Anfatec eLockIn 203, Manual

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4 REMOTE CONTROL
– Controlling your eLockIn via network –
4.1 G
ENERAL
A
CCESSING VIA
CGI- I
NTERFACE
Communication between the remote computer and the eLockIn is based on TCP
(Transmission Control Protocol) and http (Hypertext Transfer Protocol) for transferring
HTML files and pictures.
Interaction with the
eLockIn
is mainly done by calling Common Gateway Interface
(CGI) programs, which are executable programs called by the web server when it
receives a request for one of them. CGI files may take parameters and values as
arguments, passed to them as a string appended after a '?' (question mark) and
separated by '&' (ampersand).
/cgi-bin/example.cgi?parameter1=abc&parameter2=123
Note: Items that are residing on the
eLockIn
's web server are only accessible after
successful authentication! Files on the web server will be denoted as follows:
/directory/filename
This means that the file 'filename' can be found in subdirectory 'directory' in the web
server's main directory. In a web browser, this file could be accessed by entering
192.168.1.7/directory/filename
into the address bar. '192.168.1.7' would be your
eLockIn
's IP address.
Available cgi files are:
/cgi-bin/remote.cgi , which accepts key codes and passes them to the
eLockIn
software,
/cgi-bin/refresh.cgi
, which sends an HTML page containing current channel
values
Available data files are:
/screen.jpg
, which is an image of the
eLockIn
's display (see 3.1.2)
a textfile
/data/lia.dat
, which contains the current values of the channels 1...4.
4.1.1 T
ECHNICAL
R
EQUIREMENTS
Both the
eLockIn
and the remote computer must be connected to a network. This
could be a simple crosslink cable between the two devices, a LAN (Local Area Network)
or even the internet.
On start-up, the
eLockIn
will set its IP address to a default value, which can be
changed in the Setup menu. You have to know this IP address to connect to the
eLockIn
.
4.1.2 A
UTHENTICATION
Authentication is required only if the user wants to set parameters on the eLockin.
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