Ethernet RJ45

The C6930 has two Gigabit LAN ports (X102, X103). The 100Base-T, 1000Base-T and 2500Base-T Ethernet standards enable the connection of corresponding network components and data rates of 100/1000/2500 Mbit/s. The required speed is selected automatically.

The RJ45 connection technology with twisted-pair cables is used. The maximum length of the cable connection is 100 m.

The controllers are used as follows, based on the device generations:

Controller classification based on device generations

Generation

Controller

Mbit/s

C6930-0060

Intel® i219 for LAN1 and i210 for LAN2

100/1000

C6930-0070

Intel® i219 for LAN1 and i210 for LAN2

100/1000

C6930-0080

Intel® i219 for LAN1 and i226 for LAN2

LAN1 100/1000

LAN2 100/1000/2500

The Ethernet port i210/i226 connected via PCIe is usually suitable for cycle times <= 1 ms and for distributed clock applications with EtherCAT.

The Ethernet port i219 integrated in the chipset is usually suitable for real-time Ethernet applications with cycle times > 1 ms (without distributed clocks).

Ethernet RJ45 1:
Ethernet interfaces pin numbering
Ethernet interface pin assignment

Pin

Signal

Description

1

T2 +

Pair 2

2

T2 -

3

T3 +

Pair 3

4

T1 +

Pair 1

5

T1 -

6

T3 -

Pair 3

7

T4 +

Pair 4

8

T4 -

The LEDs of the LAN interfaces indicate the activity and the data transmission rate (Mbit/s). The LED shown completely green in the figure indicates whether the interface is connected to a network. If this is the case, the LED lights up green. The LED flashes green when data transmission is in progress on the interface.

The green/orange LED shown in the figure indicates the data transmission rate. The device generations differ in terms of the possible speed. The following tables show the LED lighting according to the possible speed.

LED lighting speed 100/1000 Mbit/s

Mbit/s

LED

100

Lights-up orange

1000

Lights up green

LED lighting speed 100/1000/2500 Mbit/s

Mbit/s

LED

100

Off

1000

Lights-up orange

2500

Lights up green

With the device generation C6930-0080, the two interfaces differ in the possible data transmission rate. The speed for LAN1 is 100/1000 Mbit/s and for LAN2 100/1000/2500 Mbit/s.