Configuration in the CX20x0 and CX50x0 system

The embedded PCs of the CX20x0 and CX50x0 series offer the unique feature of an integrated I/O interface for E-bus and K-bus with automatic switchover. The EL66xx devices in the TwinCAT system act as a virtual switch, with the EtherCAT system as the "backbone". In the CX20x0 and CX50x0 system, the internal interface connection is not implemented through a network interface, but through an FPGA.

Fig.29: Virtual TwinCAT switch in the CX20x0 and CX50x0 system

Due to the internal connection via FPGA and the automatic E-bus / K-bus detection, with offline configuration the Ethernet port only becomes visible when the configuration is activated. To configure the Ethernet port offline, proceed as follows:

• Due to the automatic E-bus and K-bus switching, any terminal should be connected with the appropriate bus
• The internal PCI™ port is detected during offline configuration and must be selected

Fig.30: Dialog for selection of the PCI™ port

• The customer-specific configuration can be created, and the EL66xx can be inserted in the configuration

Fig.31: Insertion of the EL66xx in the configuration

• The Ethernet port is detected after "Reloading the I/O devices" (F4) and then appears under network connections
• as "Local Area Connection 4"

Fig.32: New Network “Local Area Connection” in the Windows network connections

• The port can now be configured as required. The settings are applied and saved. Even if the port disappears again, the settings are retained for subsequent commissioning.

If the problem persists, i.e. if the Ethernet port of the EL66xx still fails to show up in the network connection, this may be due to the following causes. These should be checked and the listed countermeasures taken.

Requirements