Specifications

Maestro
tm
Phone [phone] • Fax [phone]
®
Appendicies
Section 8-6
Protocol Structure
The RS-232 serial control protocol structure of the Maestro is a string of
ASCII characters terminated with an ASCII Line Feed (0x0A hexadeci-
mal). Multiple commands can be linked together on one line separated
by a semicolon, but the total command string cannot contain more
than 64 characters (including spaces and the Line Feed terminator).
In the following examples
<lf><lf>
<lf><lf>
<lf> represents the ASCII Line Feed. How
you actually enter that character into your serial control system varies
by manufacturer. Check with their programming information about
direct ASCII character entry.
Command Structure
In the following commands, one or more of the following parameters
may apply:
Parameter Description
? Query the command status.
z Zone Selection. Valid values for this parameter are Z1 for
the main zone and Z2 for the second zone outputs.
x On/Off setting for the command. Valid values are 0 for off/
no and 1for on/yes.
y Value: Some commands will accept a range of inputs (i.e.
Volume or Delay setting)
i Input Source: Sets the command for a specific source
input. Valid inputs for this parameter are: 0=None,
1=Source, 2=Aux, 3=CD, 4=Tuner, 5=DVD, 6=SAT, 7=AV,
8=Multi-channel, 9=Tape, A=VCR, B=Follow Zone 1.
s Speaker: Sets the commands for specific speaker channels.
Valid inputs for this parameter are: 0=Center, 1=Front
Left, 2=Front Right, 3=Surround Left, 4=Surround Right,
5=Back Left, 6=Back Right, 7=Subwoofer, 8=All Channels.
Table 1 Command Parameters
Note: ALL commands are entered in Uppercase. The parameters are shown in lowercase for clarity.