X20 system modules • X20 hub system • X20HB8815
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X20 system User's Manual 3.10
4.24.3 X20HB8815
4.24.3.1 General information
The POWERLINK TCP/IP gateway X20HB8815 enables the exchange of all types of application data (HMI, diag-
nostics, parameter data, etc.) between a POWERLINK V2 network and a TCP/IP network. It functions like a layer 2
switch, with the exception that cyclic POWERLINK packets are not routed to the ETH port.
With respect to the functionality of layer 2 switches, it should be mentioned that the gateway X20HB8815 uses the
store-and-forward principle. Gateway functionality doesn't need to be configured separately.
When the gateway receives a frame, it saves the MAC address of the sender and the corresponding interface in
the source address table (SAT). If the destination address is found in the SAT, the gateway routes the frame to the
corresponding interface. Frames with a broadcast or multicast address are always routed to all interfaces.
When IP packets are received at the "ETH" port that are larger than the MTU configured for POWERLINK, they
are fragmented, if permitted.
•
"ETH" port: Interface for TCP/IP network
•
"PLK" port: Interface for POWERLINK network
Information:
I/O modules cannot be operated with the X20HB8815.
POWERLINK V1 is not supported.
POWERLINK is a standard protocol for Fast Ethernet with hard real-time properties. The Ethernet POWERLINK
Standardization Group (EPSG) (see
The bus modules expanded to the left allow connection of up to 2 hub expansion modules in addition to the gateway.
This means that a basic device provides up to 2 POWERLINK ports.
•
POWERLINK
•
Up to 2 slots for hub expansion modules
•
3x / 5x POWERLINK hub
Summary of Contents for X20 System
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