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some updates, still kind of rough

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Martin Grill 3 years ago
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  1. 151
      doc/hoymiles-format-description.txt

151
doc/hoymiles-format-description.txt
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@ -1,11 +1,11 @@
Goal of this Document About this Document
===================== ===================
This description aims to document the data format that Hoymiles This description aims to document the data format that Hoymiles
micro inverters use to communicate their current operating state. micro inverters use to communicate their current operating state.
The original Hoymiles setup requires connectivity to "the cloud", The original Hoymiles setup requires connectivity to "the cloud",
see [this chapter](#system-description). see [this section below](#system-description).
With the information documented here, it is possible to interact with With the information documented here, it is possible to interact with
a set of Hoymiles micro inverters in a purely "offline" way, i.e. a set of Hoymiles micro inverters in a purely "offline" way, i.e.
@ -13,11 +13,11 @@ without requiring internet access or any connectivity to a "cloud".
The only required hardware is a Nordic "NRF24L01+" wireless module. The only required hardware is a Nordic "NRF24L01+" wireless module.
The `ahoy` project at [ahoy] collects software for various platforms, The `ahoy` project at [5] collects software for various platforms,
including Aduino and RaspberryPi. including Aduino and RaspberryPi.
> Note: Some of the sections in this document are (still) in German. Translation > Note: Some of the sections in this document are (still) in German. Translations
> will be provided if and when necessary. > may be provided if and when necessary.
Origin, Contributors Origin, Contributors
@ -44,7 +44,7 @@ Here's a list of some of the early contributors:
- Thomas B. (tbnobody): protocol analysis, logging - Thomas B. (tbnobody): protocol analysis, logging
- Arnaldo G. (arnaldo_g): data capturing - Arnaldo G. (arnaldo_g): data capturing
- Oliver F (of22): protocol analysis, logging - Oliver F (of22): protocol analysis, logging
- Martin G. (petersilie): protocol analysis, logging - Martin G. (petersilie): protocol analysis, logging, RaspberryPi
@ -56,7 +56,8 @@ Ein Setup wie von Hoymiles vorgesehen, sieht wie folgt aus:
- Eine "DTU" kommuniziert mit vielen Wechselrichtern. - Eine "DTU" kommuniziert mit vielen Wechselrichtern.
- Die Kommunikation geht immer von der DTU aus: - Die Kommunikation geht immer von der DTU aus:
DTU stellt Anfrage und erwartet eine Antwort vom WR. DTU stellt Anfrage und erwartet eine Antwort vom WR.
- Dafür muss die DTU die Adressen aller WR kennen. - Dafür muss die DTU die Adressen (=Seriennummern) aller WR kennen.
- Diese werden der DTU im Rahmen eines Einrichtungsprozesses beigebracht.
``` ```
Nordic Nordic
@ -67,20 +68,20 @@ Ein Setup wie von Hoymiles vorgesehen, sieht wie folgt aus:
+-------+ +-----------+ +-------+ +-----------+
| DTU | | MI-600 | | DTU | | MI-600 |
+-------+ +-----------+-+ +-------+ +-----------+-+
| MI-600 | | MI-1500 |
+-----------+-+ +-----------+-+
| MI-1500 | | MI-... |
+-----------+ +-----------+
: :
: :
ABBILDUNG 1: Systemübersicht ABBILDUNG 1: Systemübersicht
``` ```
``` ```
Nordic Nordic
WLAN "Enh. Shockburst" WLAN "Enh. Shockburst"
2.4 GHz 2.4 GHz
\|/ \|/ \|/ \|/
| | | |
+---------+ +-----------+ +---------+ +-----------+
@ -97,9 +98,9 @@ Ein Setup wie von Hoymiles vorgesehen, sieht wie folgt aus:
``` ```
Nordic Nordic
"Enh. Shockburst" "Enh. Shockburst"
NRF24LE1E 2.4 GHz NRF24LE1E 2.4 GHz
+------------------+ \|/ +------------------+ \|/
+----------+ | | | | +----------+ | | | |
| GD32F303 | <----->| µC | NRF24L01+ |-------+ | GD32F303 | <----->| µC | NRF24L01+ |-------+
@ -114,7 +115,7 @@ Ein Setup wie von Hoymiles vorgesehen, sieht wie folgt aus:
Adressierung Adressierung
============ ============
Die Seriennummern der DTU und der WR werden wie folgt in Adressen für die Die Seriennummern der DTU und der WR werden wie folgt als Adressen für die
Kommunikation verwendet: Kommunikation verwendet:
**Interne Kommunikation**: Die meisten Datenpakete enthalten Quell- und **Interne Kommunikation**: Die meisten Datenpakete enthalten Quell- und
@ -129,7 +130,7 @@ Innerhalb der Pakete auf (C) wird daraus die 4-Byte-Adresse
der letzen 8 Dezimalziffern. der letzen 8 Dezimalziffern.
