Extron Electronics MLA VC10 Plus Setup Guide - Manual (Page 4)

MLA VC10 Plus • Setup Guide (Continued)
4
Connecting the RS-232 Controller
Connect the RS-232 pins to the control processor. This example
shows the connections to an Extron MLC 104 IP Plus. If you are
using a different control processor, read the appropriate user
guide to be certain you are making the correct connections.
If using an Extron MLC, use the following RS-232 protocol
parameters:
z 9600 bps
z 8 data bits
z 1 stop bit
z no parity
Simple Instruction Set (SIS ™ ) Commands for Volume and Mute
Control
A serial driver is also available on the Extron website ( www.extron.com ) that allows Extron
control processors to issue the commands shown below to the MLA VC10 Plus without
needing to enter them manually. For example, this will allow you to exercise serial control
over the MLA VC10 Plus volume by turning a knob on an MLC.
Using the driver requires the control processor to be configured with the appropriate
Extron configuration software (see the user guide for the control processor and the help
file for the software).
Setting SIS Command Response Comment
Increase volume by 1 step
+V Vol
X!]
NOTE:
X!
is 0 to 100:
volume level steps
(0 = mute) Decrease volume by 1 step
-V Vol X!]
Set volume
Example: set volume to 82
X! V
82V
Vol X!]
Vol082
]
View volume level
V Vol X!]
Mute on
1Z Amt1 ]
NOTE:
X@
is
0 = unmuted,
1 = muted Mute off
0Z Amt0 ]
View mute status
Z Amt
X@]
MLC 104 IP Plus
Serial Port
RS-232 12V
MLS PWR
A B
Rx Tx
GR
OUND
GR
OUND
+12V IN
Extron MLA VC10 Plus
RS-232
Tx Rx G