Changes

<blockquote>'''''Editor’s Note:'''''Without being able to describe all aspects of the above-mentioned standards and their implications in whole, I will follow a route on how it works and what is happening from the point of view of a regular consumer of energy services. Pleas keep in mind that the roll-out for this digital infrastructure is still in full swing at the point of this writing (2025). Whenever use cases are used as examples, they refer to electric energy. This should not divert attention from the fact, these communication standards and protocols do apply to all metered products (Sparten) in energy industries (Water, Heat, Gas, Contracting Services…) as well. Also, I do use the words “electricity” and “electric energy” synonymously and electricity or energy cannot be “consumed” – I know that. Finally: I am only beginning to investigate this. I have some professional experience, but it is limited. If I am wrong and/or describing situations inadequately, please share your insight either in this Wiki, Recessim Discord or DM (Discord)</blockquote>

1st Digit = authorizing body (1-3: DVGW; 4-9: BDEW) 2nd to 10th = (9 digits) ID provided by the grid provider / measurement device provider 11th digit = checksum  Example: 012345678901  

1,2 digit = country code 3-9 digit = distribution grid provider 10-14 digit = postcode 15-33 digit = “counting point number” / Zählpunktnummer  Example: DE012345678901234567890 

Most smart meters in Germany are equipped with an bidirectional ifrared-port (actually two ports: one for TX and one for RX) for sending and receiving data. This port will send additional metering information if activated. This includes momentary power import/export to and from the grid and voltage in different phases (L1, L2, L3). Activation is protected by a 4-digit PIN, which is (for data protection reasons) only available from the company owning the meter, or if unconfigured "0000" as a factory default. To activate the sending of additional metering data, the pin has to be entered by using a simple flashlight. Here's a [https://www.youtube.com/watch?v=zqpaXnFCUYQ video] showing, how this is done. PIN protetion can be permanaently deactivated. After successfull activation, the meter can be configured by sending serial communication commands via the ir porteither by OBIS protocol (ASCII or binary (SML) depending on the meter). After configuration the meter will transmit the information requested via the ir-port. Users communicate with these meters via diy-style serial opto-couples via cable link or WiFi. Freelyavailable Freely available [https://www.tasmota.info/ Tasmota] (github) software based soultions do make use of inexpensive microcontrollers (ESP8266 or ESP32) for that purpose. There is a description of the smart meter interface API, running an OBIS-Protocol [https://tasmota.github.io/docs/Smart-Meter-Interface/ here].  '''Example of the OBIS communication protocol:''' <code>09:16:17 MQT: tele/wemos-9/RESULT = {"SerialReceived":"/KFM5KAIFA-METER\r"} 09:16:17 MQT: tele/wemos-9/RESULT = {"SerialReceived":"\r"}</code>  <code>09:16:17 MQT: tele/wemos-9/RESULT = {"SerialReceived":"1-3:0.2.8(42)\r"}</code>  <code>09:16:17 MQT: tele/wemos-9/RESULT = {"SerialReceived":"0-0:1.0.0(200913101618S)\r"}</code>  <code>09:16:17 MQT: tele/wemos-9/RESULT = {"SerialReceived":"0-0:96.1.1(4530303235303030303639363432393136)\r"}</code>  <code>09:16:17 MQT: tele/wemos-9/RESULT = {"SerialReceived":"1-0:1.8.1(005779.835*kWh)\r"} 09:16:17 MQT: tele/wemos-9/RESULT = {"SerialReceived":"1-0:1.8.2(005583.617*kWh)\r"}</code>  <code>09:16:17 MQT: tele/wemos-9/RESULT = {"SerialReceived":"1-0:2.8.1(000000.000*kWh)\r"}</code>  <code>09:16:17 MQT: tele/wemos-9/RESULT = {"SerialReceived":"1-0:2.8.2(000000.000*kWh)\r"}</code>  <code>09:16:17 MQT: tele/wemos-9/RESULT = {"SerialReceived":"0-0:96.14.0(0001)\r"}</code>  <code>09:16:17 MQT: tele/wemos-9/RESULT = {"SerialReceived":"1-0:1.7.0(00.498*kW)\r"}</code>  <code>09:16:17 MQT: tele/wemos-9/RESULT = {"SerialReceived":"1-0:2.7.0(00.000*kW)\r"}</code>  <code>09:16:17 MQT: tele/wemos-9/RESULT = {"SerialReceived":"0-0:96.7.21(00000)\r"}</code>  <code>09:16:17 MQT: tele/wemos-9/RESULT = {"SerialReceived":"0-0:96.7.9(00000)\r"}</code>  <code>09:16:17 MQT: tele/wemos-9/RESULT = {"SerialReceived":"1-0:99.97.0(1)(0-0:96.7.19)(000101000001W)(2147483647*s)\r"}</code>  <code>09:16:17 MQT: tele/wemos-9/RESULT = {"SerialReceived":"1-0:32.32.0(00000)\r"}</code>  <code>09:16:17 MQT: tele/wemos-9/RESULT = {"SerialReceived":"1-0:32.36.0(00000)\r"}</code>  <code>09:16:17 MQT: tele/wemos-9/RESULT = {"SerialReceived":"0-0:96.13.1()\r"}</code>  <code>09:16:17 MQT: tele/wemos-9/RESULT = {"SerialReceived":"0-0:96.13.0()\r"}</code>  <code>09:16:17 MQT: tele/wemos-9/RESULT = {"SerialReceived":"1-0:31.7.0(002*A)\r"}</code>  <code>09:16:17 MQT: tele/wemos-9/RESULT = {"SerialReceived":"1-0:21.7.0(00.496*kW)\r"}</code>  <code>09:16:17 MQT: tele/wemos-9/RESULT = {"SerialReceived":"1-0:22.7.0(00.000*kW)\r"}</code>  <code>09:16:17 MQT: tele/wemos-9/RESULT = {"SerialReceived":"0-1:24.1.0(003)\r"}</code>  <code>09:16:17 MQT: tele/wemos-9/RESULT = {"SerialReceived":"0-1:96.1.0(4730303332353631323736373836373136)\r"}</code>