**NRF24 addressing scheme**: Over the air, the inverters communicate using **NRF24 addressing scheme**: Over the air, the inverters communicate using
the Nordic "Enhanced Shockburst" [3] Protocol configured for the [Nordic "Enhanced Shockburst" Protocol][3] configured for
5-byte addresses. 5-byte addresses.
The inverter serial number is converted into a "Shockburst" address The inverter serial number is converted into a "Shockburst" address
@ -147,9 +148,10 @@ In this example, the resulting "Shockburst" address is: 0x3288817201.
**Additional example**, this time for inverter with serial number 99973104619: **Additional example**, this time for inverter with serial number 99973104619:
The datasheet specifies the over-the-air packet format: "Most Significant Byte The datasheet specifies the over-the-air packet format: "Most Significant Byte
(MSB) to the left" (cf figure 11) (MSB) to the left" (cf [datasheet figure 11][3])
Address := Byte_4, Byte_3, Byte_2, Byte_1, Byte_0 ("LSByte must be unique") Address := Byte_4, Byte_3, Byte_2, Byte_1, Byte_0
("LSByte must be unique")
so 0x1946107301 results in so 0x1946107301 results in
@ -201,12 +203,12 @@ and some translation/mangling/processing happens inside the NRF24LE1E, in partic
- recalculation of CRCs - recalculation of CRCs
These packets (which are all framed in 0x7e...0x7f bytes) are described in section These packets (which are all framed in 0x7e...0x7f bytes) are described in section
"encapsulated packets" below. [Encapsulated Packets](#encapsulated-packets) below.
More recent efforts focus mainly on the actual "Enhanced Shockburst" packets More recent efforts focus mainly on the actual "Enhanced Shockburst" packets
that are transmitted over the air. These packets are described in section that are transmitted over the air. These packets are described in section
"Enhanced Shockburst Payloads", and the information contained in this section is [Enhanced Shockburst Payloads](#Enhanced-Shockburst-Payloads), and the
more up to date. information contained in this section is more up to date.
@ -217,17 +219,19 @@ Encapsulated Packets
These are packets as observed on Link (C) in figure (3). These are packets as observed on Link (C) in figure (3).
Nachricht: DTU an WR: "Init" (?) Nachricht: DTU an WR: "Init" (?)
```
---------------------------------------------------------------------------------------------------------------------------------------------- ----------------------------------------------------------------------------------------------------------------------------------------------
7E 07 00 00 00 00 00 00 00 00 00 07 7F 7E 07 00 00 00 00 00 00 00 00 00 07 7F
^^ ^^ ^^^^^^^^^^^ ^^^^^^^^^^^ ^^ ^^ ^^ ^^ ^^^^^^^^^^^ ^^^^^^^^^^^ ^^ ^^
Bedeutung SOF MID WR ser# WR ser# ? CRC8 EOF Bedeutung SOF MID WR ser# WR ser# ? CRC8 EOF
```
? ?
