Extron electronic 6400 Series manual Host to Switcher Communications, Command/Response Table

Chapter 4 • Programmer’s Guide

Host to Switcher Communications

The Matrix Video Switcher accepts both Simple Instruction Set and Advanced Instruction Set Commands through the RS-232/RS-422 port. Simple Instruction Set (SIS) commands may consist of one or more characters per command field and do not require any special characters to begin or end the command character sequence. Switcher responses to SIS commands all end with a carriage return and a line feed (CR/LF). An Advanced Instruction Set (AIS) command field begins with an Escape character and ends with a carriage return, line feed is optional (the Switcher Response to an AIS command always ends with a CR/LF).

When the Matrix Video Switcher receives a command (SIS or AIS) and determines that it is valid, it will execute the command and send a response back to the controlling (Host) device. If the switcher is unable to execute the command because it is invalid or contains invalid parameters, it will return an error response to the Host. The error response is coded to help identify the cause of the error. Error code responses are defined on Page 4-8.

When a Matrix Video Switcher local event takes place, such as a Front Panel operation, the switcher responds by sending a message to the Host. These switcher initiated messages are listed on Page 4-8. The switcher does not expect a response from the host, but, for example, the host program may want to request new status.

Command/Response Table

The Command/Response Table begins on the following page. Lower case characters are acceptable in the command field only where indicated. Symbols are used throughout the table to represent variables in the Command/Response fields. Symbol definitions are shown at the beginning of the table as is an ASCII to Hexadecimal (HEX) conversion table. Error Response codes and switcher generated Unsolicited Responses are shown at the end of the table. Command and/or Response examples are shown throughout the table. Name fields are 12 alphanumeric characters 0 - 9, A - Z (upper and lower case) including “+/-:=” and space.

Commands are split into two groups which are identified by page headers. The two groups are “Simple Instruction Set Commands” and “Advanced Instruction Set and Simple Instruction Set Commands”.

Input	Presentation
13	Room

	C
	Input
Video Conference	11
Room

Input	Input	12
	7-9
10
	A
	B

Input

14

Training

Room

D

Media

Room

		Pla
		Vyer
		PlaCR1
		Dyer
		PlayVD2
		VCer3
		DSR
D	La S
evic ser			RE
	eC		D
C	ontr		GR
OM		olle	EE
C	PAQ	r	N
OM	PC		B
COM PAQP		HO	LUE
PAQP C		RIZON
C		VE	TAL
		RTIC	Sync
		ALS
		AU	ync
		DIO

Input

1-6

Figure 4-2.A Host computer controls Matrix 3200/6400 System

Extron • Matrix 3200/6400 Series • User’s Manual 4-2