Extron electronic MSW 4V SDI rs Serial Communication, cont’d, Using the command/response table

Serial Communication, cont’d

Using the command/response table

The Command/response table for Simple Instruction Set (SIS) commands is shown at right. The symbols used throughout the table represent variables in the command/response fields. Lower and upper case letters are interchangeable, and 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

•

Symbol definitions

] = CR/LF (carriage return with line feed)

•= space

X!	= Input number (1 through 4)
X@	= Input signal status: 0 = no signal detected, 1 = signal detected
X#	= On/off status: 0 = off, 1 = on
X$	= Switch mode: 1 = normal, 2 = auto
X%	= Input number response (1 through 4)

Command/response table for Simple Instruction Set (SIS) commands

Additional Description
Response	(switcher to host)
ASCII Command (host to switcher)

Command

Select input X!. For X!: input 1 through 4.

In X% ]

X! !

Input selection

Each X@response is the signal status of an input, from	input 1 to 4. X@= 0 (no signal) or 1 (signal detected).	Input 1 = signal present; input 2 = no signal present; input 3 = no signal present; input 4 = signal present.	X!signal's status = X@.
Sig • X@ • X@ • X@ • X@ ]		Sig • 1 • 0 • 0 • 1 ]	X@ ]

0 S	0 S	X! S
Input video sensing Request all inputs' status	Example	Request an individual input's	status

1 = on.
=  off;
For X#: 0	status.
Video mute.	Video mute

X# ]

Vmt X# ]

B

X# B

Read mute status

Mute/unmute video

Video mute

1 = normal,		mode.	normal mode
Set to normal or autoswitch mode. For X$: 2 = auto.	For X%: current selected input 1-4.	For X$: switcher is in normal (1) or auto (2) For X#: video mute is off (0) or on (1). Video is selected on input 2 (V2); switcher is in (F1); video mute is off (Vmt0).		View the firmware version.	View the part number.	Upload firmware. Resets unit to factory defaults.
	F•   X$X% • Vmt X# ]				11]
			0Vmt]
			•
FX$ ]	V		F 1	x.xx ] -60481- Go ] Zpx ]
			V
			•
			2
X$ #	I		I	Q	N	EUpload] EZxxx
Mode select Normal/autoswitch mode	General information		Example	Query firmware version	Query part number	Upload firmware System reset (factory default)

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