Anybus X-gateway CANopen - PROFIBUS
8
Doc.Id. SCM-1200-080
Anybus X-gateway CANopen - PROFIBUS
Doc.Rev. 1.02
2.3 Functional Overview
Internally, the gateway consists of an intelligent gateway platform, an Anybus CANopen interface
1
and
an Anybus PROFIBUS interface. The CANopen interface and the Anybus PROFIBUS interface are in-
terconnected through the intelligent gateway platform, which basically forwards data from one network
to the other and vice versa as shown below. This design allows almost any other industrial network to
be connected to a CANopen master or a slave on a separate CANopen network.
2.4 Data Exchange
Each of the two network interfaces exchanges data on its network through two buffers. The gateway
forwards the data between these buffers as shown below. Note that this process is separated from the
network data exchange. While the gateway ensures data consistency (where applicable), it does not fea-
ture any built-in mechanisms for synchronisation between the CANopen network and the PROFIBUS
network.
Each buffer holds up to 512 bytes of data, where the first two bytes always are used for control/status
information. The remainder 510 bytes gives the theoretical upper limit for the number of data bytes that
1. When it is started the first time, the Anybus X-gateway is set as slave. This can be changed during configuration, see “CANopen Con-
figuration Example” on page 47. The module will remember its setting when restarted.
Industrial network
CANopen network
Anybus CANopen
master/slave Interface
Anybus network
slave interface
Industrial Network Interface
CANopen Network Interface
Industrial network
CANopen network
Data To
the CANopen
Network
Data From
the CANopen
Network
Data From
the CANopen
Network
Data to
the Canopen
Network
Status Word
Status Word
Control Word
Control Word
