Matrix-initiated communications protocol – Extron Electronics Matrix 100 Switcher User Manual

Page 50

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Extron • Matrix 100 • User’s Manual

Appendix A • RS-232 Matrix Programmer’s Guide

Matrix-Initiated Communications Protocol

Sometimes, under abnormal conditions, the Matrix 100 may detect a situation
that must be reported to the Host. For example: Auxiliary power supply has
been activated, memory error, backup battery must be replaced etc. These
Matrix Reports are listed and explained later. They have the same general
command format as the Host-initiated commands, but no response is expected
from the host.

Timing

When Commands are sent to the Matrix 100 switcher, the response is delayed
due to normal processing time. The response time has two components: RS-
232 or RS-422 bus delay and Matrix 100 processing time. Matrix 100 processing
time is variable, depending on the length of the command and the matrix size.
Response time is usually less than 100 msec.

Command List (Host-to-Matrix)

Command

Hex

Page Description

CMD0

30

A-5

request status (requires SCMD)

CMD1

31

A-6

request System ID information (requires SCMD)

CMD2

32

A-7

turn power ON

CMD3

33

A-7

turn power OFF

CMD4

34

A-7

request software version

CMD5

35

A-9

set (tie) single connection

CMD7

37

A-9

set (tie) all connections

CMD8

38

A-10 request status and presets

CMD9

39

A-10 mute all planes

CMD10

3A

A-10 save current as preset #

CMD11

3B

A-10 load preset #

CMD12

3C

A-11 mute selected outputs

CMD13

3D

A-11 request Mute map

CMD25

49

A-12 set RGB delay (after sync, for clean switching)

CMD26

4A

A-12 request RGB delay setting

SCMD = Subcommand, a second byte that further defines the Command.

Reports (Matrix-to-Host)

Command

Hex

Page Description

RPRT0

70

A-13 report status to host

RPRT1

71

A-13 report controlling port

Communication Control

Command

Hex Description

CR

0D

carriage return

EOT

04

end of transmission

STX

02

start of text

ETX

03

end of text

X-On

11

resume transmission

X-Off

13

interrupt transmission

A-4

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