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Why are there two Ethernet ports on the Com'X 200 / 210 / 510 ?

Published date: 17 June 2020

The Com'X 200, Com'x 210, and Com'X 510 have two Ethernet ports and a user may be unsure how to use each of the ports.

Product Line
Com'X 200 (EBX200)
Com'X 210 (EBX210)
Com'X 510 (EBX510)

Com'X 200/210/510 Ethernet Networking

A user may be confused about which port to use for an application.

The Com'X features 2 Ethernet ports:

The Ethernet ports can be configured in 2 modes:
     1) Switch mode: in this case both Ethernet ports share a common configuration.
     2) Upstream/downstream mode: both Ethernet ports are configured separately.

1) In switch mode, both Ethernet ports have the same settings. Using 2 ports simplifies wiring:
    -  Ethernet 1 can be connected to a switch on a local network.
     - Ethernet 2 can be used to connect a PC for configuration operations or to connect a data collection device locally with an Ethernet port.

2) In upstream/downstream mode, the 2 Ethernet ports have different settings and function independently:
    - Ethernet 1 must be used for data publishing. It can be also configured in DHCP Client mode or static IPv4 address mode.
    - Ethernet 2 must be used for data collection. It can be configured as DHCP client, static IPv4 address, or DHCP server.

Note: The Com'X can also utilize power over Ethernet (PoE). Ethernet 1 port should be used for PoE.  View the Technical Datasheet attatched for more details.

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