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"Online-Schema" (online scheme)
The bootloader offers online visualisation that provides a graphical representation of the
current state of the system when viewed with a browser over the LAN or the Internet.
This online scheme consists of a graphic file (e.g. "Hydraulikschaltplan" (hydraulic schematic))
and the associated HTML file defining the parameters to be displayed.
The files (.gif and .html) can be stored in the Bootloader using the
Memory Manager
program
(see chapter "Transfer of bootloader data").
Creating a graphic for the online scheme
The graphic can be created using any desired graphics or drawing program, whereby the
following points should be observed:
1. The graphic must be provided to the BL-NET in .gif format.
2. The file must not exceed the maximum size of 196 kilobytes! To reduce the loading
time when displaying the online scheme, the graphic file should be kept as small as
possible.
Creating the HTML file
A HTML file containing all information defining the appearance of the page is required for
displaying the online scheme.
The HTML file can be easily created using the
TAPPS
program.
TAPPS
creates the required
HTML file based on graphical positioning and assignment of the values to be displayed. The
exact procedure is described in the
TAPPS
operating manual.
The HTML file must not exceed the maximum size of 196 kilobytes and should be kept as
small as possible to reduce the loading time!
Definition of display values
The syntax for defining a displayed value is as follows:
$
d1
e0
$
… Identifier for the definition of a displayed value
d1
… Data source of the displayed value
e0
… The parameter whose current value is to be displayed
The definition of a displayed value always begins with the “
$
“ character, followed by the
definition of the
data source
and the
parameter
whose current value is to be displayed.
The definitions are replaced with corresponding current measurements when BL-NET dis-
plays the online scheme.
If no measurements are available, "NO-DL" is displayed in the online scheme. An invalid
definition causes "ERROR" to be displayed.
Data source:
d1
… Data line 1
d2
… Data line 2
n1
… BL-NET CAN network inputs
