background image

 

Gallery Court, Hankey Place, London SE1 4BB England  Tel: +44 (0)20 7940 2200  Fax: +44 (0)20 7940 2233  Web: www.cambridge-audio.com 

Azur 840A (V1 & V2) and 840E Serial Control Protocol V1.1 

 
1.1 RS232 

Protocol 

The protocol is accessed via COM1 i.e. the rear panel RS232C port. 
 

1.2 Command 

Format 

 

 

Header 

Command     Command

   Command

Footer 

 

Group 

  

Number 

  

Data 

 

1 to 6 

01 to 18 

XXXX 

CR 

byte num: 

1

1

XX 

 

Notes: 

All data consists of ASCII bytes. 
Settings for RS232 comm port are 9600,N,8,1 with no handshaking. 
CR is carriage return, ASCII value 13 decimal. 
Command Data consists of 10 characters maximum. 
 

1.3 Command 

Groups 

Commands are split into the following groups: 
 

Command 

Description 

  

  

Group 

  

  

Control Commands 

  

  

Setup Commands 

  

  

Replies from Setup Commands 

  

  

Replies from Control Commands and Updates 

  

Error Messages 

  

  

 
 

Reviews: