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Fabian Affolter 2017-09-25 19:19:53 +02:00
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source/_components/sensor.dsmr.markdown
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@ -49,11 +49,20 @@ sensor:
- platform: dsmr
```
Configuration variables:
- **port** string (*Optional*): Serial port to which Smartmeter is connected (default: /dev/ttyUSB0 (connected to USB port)). For remote (i.e. ser2net) connections, use TCP port number to connect to (i.e. 2001).
- **host** string (*Optional*): Host to which Smartmeter is connected (default: '' (connected via serial or USB, see **port**)). For remote connections, use IP address of host to connect to (i.e. 192.168.1.13).
- **dsmr_version** string (*Optional*): Version of DSMR used by meter, choices: 2.2, 4 (default: 2.2).
{% configuration %}
port:
description: Serial port to which Smartmeter is connected (default: /dev/ttyUSB0 (connected to USB port)). For remote (i.e. ser2net) connections, use TCP port number to connect to (i.e. 2001).
required: false
type: string
host:
description: Host to which Smartmeter is connected (default: '' (connected via serial or USB, see **port**)). For remote connections, use IP address of host to connect to (i.e. 192.168.1.13).
required: false
type: string
name:
description: Version of DSMR used by meter, choices: 2.2, 4. Defaults to 2.2.
required: false
type: string
{% endconfiguration %}
Full configuration examples can be found below:
@ -95,6 +104,7 @@ group:
```
Optional configuration example for ser2net:
```sh
# Example /etc/ser2net.conf for proxying USB/serial connections to DSMRv4 smart meters
2001:raw:600:/dev/ttyUSB0:115200 NONE 1STOPBIT 8DATABITS XONXOFF LOCAL -RTSCTS
@ -111,3 +121,14 @@ and after that you need to reboot!
```
$ sudo reboot
```
### {% linkable_title Technical overview %}
DSMR is a standard to which Dutch smartmeters must comply. It specifies that the smartmeter must send out a 'telegram' every 10 seconds over a serial port.
The contents of this telegram differ between version but they generally consist of lines with 'obis' (Object Identification System, a numerical ID for a value) followed with the value and unit.
This module sets up a asynchronous reading loop using the `dsmr_parser` module which waits for a complete telegram, parser it and puts it on an async queue as a dictionary of `obis`/object mapping. The numeric value and unit of each value can be read from the objects attributes. Because the `obis` are know for each DSMR version the Entities for this component are create during bootstrap.
Another loop (DSMR class) is setup which reads the telegram queue, stores/caches the latest telegram and notifies the Entities that the telegram has been updated.