Inovance H5U Series - Page 16

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4.3 EtherCAT Bus Connection
1) EtherCAT Speci󶍾cations
Item Speci󶍾cations
Communication protocol EtherCAT protocol
Service supported CoE (PDO and SDO)
Synchronization mode Distributed clock (DC) used by the servo, with synchronized I/O
Physical layer 100BASE-TX
Baud rate 100 Mbit/s (100Base-TX)
Duplex mode Full duplex
Topology Linear topology
Transmission medium Network cable (see the "Wring" section)
Transmission distance < 100 m between nodes
Number of slave stations 72 at most
EtherCAT frame length 44–1,498 bytes
Process data Max. 1,486 bytes/Ethernet frame
2) Wiring
The PLC can use the CN4 port for EtherCAT bus communication. The following
network cable is required:
● Requirements on the EtherCAT network cable:
1
8
1
8
Network port connector,
8P8C-3 crossover type
Network port connector,
8P8C-3 crossover type
26AWG shielded twisted pair cable, Cat 5e
Figure 7 Preparation of the EtherCAT network cable
● Signal pins
Pin Signal Signal Direction Signal Description
1 TD+ Output Data transmission+
2 TD- Output Data transmission-
3 RD+ Input Data reception+
4 – – Not used
5 – – Not used
6 RD- Input Data reception-
7 – – Not used
8 – – Not used