Integra MZA-4.7 instruction manual RS232 Protocol, Command, Zone

RS232 Protocol

The RS232 serial port provides data acquisition and control of Integra networks by a home automation system, or PC. The interconnecting cable must be straight: 9 pin ‘D’ connectors.

Baud Rate = 9600, Characters are all ASCII.

Command Structure: <command><zone><data>line feed.

Command

Command	Description
01	Standby
02	Mute
03	Source Selection
04	Volume
05	Bass
06	Treble
07	Balance
09	Send All parameters
0B	Cause key press on Keypad
0C	Amplifier features
0D	Maximum Volume Limit
0F	Link Zone
11	Volume Up
12	Volume Down
1C	Zone Name
1D	Preamplifier Volume Mode
1E	Preset Selection / status
26	Volume BCD format

Zone

Integra amplifiers and keypads are encoded with up to 32 zones

The zone byte is used for checking if the command is applicable to the device receiving the command and if so, for optionally selecting a “sub-device”, e.g. a bank or part of a device. All Zones are addressed using FF.

–The lower 5 bits of the zone byte represent the zone 0 - 31 selection, i.e:

•00000 bin = 00 (hex) = zone 0

•00001 bin = 01 (hex) = zone 1

•01010 bin = 0A (hex) = zone 10

•11111 bin = 1F (hex) = zone 31

–The upper 3 bits represent the sub-device. The sub-device codes for the MZA-4.7 are:

•	standard amplifier	= 000
•	page preset amplifier	= 001
•	standard preamplifier	= 010
•	page preset preamplifier	= 011

Examples: Addressing a zone 10 preamplifier: Binary 010-01010 or 2A hex Addressing a zone 10 amplifier: Binary 000-01010 or 0A hex Addressing all Zone amp & preamplifier: FF hex

Send ASCII “2A” Send ASCII “0A” Send ASCII “FF”

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