Extron Electronics Matrix 200 - Manual (Page 91)

Extron • Matrix 200 • User’s Manual
Appendix B • Programming Guide
B-3
Simple Instruction Set
A simple command consists of a single character typed on a keyboard and
preceded by ESC (1B hex). It is not necessary to press the “enter” key. A table
of the simple commands is on the following page.
Related Terms
The following terms may be helpful in understanding information in the tables
and examples that follow.
Line Feed/Carriage Return:
General – On most keyboards, pressing “enter” creates a line feed (lf) and a
carriage return (cr). The screen cursor moves down one line (lf) and to the left
margin (cr). This is done to prevent stringing unrelated information together.
Because these are separate functions, the programmer may send them at any
time and in either sequence (lf/cr or cr/lf). Also, some applications may issue
these commands at the beginning of a sequence, at the end of a sequence, or
both. Each response (as seen on a terminal display) will use it in one form or
another.
Matrix 200 – The Matrix 200 uses lf/cr before and after each response (only in
the Simple Instruction Set) and is symbolized as
(↵)
in examples that follow.
Display, or Display Device:
“Display” refers to the video output device (projector, monitor, etc.)
Host:
Any device capable of talking to the switcher through an RS-232/RS-422 port.
Switcher:
“Switcher” refers to the Matrix 200.
Terminal:
Any device that includes a keyboard and a display. This could be a “dumb”
terminal, a “smart” terminal, a PC operating in “terminal” mode, etc.