Web Access From Application Programs; Web Interface Data Formats - Bosch Rexroth ID 40 Manual

146/176 Web interface
Bosch Rexroth AG, MIT: ID 40, 3 842 530 344/2014-05
PROOF COPy 1 | 20.05.2014 | FOR INTERNAL USE ONLy

10.7 Web access from application programs

The ID 40 system can be controlled and data exchanged with MDTs from a PC-based
application program by using the web interface. The requirements are the same as
those for using a browser (see Chapter 10.2 "Requirements").
• To exchange data, the application program sends command strings in the form
of a web address (URL) as shown in the "Directly retrieving the syslog" example
(see Chapter 10.6.2 "Directly retrieving the syslog"). In the following chapters,
the IP address of the ID 40/SLK is assigned the name id40, as described in
Chapter 10.4.1.3 "Assigning a name to the network address".
• In addition to the IP address of the ID 40/SLK, the URL string contains the
identifier of the read or write command as well as the SLK address ranges from
Chapter 7.7 "Addressing data in the ID 40 system" and the data being written.
• Data read by the ID 40 is returned in XML format in a structured manner.
• The ID 40 web interface only returns data after a request. It is not possible to
transmit data by event.
• The pretransmit function is not supported by the web interface.
10.7.1

Web interface data formats

10.7.1.1 Numerical values
The numerical values in the web address and XML structure are bytes ranging from
0–255, defined as unsigned char.
Other number formats (e.g., larger value ranges) can be used in the application, but
have to be implemented into an array of bytes when generating the URL for a write
command.
See Chapter 10.5.1.2 "Syntax when entering values" for supported number systems.