Coupler masters Profibus communications
A
Westermo Data Communications product story
Edited by the Engineeringtalk editorial team
Sep 7, 2004
A new fieldbus coupler with incorporated Profibus DP master will enable remote Profibus networks to be connected to a central Profibus network without the need to install an additional PLC master.
A new fieldbus coupler with incorporated Profibus DP master will enable remote Profibus networks to be connected to a central Profibus network via a range of comms without the need to install an additional PLC master.
The FD-20 is designed to provide a method of transferring Profibus I/O data over serial data links without the use of special drivers or PLC cards.
The coupler is aimed at applications where there is a need to control a small number of Profibus slaves at a remote site and data from these must be transferred back to the main Profibus network.
The FD-20 contains a built in Profibus DP Master that can control a network of Profibus DP slaves connected to its fieldbus port.
The FD-20 is able to transfer Profibus DP data over leased line, dial up modems, Ethernet or radio systems.
Using a mix of FD-20 couplers and Westermo FD-10s (fieldbus coupler with Profibus DP Slave), a range of applications can be achieved.
Point-to-point transfer of defined Profibus I/O data can be made using a FD-10P and a FD-20.
The transfer of Profibus I/O data from multiple remote Profibus networks requires a single Westermo FD-10 to act as the serial master and two or more connected FD-20s to control data exchange within the remote networks.
In addition using the Westermo ED-10 UDP coupler the remote Profibus network data can be transferred continuously over Ethernet making the data available anywhere in the world.
The FD-20 is fully compatible with the Profibus DP standard (EN50170) and can facilitate data transfer of up to 65 DP I/O words per cycle.
The unit can be configured within the limits set by the serial datarate.
It is easily configured with FD-Tool, a Windows-based software tool.
The FD-20 also has RS232 and RS422/485 outputs.
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