OWN OpenWebNet Language Reference

The OpenWebNet protocol was defined in 2000 by Bticino/Legrand 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 Tables of WHO WHAT WHERE

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

WHAT	Adress
	The WHAT table depends on the WHO service. Please click on the appropriate service in WHO table.

WHERE	Location
0	General
1..9	Zone 1 to 9
11..99	Light point 11 to 99
#1..#9	Group 1 to 9