HTTP server functions/web pages
94
FP Web-Server V2.810 EN
12.1.8.2 Comments
The PLC data tag can also be used in XML files for data exchange.
Please find details under "Notes on XML files with PLC data (see p.
114)".
In the text parameters
aa
and
bb
, which specify texts for the internal
flag's statuses, it is also possible to use complex HTML blocks, e.g. to
display graphics.
Please do not use special characters and umlauts in {...} PLC data fields
(and/ or the format parameters aa and bb). The following characters
are strictly forbidden: " _ % \ < > & ' ?
PLC data display fields can also be used in the [VALUE] field of the
[SUBMIT] input fields to indicate an (editable) output value.
Strings to be displayed have a maximum length of 52 characters. The
exception are PLC data input fields, where the maximum length is only
48 characters per string.
The special characters < and > are transcribed as ¼ and ¾ characters
when a string is displayed on an HTML page. Please refer to ASCII
character codes for strings (see p. 115).
The "default" MEWTOCOL address can be modified for the current
browser's request of this page with the calling parameter &A=x .
The "default" communication interface to send the MEWTOCOL telegram
can be modified for the current browser's request of this page with the
calling parameter &I=x. (x=0: RS232 interface, x=2: RS485, x=3:
USB, x=4: Internal data to the FPWEB Script)
