User Manual

Query string command types and syntax
As with SSI formatted commands, query strings can use any valid SIS command of either
type (host or remote).
• Host commands instruct the IPL T SFI244, itself, to act or respond.
• Remote commands send data to an external control port on the IPL T SFI244.
The basic format for a query string with a link is as follows:
<a href=”index.html?cmd=x”>linked text</a> where x is the SIS command
to be executed.
<a href="index.html ? cmd= "> </a>
Delimiter Delimiter
SIS command
to be executed by the
IPL T SFI244 (Web
server)
(typed with no spaces)
HTML URL
reference (link)
command
End of link
tag
Indicator that
a command
follows
Link text
(text that appears
on the Web page for
the user to click on)
“?” indicates the start
of the query string.
Text between the quotation marks is typed with no spaces.
Figure 37. Syntax for a URL Containing a Query String
The query string in figure 38 turns off DHCP on the IP Link device.
<a href="index.html ?
Starts
Query String
SIS Command
URL with a Query String using a Host SIS command
*type with no spaces
Tells web server
the an SIS follows
HTML code
for a link
cmd=
SIS command
to be processed
by the IP Link
W0DH|
Closes
Link
</a>
HTML code
for a link
">
Linked Text
DHCP off
Figure 38. Example of a Host Query String Command
<a href="index.html ?
Starts
Query String
SIS Command
URL with a Query String using a Remote SIS command
*type with no spaces
Tells web server
the an SIS follows
HTML code
for a link
cmd=
Closes
Link
</a>
HTML code
for a link
">
Linked Text
Input #1
W
Delimiter
Port
Number
2
Command
RS
Delimiter
1!
Data to be passed to
external device
via a serial port
Figure 39. Example of a Remote Query String Command
In figure 39 above, the data string that follows the pipe (
| ) symbol is sent to the attached
controlled device on serial port #2. This string instructs an attached Extron switcher to
change to input #1.
IPL T SFI244 • Communication and Control 44