Networked VGA Grid User
Guide
Control with HTTP commands
wget --http-user=admin --http-passwd=pass123 http://192.30.23.45/admin/channel2/set_
params.cgi?rec_enabled=""
5. To start recording on recorder 2:
wget --http-user=admin --http-passwd=pass123 http://192.30.23.45/admin/channelm2/set_
params.cgi?rec_enabled=on
Global variable HTTP command syntax for custom layouts
Your Networked VGA Grid can create global variables via HTTP for use specifically with custom layout as
responsive text overlay elements. See
Add a text overlay (custom channel)
for more information on adding a
global variable into a custom layout.
Important considerations for global custom layout variables
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Each system variable must have its own unique name
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System variable names and variable values are case sensitive
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Each variable must start with a letter or underscore sign and is followed by any combination of letters,
digits and underscore characters [A-Za-z_0-9]{0,32} to a limit of 32 total characters (note that saving an
empty string to a variable will clear the variable value)
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There is a limit of 12 total unique system variables per Networked VGA Grid system
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System variables can be used in text labels across any number of channels
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System variable commands can be issued at a frequency of 5 per second, and up to 6 variables may be
set in a single command (for example, variables "gpsvar1", "gpsvar2" and "gpsvar3" can be updated in a
single command, five times per second). After issuing a set command, all channels using the specified
variable(s) are updated. The frequency of commands issued is not influenced by the number of
channels on your Networked VGA Grid system.
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System variables are considered volatile data and are erased when your Networked VGA Grid system
reboots
Set variables – syntax and example
A set command saves a value to a variable, where
<address>
is the IP address of the Networked VGA Grid,
name
is the unique name for each variable, and
value
is the text/character content stored in each variable.
You can set multiple variables at the same time by separating each variable with an "&" (as shown within the
square brackets in the syntax below).
To "set" variables, use the following syntax:
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Summary of Contents for Networked VGA Grid
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