'''Example of the OBIS ASCII communication protocol:''' <code>09:16:17 MQT: tele/wemos-9/RESULT = {"SerialReceived":"/KFM5KAIFA-METER\r"}</code> <code>09:16:17 MQT: tele/wemos-9/RESULT = {"SerialReceived":"\r"}</code> <code>09:16:17 MQT: tele/wemos-9/RESULT = {"SerialReceived":"1-3:0.2.8(42)\r"}</code> <code>09:16:17 MQT: tele/wemos-9/RESULT = {"SerialReceived":"0-0:1.0.0(200913101618S)\r"}</code> <code>09:16:17 MQT: tele/wemos-9/RESULT = {"SerialReceived":"0-0:96.1.1(4530303235303030303639363432393136)\r"}</code> <code>09:16:17 MQT: tele/wemos-9/RESULT = {"SerialReceived":"1-0:1.8.1(005779.835*kWh)\r"}</code> <code>09:16:17 MQT: tele/wemos-9/RESULT = {"SerialReceived":"1-0:1.8.2(005583.617*kWh)\r"}</code> <code>09:16:17 MQT: tele/wemos-9/RESULT = {"SerialReceived":"1-0:2.8.1(000000.000*kWh)\r"}</code> <code>09:16:17 MQT: tele/wemos-9/RESULT = {"SerialReceived":"1-0:2.8.2(000000.000*kWh)\r"}</code> <code>09:16:17 MQT: tele/wemos-9/RESULT = {"SerialReceived":"0-0:96.14.0(0001)\r"}</code> <code>09:16:17 MQT: tele/wemos-9/RESULT = {"SerialReceived":"1-0:1.7.0(00.498*kW)\r"}</code> <code>09:16:17 MQT: tele/wemos-9/RESULT = {"SerialReceived":"1-0:2.7.0(00.000*kW)\r"}</code> <code>09:16:17 MQT: tele/wemos-9/RESULT = {"SerialReceived":"0-0:96.7.21(00000)\r"}</code> <code>09:16:17 MQT: tele/wemos-9/RESULT = {"SerialReceived":"0-0:96.7.9(00000)\r"}</code> <code>09:16:17 MQT: tele/wemos-9/RESULT = {"SerialReceived":"1-0:99.97.0(1)(0-0:96.7.19)(000101000001W)(2147483647*s)\r"}</code> <code>09:16:17 MQT: tele/wemos-9/RESULT = {"SerialReceived":"1-0:32.32.0(00000)\r"}</code> <code>09:16:17 MQT: tele/wemos-9/RESULT = {"SerialReceived":"1-0:32.36.0(00000)\r"}</code> <code>09:16:17 MQT: tele/wemos-9/RESULT = {"SerialReceived":"0-0:96.13.1()\r"}</code> <code>09:16:17 MQT: tele/wemos-9/RESULT = {"SerialReceived":"0-0:96.13.0()\r"}</code> <code>09:16:17 MQT: tele/wemos-9/RESULT = {"SerialReceived":"1-0:31.7.0(002*A)\r"}</code> <code>09:16:17 