Inovance AM400 Series

16
EtherCAT frame
length
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Process data Max. 1486 bytes per Ethernet frame
󶏎Wiring
The CPU module provides a CN4 port for EtherCAT bus communication. An ECT
communication network cable that meets the following requirements is a must:
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Figure 6 Requirements on the EtherCAT cable
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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 
7 -- -- Not used
8 -- -- Not used
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Length requirements:
According to FastEthernet technology, when an EtherCAT bus is used, the length
of the cable between the devices must not exceed 100 meters. Exceeding this
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