCAT 8/42 Baumer Thalheim GmbH & Co. KG
2011-10-04/rnik Eschwege, Germany
2 Device Operation Basics
The encoder device may be operated with a cable length of maximum 100 m between two bus devices (as-
sumption cable CAT5e or better). Different bus topologies are possible: Line, Tree or Star configurations may
be implemented. A maximum of 65535 devices may be connected to the bus.
Picture 1 Line bus topology example
ECAT devices don’t need any hardware configuration prior connection to the bus e.g. device address.
Input and output connectors are not interchangeable, input connector should be connected towards the
ECAT master:
OUT
POWER
IN
Picture 2 I/O connectors
For the devices network connection a M12 4 poles D coded connector is used; connection schemata for the
two network ports is:
Signal name TxD+ RxD+ TxD- RxD-
M12 Connector pin 1 2 3 4
Table 1 ECAT connector pin out description
Power supply connector is M12 4 poles connector:
Signal name Vdc n.c. GND n.c.
M12 Connector pin 1 2 3 4
Table 2 Power supply connector pinning
The encoder supports the CANopen over EtherCAT (CoE) data transfer protocol, the Service Data Objects
are transferred via Mailbox services.