Host to switcher communications, Command/response table – Extron Electronics Matrix 6400 Series User Manual
Page 35
Extron • Matrix 3200/6400 Series • User’s Manual
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”.
4-2
Presentation
Room
Video Conference
Room
Training
Room
Media
Room
Ex
tro
n
Ele
ctr
on
ics
C
O
M
PA
Q
P
C
C
O
M
PA
Q
P
C
C
O
M
PA
Q
P
C
P
la
ye
r
2
D
V
D
P
la
ye
r 3
V
C
R
P
la
ye
r 1
V
C
R
La
se
r
D
ev
ic
e C
on
tr
olle
r
D
S
S
H
O
R
IZ
O
N
TA
L S
yn
c
VE
R
TIC
AL
S
yn
c
AU
D
IO
G
R
E
E
N
B
LU
E
R
E
D
A
C
Input
1-6
Input
7-9
Input
10
D
B
Input
11
Input
13
Input
14
12
Figure 4-2.A
Host computer controls Matrix 3200/6400 System