166 • Application Examples
Process Data Architecture for MODBUS/TCP
WAGO-I/O-SYSTEM 750
Linux Fieldbus Coupler
8 Application Examples
The example programs in this manual serve to demonstrate how the Linux
fieldbus coupler hardware can be accessed, all the programs have been
installed on the coupler and are ready to run. They can be called directly from
the console using the appropriate call parameters.
• leds
Describes how to access the LEDs of the Linux coupler
• kbusdemo
Describes how to access the process image
• mb_tcp
Describes a more complex program which allows to access the internal bus
via a Modbus TCP protocol.
• CGI application
Describes the use of the CGI interface of the BOA web server for the
transmission of dynamic web content
Note
The example programs are a basis for developing your own applications. In
order to keep it clear and simple, we left out error handling for the most part,
however, it should be implemented to use the code.
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