The TM262• have two different Ethernet networks. Each one gets its own and unique IP and MAC address.
The two Ethernet networks are called Ethernet 1 and Ethernet 2:
Ethernet 1 is a separate 100 Mbit/s Ethernet port and dedicated to the Sercos communication for the TM262M•.
Ethernet 2 is a dual 1000 Mbit/s port Ethernet switch.
For example, you can:
Connect your PC to the Ethernet 1
Use a Modbus TCP I/O scanner with the Ethernet 2.
The Network Variables List (NVL) communication works on the Ethernet 1 port and Ethernet 2 port, only if both the Ethernet 1 port and Ethernet 2 port have a valid IP address and are connected to a device.
In addition, the TM262• allows you to connect your computer to the controller with a USB cable and to access the same services as with an Ethernet connection . See Connecting the Controller to a PC.
The controller supports the following protocols:
IP (Internet Protocol) V4, V6
UDP (User Datagram Protocol)
TCP (Transmission Control Protocol)
ARP (Address Resolution Protocol)
ICMP (Internet Control Messaging Protocol)
IGMP (Internet Group Management Protocol)
The communication libraries can be used in EcoStruxure Machine Expert. Refer to Communication Libraries folder of EcoStruxure Machine Expert online help.
This table shows the maximum number of connections:
|
Connection Type |
Maximum |
|---|---|
|
Modbus Server |
8 connections |
|
Modbus Client |
8 connections |
|
Modbus TCP I/O Scanner |
64 channels |
|
EtherNet/IP Scanner |
64 connections |
|
FTP Server |
8 connections |
|
Web server |
10 concurrent users |
|
Machine Expert Protocol (EcoStruxure Machine Expert software, trace, WebVisualisation, HMI devices) |
8 |
|
OPC UA Server |
4 connections |
|
OPC UA Client |
5 connections |
Each connection based on TCP manages its own set of connections as follows:
When a client tries to open a connection that exceeds the poll size, the controller closes the oldest connection.
If all connections are busy (exchange in progress) when a client tries to open a new one, the new connection is denied.
The server connections stay open as long as the controller stays in operational states (RUNNING, STOPPED, HALT).
The server connections are closed when leaving operational states (RUNNING, STOPPED, HALT), except in case of power outage (because the controller does not have time to close the connections).
Connections can be closed when the originator of the connection requests to close the connection it had previously opened.
With an Ethernet communication, the IEC VAR ACCESS service is supported by the controller. With the IEC VAR ACCESS service, data can be exchanged between the controller and an HMI.
The NetWork variables service is also supported by the controller. With the NetWork variables service, data can be exchanged between controllers.