View source for S0Meter

=S0 Pulse Counter Meter=

S0 ''(S-zero, not the letter 'O')'' pulse meters can be used to measure eletricity/gas/water/counter devices that provide a pulse connector. <br>An example of this are DIN-rail kWh-meters, those are often used for measuring the amount of energy that solarpanels have produced.

Energy meters can be uni-directional (measure only imported energy) or bi-directional (measure both imported and exported energy): the latter is suitable as a main electricity meter when a solar plant on the roof is used.

Several solutions can be used to interface one or more S0 meters to Domoticz.

== S0 Pulse Counter Module (S0PCM-5) ==
'S0 Pulse Counter Module (S0PCM-5)' from: 
http://www.smartmeterdashboard.nl/webshop<br>
This module has 5 counter inputs.<br><br>
You can use for example S0 Energy meters like the [http://wiki.switchautomation.com/w/SBS-DDS-1Y-45 DDS-1Y].<br>
They normally have 1000 to 2000 pulses per kWh. ''(the more the better, more pulses = higher 'resolution')''<br>
But probably every counting device that complies with DIN 43864 / EN IEC 62053-31 standard should work, as these two standards are supported by the S0PCM-5.
<br>

===Setup===
Once you have the Pulse Counter Module (PCM) connected through USB and have Domoticz running, you can add the sensor at 'Setup' > 'Hardware'. Pick 'S0 Meter USB' from the dropdown menu.<br>
Once added, you should see an option button 'Set Mode', where you can specify the type of meter and the pulses per hour.<br>

===Pay attention!===
For further selection & activation in Domoticz, it is required that at least one operational S0-interface is connected to the S0PCM.
Then the S0PCM-application gets input for starting, for the operational S0-interface(s) you will see the active counter(s) of the S0PCM under 'Devices' and counter(s) can be selected for application.
Without an input through an active S0-interface, the counters do not appear.

===Forum topics===
See also these forum topics for interesting background information and a useful script:<br>
http://www.domoticz.com/forum/viewtopic.php?f=14&t=4139 for experiences<br>
http://www.domoticz.com/forum/viewtopic.php?f=23&t=5006#p43815 for a generally applicable lua-script for upload of S0PCM-info to PVOutput.

== Creasol DomBus modules ==
[[Creasol Dombus|DomBus12, DomBus23, DomBus33 and DomBusTH]] are module with at least 2 input ports that can be connected to one or more S0 meters (with pulsed outputs) to measure power/energy, water, gas, ....

The following schema shows how to use a [https://www.creasol.it/CreasolDomBus12 DomBus12 module] to interface a '''DDS238-1 or DDS238-2 unidirectional meter''' (with 1 S0 output) and a '''SDM230 bidirectional meter''' (with 2 S0 outputs). Connection is really simple, and another 6 I/Os are free to connect other meters, alarm sensors, analog inputs, relays, ....

[[File:S0 energy meters to Creasol DomBus modules schema.png|alt=S0 energy / power / gas / water meters to DomBus module schema]]

DomBus modules are reliable low-power devices that can be connected together by a thin 4 wire cable (commonly used for alarm sensors), forming a network of modules using the standard RS485 bus connected to the domotic controller (RaspberryPI, PC or other hardware) by a RS485 to USB adapter. Since RS485 media is used, it's possible to connect modules using more than 100m of cable.

Alternatively, it's possible to connect '''up to 4 DDS238-2 ZN/S (bidirectional Modbus energy meter) to the [https://www.creasol.it/EVSE DomBusEVSE module]''' to monitor both power / energy and also voltage, frequency and power factor. DomBusEVSE is a module designed to charge electric vehicle ('''level-2 EV charging station'''), maybe it's not the best solution for who don't own an electric car.

More information at https://www.creasol.it/power_energy_meter