Ethernet interfaces (X620, X621)

The two Ethernet interfaces are independent of each other and no switch is integrated. The independent Ethernet interfaces can be configured differently. Note that an additional switch is required for a line topology.

Fig.2: Ethernet interface (X620, X621)

Both Ethernet interfaces achieve speeds of 10/100/1000/2500 Mbit/s. The LEDs on the left-hand side of the interfaces indicate the connection status. The upper LED (LINK/ACT) indicates whether the interface is connected to a network. If this is the case, the LED lights up green. The LED flashes when data transmission is in progress on the interface.

The lower LED (SPEED) indicates the connection speed. At a speed of 10/100 Mbit/s, the LED does not light up. At a speed of 1000 Mbit/s, the LED lights up orange. At 2500 Mbit/s the LED lights up green.

With TwinCAT 4024, the module supports speeds of up to 1 Gbit/s. For operation at 2.5 Gbit/s, the driver for the interfaces must be switched from the Beckhoff real-time driver to the Intel® driver. A new driver is integrated from TwinCAT 4026 that enables support of up to 2.5 Gbit/s. This means that you no longer need to switch to the Intel® driver.

Display in the Device Manager

By default, the Ethernet interfaces are identified as follows in the Device Manager:

Fig.3: Designation of Ethernet interfaces in the Device Manager.

Jumbo frames

Standardized Ethernet frames have a size of 1518 bytes. Ethernet frames that are larger than 1518 bytes are referred to as jumbo frames. Jumbo frames are used for transferring large data quantities. Jumbo frames are useful for certain applications, e.g. video cameras.

Prerequisites:

• Check whether the peripherals used support jumbo frames.

Proceed as follows: