Integra MZA-4.7 - Manual (Page 16)

16
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.
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 Send ASCII “2A”
Addressing a zone 10 amplifier: Binary 000-01010 or 0A hex Send ASCII “0A”
Addressing all Zone amp & preamplifier: FF hex Send ASCII “FF”
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