Extron Electronics SW8_12 VGA Ars User Guide - Manual (Page 26)

3-3 SW8/12 VGA Ars • Control
Error responses
When the switcher receives a valid command, it executes the command and sends
a response to the host device. If the unit is unable to execute the command because
the command contains invalid parameters, it returns an error response to the host.
Error response codes are:
E01 — Invalid input channel number (out of range)
E06 — Invalid input channel change (auto-switch mode active)
E09 — Invalid function (mode) parameter
E10 — Invalid command
E13 — Invalid value (out of range)
Timeout
A pause of 10 seconds or longer between command ASCII characters results in a
timeout. The command operation is aborted with no other indication.
Using the command/response table
The command/response table is on the following pages. Lowercase letters are
allowed in the command field only as indicated. Symbols are used throughout
the table to represent variables in the command/response fields. Command and
response examples are shown throughout the table. The ASCII to HEX conversion
table below is for use with the command/response table.
ASCII to HEX Conversion Table
Space
Figure 3-1 — ASCII-to-HEX conversion table
Symbol definitions
]
= CR/LF (carriage return/line feed)
}
= Carriage return (no line feed)
•
= Space character
X!
= Input number SW8 = 0 through 8
SW12 = 0 through 12
0 = output mute
X@
= Indicates signal presence 0 = signal not present
1 = signal is present
X#
= On/off status 0 = off
1 = on
X$
= Volume value/range 0 - 100
X%
= Switch mode 1 = normal mode
2 = auto switch mode