Ethercat Bus Interface - Zmotion EIO1616 Manual

⚫ For the connection of the public end, please connect the "IOGND" port on the IO power
supply to the negative pole of the DC power supply of the external input device. If the
DC power supply of the external device and the expansion module power supply are
in the same power supply system, this connection can also be omitted.

3.4. EtherCAT Bus Interface

EIO1616 bus expansion module has 2 100M EtherCAT communication interfaces,
and they support EtherCAT protocol. EtherCAT 0 is connected to main controller or former
level expansion module, but EtherCAT 1 is connected to drive equipment or next level
expansion module, they can not be mixed. The pin definition is as follows:
→ Specification
Item
Communication protocol
Valid service
Synchronization method
Physical level
Duplex mode
Topology
EIO1616 Bus Expansion Module User Manual V1.5
Specification
EtherCAT protocol
CoE(PDO, SDO), FoE
IO adopts input and output synchronization / DC-
distributed clock
100BASE-TX
Full duplex
linear topology