node-red-contrib-myhome-bticino-v2

Control Bticino / Legrand MyHome™ components from Node-RED : node-red-contrib-myhome-bticino-v2 is a Node-RED nodes pack to interact with Bticino / Legrand MyHome™ devices making use of OpenWebNet protocol through a supported gateway (see gateway info underneath).

1. Available nodes

• MH Light
  • ON / OFF / TOGGLE
  • Dimming : UP / DOWN / percentage based
• MH Shutter
  • OPEN / CLOSE / STOP
• MH Scenario
  • CEN and CEN+ scenario buttons management : Short and Long press (start / extended / release)
• MH Temperature Central Unit
  • MANUAL:xx.x°C / PROGRAM:x / SCENARIO:xx / OFF / ANTIFREEZE / THERMAL_PROTECT
• MH Temperature Zone
  • (MANUAL:)xx.x°C / AUTO / OFF / ANTIFREEZE / THERMAL_PROTECT
• MH Energy
  • Read energy meters power consumption measurements
• MH Monitoring
  • Listen for any message on the bus and sends it as payload
• MH Inject
  • Sends any message provided in payload to bus. e.g.
    • *1*1*16## to turn on light 16
    • *#1*16## to ask for status about light 16, receiving as a response *1*1*16## when is ON or *1*0*16## when is OFF

2. Version history

v2.3.3 (latest available) - 03/2024

• MH Energy
  • Improvement : the provided payload can now specify another scope than the one configured on node which has to be queried. Supported values on 'payload.meterscope' are 'instant', 'day_uptonow', 'day', 'hour', 'month_uptonow', 'month', 'sincebegin'.

The complete version history is available in CHANGELOG.md file included in npm package or using this link to GitHub repository

3. Installation

Note : Using the previous node version node-red-contrib-myhome-bticino ? See more upgrade info/path in revision history file.

• Easy approach when Node-RED is installed If you have Node-RED already installed the recommended install method is to use the editor. To do this, select Manage Pallette from the Node-RED menu (top right), and then select install tab in the pallette. Search for and install this node (node-red-contrib-myhome-bticino-v2).

• Using NPM If you have not yet installed Node-RED then run following command or go to Node-RED Installation Guide.

    npm install -g --unsafe-perm node-red
  

  Next, to install node-red-contrib-myhome-biticino node run the following command in your Node-RED user directory - typically ~/.node-red

    npm install node-red-contrib-myhome-bticino-v2
  

4. Usage

4.1 First touch

In order to easy starting to test the nodes, best way is to import an example provided with installed content (using node-red menu 'Import' and selecting one listed under 'node-red-contrib-myhome-bticino-v2'in the 'examples' tab). Examples are available for :

• MH Energy
• MH Light (simple point)
• MH Light (group of lights)
• MH Shutter
• MH Scenario (CEN / CEN+)
• MH Temperature Central Unit
• MH Temperature Zone
• MH Inject
• MH Monitoring (discover lights)

You can also directly copy this basic flow in Node-RED selecting Import in the node-red menu, pasting the provided JSON (do not forget to change the IP address in the Gateway configuration and of course the light number in switch node) :

[{"id":"aaec927e.81712","type":"myhome-light","z":"6fa4a1d5.ce7708","lightid":"15","isgroup":false,"topic":"light","gateway":"a4e23617.d0c288","name":"My test light (A=1 / PL=5)","skipevents":false,"isstatusrequest":false,"output2_name":"","output2_type":"boolean","x":450,"y":180,"wires":[["d0e9bd53.eb9a2"],[]]},{"id":"d0e9bd53.eb9a2","type":"debug","z":"6fa4a1d5.ce7708","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"false","statusVal":"","statusType":"auto","x":650,"y":140,"wires":[]},{"id":"64655a39.b6822c","type":"inject","z":"6fa4a1d5.ce7708","name":"ON","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"cmd/light","payload":"true","payloadType":"bool","x":190,"y":160,"wires":[["aaec927e.81712"]]},{"id":"ffdb52e3.aa532","type":"inject","z":"6fa4a1d5.ce7708","name":"OFF","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"cmd/light","payload":"false","payloadType":"bool","x":190,"y":200,"wires":[["aaec927e.81712"]]},{"id":"9fa0e5b6.9a17f","type":"myhome-eventsession","z":"6fa4a1d5.ce7708","gateway":"a4e23617.d0c288","name":"Discover number","own_lights":true,"own_shutters":true,"own_temperature":false,"own_energy":false,"own_others":false,"x":480,"y":260,"wires":[["193b7155.0724e7"]]},{"id":"193b7155.0724e7","type":"debug","z":"6fa4a1d5.ce7708","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"false","statusVal":"","statusType":"auto","x":690,"y":260,"wires":[]},{"id":"a4e23617.d0c288","type":"myhome-gateway","name":"F-455","host":"192.168.0.210","port":"20000","pass":"12345","timeout":"600","log_in_lights":false,"log_in_shutters":false,"log_in_temperature":false,"log_in_energy":false,"log_in_others":false,"log_out_cmd":false}]

4.2 SCS BUS addresses

When adding nodes, you have to provide the BUS address (known as 'A/PL' in MyHome). The references used in nodes are to be set as a single value : A=1 PL=5 becomes 15, also be aware that, when A>9 or PL>9, the format becomes 4 digits, e.g. A=11 PL=5 becomes 1105, A=1 PL=15 becomes 0115.

4.3 Tips : How to discover device A/PL

Import the provided example node 'MH Monitoring (discover lights)' and follow info and comments :-)

5. Bticino Gateway & OpenWebNet

BTicino is using a proprietary protocol (SCS) to communicate from/to the devices in MyHome network system. There are a many gateways able to convert SCS protocol to OpenWebNet protocol that is well documented (follow this link for more details) and quite easy to use. Based on previous authors comments and my own experience when testing/extending these nodes, these are the gateways it supports :

Gateway	Authentication (tested)	Lights	Shutters	Scenario	Temperature	Energy
MH201 *	IP, OPEN pwd	OK [1]	OK	?	?	?
MH202	OPEN pwd	OK	OK	OK	OK [3][4]	OK
F455	IP, OPEN pwd, HMAC (SHA-1) pwd [2]	OK	OK	OK	OK [4]	OK [6]
F459	IP, OPEN pwd, HMAC (SHA-2) pwd	OK	OK	OK	OK	OK
myHOMEServer1	HMAC (SHA-2) pwd	OK	OK	OK	OK [5]	OK

*based on Fabio Bui feedback
[1] MH201 gateway does not 'respond' to light status request (on update or in read-only mode), but the response itself is sent on the BUS and can be read/used through another flow if necessary. See more info on GitHub issue 11
[2] F455 gateway closes the monitoring connection after 1 hour of inactivity. The connector will auto-reconnect but it is best to use 'keep alive' enabled every 10-15 minutes to avoid connection drops.
[3] MH202 gateway returns the temperature set-point without taking the local offset into account
[4] MH202 & F455 gateways will only send status of first zone's actuator (asking for all fails)
[5] myHOMEServer1 does not allow switching a zone to manual heating (specifying a manual temperature set point)
[6] F455 returns -very- unstable/awkward results for hourly and daily calls. Nodes caching must be enabled to correct most of them when nodes are running for a while...

6. Contact me

If you have questions, remarks, issues,... please add your input using GitHub for this project (either issues or discussions)