OWN OpenWebNet Language Reference
The OpenWebNet protocol was defined in 2000 by Bticino to specify the communication with a Bticino domotic gateway, connected via LAN, RS-232 (serial) or USB.
Basic Syntax Rules
A Bticino gateway receives and sends OPEN messages:
- A message is a simple string, containing the characters asterisk (*), hash (#) and numbers from 0 to 9.
- each message begins with an asterisk (*) and ends with a double hash (##).
- within the message, fields are separated by an asterisk (*).
Example: *field1*field2*field3*...fieldN##
The following table shows the allowed syntax:
| Message Type | Message | Note | 
|---|---|---|
| ACK | *#*1## | Message accepted/understood | 
| NACK | *#*0## | Message not accepted/understood | 
| Standard | *WHO*WHAT*WHERE## | Standard message | 
| Status Request | *#WHO*WHERE## | Request a state (e.g. if a light is ON or OFF) | 
| Dimension Request | *#WHO*WHERE*DIMENSION## | Request a dimension | 
| Dimension Write | *#WHO*WHERE*#DIMENSION*VAL1*VAL2*...*VALn## | Write a dimension | 
The WHO Table
| WHO | Service | 
|---|---|
| 0 | Scenarios | 
| 1 | Lighting | 
| 2 | Automation | 
| 3 | Load Control | 
| 4 | Heating | 
| 5 | Burglar Alarm | 
| 6 | Door Entry System | 
| 7 | Multimedia | 
| 9 | Auxiliary | 
| 13 | Device Communication | 
| 14 | Light+shutters actuators lock | 
| 15 | CEN MH200N | 
| 16 | Sound System | 
| 17 | Scenario Programming | 
| 18 | Energy Management | 
| 24 | Lighting Management | 
| 25 | CEN F454 | 
| 1000 | Diagnostic | 
| 1001 | Automation Diagnostic | 
| 1004 | Heating Diagnostic | 
| 1013 | Device Diagnostic | 

