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Switcher-initiated (unsolicited) messages
When a local event, such as a front panel operation or error condition, occurs, the
switcher responds by sending a message to the host. The switcher-initiated
messages are listed below.
(C) Copyright 2002, Extron Electronics, SW6 RGBHV {or appropriate model}, Vx.xx
The switcher issues the copyright message when it first powers on. Vx.xx is the
firmware version number.
Inn•All
The switcher issues the Inn message when a front panel input selection operation
occurs. n is the input number.
Reconfig
The switcher initiates the Reconfig message when there is a change in an audio
model's audio gain setting.
Sig•n•n•n•n•n•n
The switcher initiates the Sig message when there is a change in the status of an
input. n = 1 indicates a video signal is present, n = 0 indicates a video signal is not
preset. There are as many ns in the switcher-initiated message as the maximum
number of inputs for the models (2, 4, or 6). For example: Sig•1•1•1•0•1•0
which the input signal is present on inputs 1, 2, 3, and 5 and no signal is present on
inputs 4 and 6.
Error responses
When the switcher receives a valid SIS command, it executes the command and
sends a response to the host device. If the switcher is unable to execute the
command because the command is invalid or it contains invalid parameters, the
switcher returns an error response to the host. The error response codes are:
E01
- Invalid input channel number (out of range)
E06
- Invalid input channel change (autoswitch mode active)
E09
- Invalid function (mode) parameter
E10
- Invalid command
E13
- Invalid value (out of range)
Timeout
Pauses of 10 seconds or longer between command ASCII characters result in a
timeout. The command operation is aborted with no other indication.
Using the command/response table
The command/response table is on the next page. With the exception of the set
audio gain and attenuation commands (G and g) , the SIS commands are not case
sensitive. 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 on the next page is for
use with the command/response table.
SW RGB and YUV A Switchers • Remote Control
, in
4-3
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