Extron-electronics MSG0808 User Manual download pdf (Page 33)

MSG Matrix Switchers • Remote Control

5-3

Termination resistors should only be turned on when operating in RS-422/

RS-485 mode, and then only for the first and last units on a long serial line.

The default switch settings are all OFF. In half-duplex mode, only turn on one

of the termination resistors, as they are connected together by the cable.

Host-to-MSG Matrix Switcher Communications

All serial commands are applicable to both the MSG0804 and MSG0808,

except where the number of outputs differs between the two switchers. The

MSG Matrix Switchers accept serial control protocol commands through the

RS-232/RS-422/RS-485 port. These commands consist of one or more

characters per command field. They require a beginning delimiter ([) and an

ending delimiter (]).

Addressing commands

In RS-232 mode, there is no need to assign an address to the switcher,

however, if you are using RS-422 or RS-485 mode with several devices

connected in parallel to a single serial port, you will need to assign an

address for each unit.

The factory default for the MSG Matrix Switchers is no address. You must

assign an address between 01 and 98. In addition, 00 is a broadcast address,

and all connected units will perform the action commanded (no responses

will be sent).

Using the command table

The command table is shown on the following pages. Lower case characters

are acceptable in the command field only where indicated. Command and

response examples are shown throughout the command table.

dnammoC noitpircseD

]xxRDDA[

si00sserddA.tinuehtot89ot10morfsserddanasngissA

erutufrofdevresersi99sserddadnasserddatsacdaorba

.stcudorp

89ot10=xxerehW-

]@RDDA[

yrotcafehtsisihT.tinuehtmorfsserddanasevomeR

.gnittestluafad

]?RDDA[

.sserddadengissaylsuoiverparoftinuehtyreuQ

]xxCC[

asi00.tinudesserddaehtotrellortnocehtstcennoC

.stinudehcattallaottcennoclliwdnasserddatsacdaorb

.detcatnocebottinuehtfosserddaehtsixxerehW-

1 2 ... 28 29 30 31 32 33 34 35 36 37 38 ... 53 54

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Extron-electronics MSG0808 User Manual Page 33