OWN OpenWebNet Language Reference

From piMyHome Project
Jump to: navigation, search

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 the OWN messages of your Bticino gateway, you should try the Python Monitor in our Code Snippets section.



Basic Syntax Rules

A Bticino gateway sends and receives messages.

  • a message begins with an asterisk (*) and is terminated with a double hash (##).
  • each message contains fields separated by an asterisk (*).
  • a field can contain dimensions and values separated by an asterisk (*) and/or a hash (#)

Example: *field1*field2#dim1#value1*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)
Dimension Request *#WHO*WHERE*DIMENSION## Request dimension value
Dimension Write *#WHO*WHERE*#DIMENSION*VAL1*VAL2*...*VALn## Write dimension value(s)

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

  • WHO identifies the service, such as scenario, light or automation. See WHO table below.
  • 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. Check out the WHERE table below.
  • ## terminates a message. Larger facilities might have extension interfaces. Addresses connected to on one of these extension interfaces have the prefix "#4#nn, where nn reflects the 2-digit value of the extension interface number. So a message with an address on interface 7 is terminated with a "#4#07##.

Some Examples

*1*0*25##           Turn off light 2.5 on local interface 
 | | |
 | | +- light address 25
 | +- 0=OFF
 +- WHO=1 lighting

*0*13*19#4#06##     Launch scenario 13 of scenario list 19 on interface 6
 | |  | |
 | |  | +- #4#06 = interface 6
 | |  +- 19 = address of scenario list
 | +- scenario #13 
 +- WHO=0 scenarios

*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
*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

WHERE Table

The WHERE field identifies the object, which can be an area, group, an environment, or just a single light or shutter etc.

WHERE Address Info
0 General The whole system, be careful!
1..9 Environment 1 to 9 Can be a zone or a room
11..99 Light point 1.1 to 9.9 Single addresses
0110..0915 Light point 1.10 to 9.15 Extended addresses on newer gateways
#1..#9 Group 1 to 9 A set of single addresses
  • A WHERE field can also come with optional parameters, separated by a hash (#), e.g. *WHERE#PAR1#PAR2#...#PARn.

WHO Table

The WHO value describes the service. Click the service name in table below to get detailed information:

WHO Service
0 Scenarios
1 Lighting
2 Automation
3 Power Management
4 Heating
5 Burglar Alarm
6 Door Entry System
7 Multimedia
9 Auxiliary
13 Device Communication
14 Light+shutters actuators lock
15 WHO=15 - CEN
16 Sound System
17 Scenario Programming
18 Energy Management
24 Lighting Management
25 WHO=25 - CEN plus
1000 Diagnostic
1001 Automation Diagnostic
1004 Heating Diagnostic
1008 Door Entry System Diagnostic
1013 Device Diagnostic