
Activate/deactivate the mute lines (0x1F)
Activate/deactivate the mute lines on the designated zone.
Example
Command/response sequence to activate the mute relays:
Command:  | 0x21 0x01 0x1F  | 0x01  | 0x0D  | 
Response: | 0x21 0x01 0x1F | 0x00 | 0x01 0x0D | 
COMMAND:
Byte:  | Description:  | |
St  | 0x21  | 
  | 
Zn  | Zone number  | |
Cc  | 0x1F  | 
  | 
Data1  | 0x00  | – Deactivate mute line  | 
  | 0x01  | – Activate mute line  | 
Dl  | 0x01  | 
  | 
Et  | 0x0D  | |
RESPONSE: | 
  | 
  | 
Byte:  | Description:  | |
St  | 0x21  | 
  | 
Zn  | Zone number  | |
Cc  | 0x1F  | 
  | 
Ac  | Answer code  | |
Dl  | Data length <n>  | |
Data1  | Relay state  | |
Et  | 0x0D  | |
Report Amplifer temperature status (0x27)
Report the temperature status of the various zones amplifiers.
Example
Command/response sequence to request the temperature of zone 1 where temperature is too high:
Command:  | 0x21 0x01 0x27  | 0x01  | 0xF0 0x0D  | 
Response: | 0x21 0x01 0x27 | 0x00 | 0x01 0x01 0x0D | 
Note: As each amplifier powers a pair of zones (1&2, 3&4 , 5&6) the temperature status of zones 1 and 2 is the same value.
COMMAND:
Byte:  | Description:  | |
St  | 0x21  | 
  | 
Zn  | Zone number  | |
Cc  | 0x27  | 
  | 
Dl  | 0x01  | 
  | 
Data  | 0xF0 – Request temperature status  | |
Et  | 0x0D  | |
RESPONSE: | 
  | 
  | 
Byte:  | Description:  | |
St  | 0x21  | 
  | 
Zn  | Zone number  | |
Cc  | 0x27  | 
  | 
Ac  | Answer code  | |
Dl  | 0x01  | 
  | 
P2  | 0x00  | – Temperature OK  | 
  | 0x01  | – Over temperature  | 
Et  | 0x0D  | |
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