Extron Electronics VSC 500_700_700D User Guide - Manual (Page 28)

RS-232 Programming Guide
Host-to-VSC Communications
SIS commands consist of one or more characters per field. No special characters are required
to begin or end a command sequence. When the VSC determines that a command is valid,
it executes the command and sends a response to the host device. All responses from the
VSC to the host end 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.
Video Scan Converter-initiated Messages
When a local event such as a front panel selection or adjustment takes place, the VSC
responds by sending a message to the host. No response is required from the host. The
VSC-initiated messages are listed here (underlined).
(C) Copyright 2002, Extron Electronics, VSC 500, Vx.xx ]
The VSC sends the copyright message when it first powers on. V x.xx is the firmware
version number.
VSC 500/700/700D User Guide • Serial Communication 22