Extron Electronics ISM 482 - Manual (Page 43)

ISM 482 Integrated Scaling Matrix Switcher • Programming Guide 37
Host-to-Switcher Instructions
The switcher accepts SIS commands through its RS-232 port and/or its Ethernet port. SIS
commands consist of one or more characters per command field. They do not require
any special characters to begin or end the command character sequence. Each switcher
response to an SIS command ends with a carriage return and a line feed (CR/LF =
] ),
which signals the end of the response character string. A string is one or more characters.
Switcher Error Responses
When the switcher receives an SIS command and determines that it is valid, it performs the
command and sends a response to the host device. If the switcher is unable to perform
the command because the command is invalid or contains invalid parameters, the switcher
returns an error response to the host. The error response codes are:
E01 — Invalid input channel number (too large)
E10 — Invalid command
E11 — Invalid preset number (zero or too large)
E12 — Invalid output number (zero or too large)
E13 — Invalid value (out of range)
Using the Command and Response Table
The command/response table begins on the next page. Except for the gain and attenuation
settings and the filter settings, upper or lower case letters are acceptable in the command
field. The table below shows the hexadecimal equivalent of each ASCII command.
NOTE: With the exception of the audio gain and attenuation ( G and g ) and horizontal
and vertical filtering ( D and d ) commands, the SIS commands are not case sensitive.
ASCII to Hex Conversion Table
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