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8 Communication Configurations
8.3.9 Basic Characteristics
■
Interfaces
The EtherCAT cables are connected to the network ports (including IN and OUT) equipped with metal
shield. The electrical characteristics are compliant with IEEE 802.3 and ISO 8877 standards.
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065
Pin
Definition
Description
1
TX+
Data transmitting (+)
2
TX-
Data transmitting (-)
3
RX+
Data receiving (+)
4
NULL
Not connected
5
NULL
Not connected
6
RX-
Data receiving (-)
7
NULL
Not connected
8
NULL
Not connected
■
Topology connection
The EtherCAT features flexible topological structure, as shown in the following figures.
■
Linear connection
8
1
IN
8
1
OUT
8
1
8
1
8
1
8
1
OUT
8
1
Master
IN
OUT
IN
■
Redundancy ring connection
8
1
IN
8
1
OUT
8
1
8
1
8
1
8
1
OUT
8
1
Master
IN
OUT
IN
8
1
■
Communication cable
The Ethernet Category 5 (100BASE-TX) network cable or high-strength shielded network cable is used as
the EtherCAT communication cable. The network cables used for the servo drive must also be shielded
with cable length less than 100 m. The shielded network cable enhances the anti-interference capacity of
the system.
