OWN OpenWebNet Language Reference

The OpenWebNet protocol was defined in 2000 by Bticino/Legrand to specify the communication with a Bticino home automation gateway, connected via LAN, RS-232 (serial) or USB. Here you'll get a brief overview of the OWN language syntax. To watch live the OWN messages of your Bticino gateway, you should try the Python Monitor in our Code Snippets section.

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Basic Syntax Rules

A Bticino gateway receives and sends so called 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 OWN message 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)
Attribute Request	*#WHO*WHERE*ATTRIBUTE##	Request attribute value
Attribute Write	*#WHO*WHERE*#ATTRIBUTE*VAL1*VAL2*...*VALn##	Write attribute value(s)

Some Examples

*1*0*25##           Turn off light 2.5 on local interface 
*1*1*47#4#01##      Turn on light 4.7 on interface 1 (#4#01)
*1*1*0415##         Turn on light 4.15 on local interface
*1*0*0##            Turn off all lights on local interface
*0*13*19#4#06##     Launch command 13 of Scenariolist 19 (e.g a F420 is addressed by 19) on interface 6
*2*1*91#4#03##      open (1) shutter 9.1 in on interface 3 (#4#03)
*#4*#1*#14*0225*3## Set heating zone 1 manually ON to 22.5°C

Notice: for smaller home automation facilities, the 88 available addresses (11..99, see WHERE table below) of a normal gateway (like F453AV) are sufficient and can be directly addresse via the local interface (##) of the gateway. But if you have more than 88 light points (like me), you might need/have additional interfaces to extend the addressable lights. A message with an address on the local interface ends with a ##. Adresses connected to on one of your extension interfaces must have the prefix "#4#nn, where nn stands for the 2-digit value of the extension interface number. So a message with an address on interface 7 ends like this: "#4#07##.

WHO? WHAT? WHERE?

We know already that a standard message consists of *WHO*WHAT*WHERE##.

• WHO identifies the service, such as scenario, light or automation
• WHAT is the action to be performed, such as light ON/OFF or dimmer, shutter up/down etc.
• WHERE identifies the object, which can be an area, group, an environment, or just a single light or shutter etc. A WHERE field can also come with optional parameters, separated by a hash (#), e.g. *WHERE#PAR1#PAR2#...#PARn

The tables below gives you an idea of WHO, WHAT, and 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
1008	WHO=1008 - ???? Something with Heating Diagnostic ?
1013	Device Diagnostic

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

WHERE	Address
0	General (covers 11..99)
1..9	Zone/room 1 to 9
11..99	Light point 11 to 99
#1..#9	Group 1 to 9