Nachricht: DTU an WR: "Init 2" (?) Nachricht: DTU an WR: "Init 2" (?)
```
---------------------------------------------------------------------------------------------------------------------------------------------- ----------------------------------------------------------------------------------------------------------------------------------------------
7E 07 72 81 88 32 72 81 88 32 00 07 7F 7E 07 72 81 88 32 72 81 88 32 00 07 7F
@ -235,10 +239,12 @@ Nachricht: DTU an WR: "Init 2" (?)
Bedeutung SOF MID DTU ser# DTU ser# ? CRC8 EOF Bedeutung SOF MID DTU ser# DTU ser# ? CRC8 EOF
Einheit BCD (letzte 8) BCD (letzte 8) ? ? Einheit BCD (letzte 8) BCD (letzte 8) ? ?
Beispiel 72818832 72818832 ? Beispiel 72818832 72818832 ?
```
Nachricht 0x80: DTU an WR: "Zeit setzen" (?) Nachricht 0x80: DTU an WR: "Zeit setzen" (?)
```
---------------------------------------------------------------------------------------------------------------------------------------------- ----------------------------------------------------------------------------------------------------------------------------------------------
|<-------------CRC16 'modbus' für CRC_M----------------->| |<-------------CRC16 'modbus' für CRC_M----------------->|
7E 15 72 22 02 00 72 22 02 00 80 0B 00 62 09 04 9b 00 00 00 00 00 00 00 00 F2 68 F0 7F 7E 15 72 22 02 00 72 22 02 00 80 0B 00 62 09 04 9b 00 00 00 00 00 00 00 00 F2 68 F0 7F
@ -246,10 +252,12 @@ Nachricht 0x80: DTU an WR: "Zeit setzen" (?)
Bedeutung SOF MID WR ser# WR ser# CMD ? TIME (UTC) CRC_M CRC8 EOF Bedeutung SOF MID WR ser# WR ser# CMD ? TIME (UTC) CRC_M CRC8 EOF
Einheit BCD (letzte 8) BCD (letzte 8) ? [s] HI LO Einheit BCD (letzte 8) BCD (letzte 8) ? [s] HI LO
Beispiel 72220200 72220200 ? 2022-02-13 Beispiel 72220200 72220200 ? 2022-02-13
```
13:16:11 13:16:11
Nachricht 0x81: DTU an WR: "Anfrage DC-Daten" (?) Nachricht 0x81: DTU an WR: "Anfrage DC-Daten" (?)
```
---------------------------------------------------------------------------------------------------------------------------------------------- ----------------------------------------------------------------------------------------------------------------------------------------------
GD->NRF 7E 15 70 51 43 68 70 51 43 68 81 xx 7F ...... (NOCH NICHT VERIFIZIERT / GESEHEN) GD->NRF 7E 15 70 51 43 68 70 51 43 68 81 xx 7F ...... (NOCH NICHT VERIFIZIERT / GESEHEN)
@ -261,9 +269,11 @@ GD->NRF 7E 15 70 51 43 68 70 51 43 68 81 xx 7F ..
on-air 15 70 51 43 68 70 53 54 53 81 BA on-air 15 70 51 43 68 70 53 54 53 81 BA
(payload) ^^^^^^^^^^^ ^^^^^^^^^^^ (payload) ^^^^^^^^^^^ ^^^^^^^^^^^
WR ser # DTU ser # WR ser # DTU ser #
```
Nachricht 0x82: DTU an WR: "Anfrage AC-Daten" (?) Nachricht 0x82: DTU an WR: "Anfrage AC-Daten" (?)
