Rockwell Automation 1766-L32xxx MicroLogix 1400 Programmable Controllers Web Server User Manual - Manual (Page 36)

Publication 1766-UM002A-EN-P - November 2008
34 User Provided Pages
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to reference a page on the same controller, specify a URL such
as /user2.htm
•
to reference a page on another processor, specify a URL such as
http://www.xxx.yyy.zzz/user2.htm, where www.xxx.yyy.zzz is
the IP address of the controller
•
you can reference other WWW servers and display images from
other sources without affecting your usage of data table memory
(except for the size of the HTTP reference)
Referencing Data Table Memory - reference data table memory
locations by placing custom tags into your HTML source which specify
the data table location and optional formatting information. Use the
following format for the custom tag:
The items surrounded by {} are sometimes optional. The items
surrounded by [] are always optional.
You must always specify the basic file reference. Depending on which
file is being referenced, file_number or file_element may be defaulted.
If the file_type is I, O or S, the file_number does not need to be
specified, but the file_element must be specified. If the file_type is not
one of the three special files, the file_number must be specified and
the file_element may default to zero (the input, output and status files
have fixed file numbers).
When defining your custom tag, consider the following:
Tag Item Description
#elements If not specified, this defaults to one. If it is less than one, it also
defaults to one. Each element is output using the same format
(whether specified with %format or defaulted).
%format Legal values are %d for decimal and %x for hexadecimal. The
following file types allow the format to be specified
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Input
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Output
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Status
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Integer
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Timer
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Counter
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Control
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Long
Display format
defaults Input and Output file elements are output in decimal format. Status
file elements are output in hexadecimal format with a leading 0x.
Integer file elements are output in decimal format. Complex data
types (Timer, Counter, Control, or other data types) are output as a
table with bits and important words specified.
Fixed display
formats Float files are always output in floating point format (“C”%g
format). ASCII and STring files are always output as a null
terminated text string. Binary files are always output as two binary
bytes.