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Http Server Functions/ Web Pages
FP Web-Server V2.11
74
Http Address Function
http://199.199.26.52/plc?yyy Downloads HTML page yyy.MTM including PLC data. The
file format .MTM is equivalent to the .HTM format plus PLC
data. The .MTM file is generated by the Configurator.
http://199.199.26.52/plc?yyy&U=xx With automatic reload/ update after xx seconds. The
maximum refresh rate is reached with the input &U=0.
For rapidly changing PLC data, we recommend using Java
Applets (see page
158), which can handle a much higher
data update/display rate.
http://199.199.26.52/plc?yyy&A=xx All following PLC data displayed (including yyy.MTM) are
addressed to the PLC with the C-Net/MEWTOCOL
Address xx (0..32). 0 is equivalent to the universal address
EE. The default address (if no &A parameter is used) can
be determined in the base configuration setting PLC
MEWTOCOL Address. The &A operator does not affect
the default addressing for input fields.
http://199.199.26.52/plc?yyy&Rxxy=w Before downloading the page yyy, the internal relay with
the address Rxxy is set (w=1) or reset (w=0). (xx=0...999
y=0...F w=0/1)
http://199.199.26.52/plc?yyy&Yxxy=w Before downloading the page yyy, the output with the
address Yxxy is set/ reset. (xx=0...999 y=0...F w=0/1)
http://199.199.26.52/plc?yyy&Y0=1&A=5&Y
0=1
Composed types of commands are also possible!
Comments:
• http://199.199.26.52/' can be omitted for relative hyperlinks in an .HTM (or .MTM).
• Only when the http server is turned on can the modification of PLC data (via &Y and &R
commands) be temporarily turned off. If an error occurs, writing to the PLC may be
prevented. Therefore the functioning of the Ys and Rs is also affected.
• The functions &Y and &R can be limited with [Add. Range].
• The name of the CGI function must be in small letters, i.e.
"http://199.199.26.52/PLC?yyy" will not work.
• The PLC address of the &R and &Y commands cannot be replaced by a variable name,
i.e. "http://199.199.26.52/plc?yyyeR'name'=1" will not work. For further information,
refer to Using Variable Names Instead of Absolute PLC Addresses (see page
82).
• If spaces or Japanese characters are used, an error message pops up before
transmission to the FP Web-Server.
• All file names have to correspond to the DOS 8.3 format, i.e. the name may only have up
to 8 characters and the extension (type) only up to 3 characters after the period.
(FP-WEB2 (see page
15): Long file names without special characters can be used.)
For programming examples in C++ and Java to control PLC relays via the http function, please
refer to the online help under the keyword "Appendix K) Programming Samples: Access to the
FP Web-Server / PLC via TCP".
7.1.5 Configurator Settings Concerning the Http Server
Please refer to the online help for the following descriptions: