TM251MESE Specific Considerations

Ethernet Ports

The TM251MESE has two different Ethernet networks. Each has its own unique IP and MAC addresses.

The two Ethernet networks are called Ethernet 1 and Ethernet 2:

  • Ethernet 1 is made of two switched Ethernet ports dedicated to communication between machines or with the control network.

  • Ethernet 2 is made of one Ethernet port dedicated to the device network and supporting industrial Ethernet connections.

Industrial Ethernet Architecture

This figure presents a typical industrial Ethernet architecture:

A

Control network

B

Device network

1

Logic controller

2

Daisy-chained slaves

3

Ethernet switch

4

I/O island (Modbus TCP)

5

Vision sensor (EtherNet/IP)

6

PC and HMI (TCP/UDP)

2, 4, and 5

Industrial Ethernet slave devices (EtherNet/IP / Modbus TCP)

Industrial Ethernet Connections with Modbus TCP IOScanner Architecture

For example, you can:

  • Connect your PC to Ethernet 1.

  • Use a Modbus TCP IOScanner or EtherNet/IP Scanner with the Ethernet 2.

This figure is an example of an industrial Ethernet architecture with the TM251MESE.