Installation User guide
5-9
MLC 226 IP Series • SIS Programming and Control
PRELIMINARY
Command/response table for SIS commands (continued)
Command ASCII (Telnet)
(host to switcher)
URL Encoded (Web)
(host to switcher)
Response
(switcher to host)
Additional description
Volume adjustment (discrete, for volume mode = 0)
Set the overall output volume 
level
14
X*
 V
X*
 V Vol 
X*]
This command sets a specifi c volume level 
for the audio output at either the display 
device or via an optional slaved Extron 
MediaLink (MLS) switcher.
X*
 = volume level (0 to 100). Default 
volume = 25. 
When no MLS is detected at the MLS port, 
the maximum volume level is limited by the 
max. volume range command (
X? 
*47#). 
N
  The MLC responds with an E14 (not valid for this confi guration) error if you attempt to set a discrete volume level while the 
MLC is in increment/decrement volume mode (volume mode 1).
Example:
27V 27V
Vol027
]
Example: set volume to 27.
Increment the volume +V %2BV
Vo l 
X*]
Increase audio output.
Decrement the volume -V %2DV
Vo l 
X*]
Decrease audio output.
View the volume level V V
X*]
Show the output volume.
Volume adjustment (for volume mode = 1)
Increment the volume +V %2BV
Vo l 
X*]
Increase audio output.
N
  The MLC responds with an E14 (not valid for this confi guration) error if you attempt to set a discrete volume level while the 
MLC is in increment/decrement volume mode (volume mode 1).
Decrement the volume -V %2DV
Vo l 
X*]
Decrease audio output.
View the volume level V V
X*]
Show the output volume.
Audio mute
Mute on  1Z 1Z
Amt1
]
Mute all audio outputs. This is not the same 
as selecting input 0.
Mute off  0Z 0Z
Amt0
]
Unmute all audio outputs.
View the audio mute status Z Z
X%]
Show the status of audio mute. 
X%
 = 0 (off) or 1 (on).
Relay functions
Force relay on
X!
*1O
X!
 %2A1 O Rly 
X!
 *1 Turn relay number 
X!
 on. 
X!
 = 1-6, to 
match the corresponding relay number.
Force relay off
X!
*0O
X!
 %2A0 O Rly 
X!
 *0
]
Turn relay number 
X!
 off.
Toggle relay
X!
*2O
X!
%2A2O Rly 
X!
 * 
X%]
 Toggle relay 
X!
 on/off. 
X% 
= 1 (on) or 0 (off).