MQT: tele/wemos-9/RESULT = {"SerialReceived":"1-0:21.7.0(00.496*kW)\r"}</code> <code>09:16:17 MQT: tele/wemos-9/RESULT = {"SerialReceived":"1-0:22.7.0(00.000*kW)\r"}</code> <code>09:16:17 MQT: tele/wemos-9/RESULT = {"SerialReceived":"0-1:24.1.0(003)\r"}</code> <code>09:16:17 MQT: tele/wemos-9/RESULT = {"SerialReceived":"0-1:96.1.0(4730303332353631323736373836373136)\r"}</code> <code>09:16:17 MQT: tele/wemos-9/RESULT = {"SerialReceived":"0-1:24.2.1(200913100000S)(04139.079*m3)\r"}</code> <code>09:16:17 MQT: tele/wemos-9/RESULT = {"SerialReceived":"!F798\r"}</code>'''Example of the OBIS SML (binary) Protocoll:''' 1b 1b 1b 1b 01 01 01 01 76 05 03 2b 18 0f 62 00 62 00 72 63 01 01 76 01 01 05 01 0e 5d 5b 0b XX XX XX XX XX XX XX XX XX XX 01 01 63 49 00 00 76 05 03 2b 18 10 62 00 62 00 72 63 07 01 77 01 0b XX XX XX XX XX XX XX XX XX XX 07 01 00 62 0a ff ff 72 62 01 65 02 1a 58 7f 7d 77 07 81 81 c7 82 03 ff 01 01 01 01 04 49 53 4b 01 77 07 01 00 00 00 09 ff 01 01 01 01 0b XX XX XX XX XX XX XX XX XX XX 01 77 07 01 00 01 08 00 ff 65 00 01 01 80 01 62 1e 52 ff 59 00 00 00 00 01 c9 0c a7 01 77 07 01 00 01 08 01 ff 01 01 62 1e 52 ff 59 00 00 00 00 01 c9 0c a7 01 77 07 01 00 01 08 02 ff 01 01 62 1e 52 ff 59 00 00 00 00 00 00 00 00 01 77 07 01 00 02 08 00 ff 01 01 62 1e 52 ff 59 00 00 00 00 00 00 00 00 01 77 07 01 00 02 08 01 ff 01 01 62 1e 52 ff 59 00 00 00 00 00 00 00 00 01 77 07 01 00 02 08 02 ff 01 01 62 1e 52 ff 59 00 00 00 00 00 00 00 00 01 77 07 01 00 10 07 00 ff 01 01 62 1b 52 00 55 00 00 00 5b 01 77 07 01 00 24 07 00 ff 01 01 62 1b 52 00 55 00 00 00 17 01 77 07 01 00 38 07 00 ff 01 01 62 1b 52 00 55 00 00 00 2e 01 77 07 01 00 4c 07 00 ff 01 01 62 1b 52 00 55 00 00 00 15 01 77 07 81 81 c7 82 05 ff 01 01 01 01 83 02 XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX 01 01 01 63 54 86 00 76 05 03 2b 18 11 62 00 62 00 72 63 02 01 71 01 63 fa 36 00 1b 1b 1b 1b 1a 00 70 b2(sensitive data blanked out = XX)