```
---------------------------------------------------------------------------------------------------------------------------------------------- ----------------------------------------------------------------------------------------------------------------------------------------------
GD->NRF 7E 15 70 51 43 68 70 51 43 68 82 xx 7F ...... (NOCH NICHT VERIFIZIERT / GESEHEN) GD->NRF 7E 15 70 51 43 68 70 51 43 68 82 xx 7F ...... (NOCH NICHT VERIFIZIERT / GESEHEN)
@ -275,9 +285,11 @@ GD->NRF 7E 15 70 51 43 68 70 51 43 68 82 xx 7F ..
on-air 15 70 51 43 68 70 53 54 53 82 B9 on-air 15 70 51 43 68 70 53 54 53 82 B9
(payload) ^^^^^^^^^^^ ^^^^^^^^^^^ (payload) ^^^^^^^^^^^ ^^^^^^^^^^^
WR ser # DTU ser # WR ser # DTU ser #
```
Nachricht 0x83: DTU an WR: "Anfrage DC-Daten" (?) Nachricht 0x83: DTU an WR: "Anfrage DC-Daten" (?)
```
---------------------------------------------------------------------------------------------------------------------------------------------- ----------------------------------------------------------------------------------------------------------------------------------------------
GD->NRF 7E 15 70 51 43 68 70 51 43 68 83 xx 7F ...... (NOCH NICHT VERIFIZIERT / GESEHEN) GD->NRF 7E 15 70 51 43 68 70 51 43 68 83 xx 7F ...... (NOCH NICHT VERIFIZIERT / GESEHEN)
@ -289,9 +301,11 @@ GD->NRF 7E 15 70 51 43 68 70 51 43 68 83 xx 7F ..
on-air 15 70 51 43 68 70 53 54 53 83 B8 on-air 15 70 51 43 68 70 53 54 53 83 B8
(payload) ^^^^^^^^^^^ ^^^^^^^^^^^ (payload) ^^^^^^^^^^^ ^^^^^^^^^^^
WR ser # DTU ser # WR ser # DTU ser #
```
Nachricht 0x85: DTU an WR: "???" (?) Nachricht 0x85: DTU an WR: "???" (?)
```
---------------------------------------------------------------------------------------------------------------------------------------------- ----------------------------------------------------------------------------------------------------------------------------------------------
GD->NRF 7E 15 70 51 43 68 70 51 43 68 85 xx 7F ...... (NOCH NICHT VERIFIZIERT / GESEHEN) GD->NRF 7E 15 70 51 43 68 70 51 43 68 85 xx 7F ...... (NOCH NICHT VERIFIZIERT / GESEHEN)
@ -303,9 +317,11 @@ GD->NRF 7E 15 70 51 43 68 70 51 43 68 85 xx 7F ..
on-air 15 70 51 43 68 70 53 54 53 85 BE on-air 15 70 51 43 68 70 53 54 53 85 BE
(payload) ^^^^^^^^^^^ ^^^^^^^^^^^ (payload) ^^^^^^^^^^^ ^^^^^^^^^^^
WR ser # DTU ser # WR ser # DTU ser #
```
Nachricht 0xFF: DTU an WR: "???" (?) Nachricht 0xFF: DTU an WR: "???" (?)
```
---------------------------------------------------------------------------------------------------------------------------------------------- ----------------------------------------------------------------------------------------------------------------------------------------------
GD->NRF 7E 15 70 51 43 68 70 51 43 68 FF xx 7F ...... (NOCH NICHT VERIFIZIERT / GESEHEN) GD->NRF 7E 15 70 51 43 68 70 51 43 68 FF xx 7F ...... (NOCH NICHT VERIFIZIERT / GESEHEN)
@ -317,9 +333,11 @@ GD->NRF 7E 15 70 51 43 68 70 51 43 68 FF xx 7F ..
on-air 15 70 51 43 68 70 53 54 53 FF C4 on-air 15 70 51 43 68 70 53 54 53 FF C4
(payload) ^^^^^^^^^^^ ^^^^^^^^^^^ (payload) ^^^^^^^^^^^ ^^^^^^^^^^^
WR ser # DTU ser # WR ser # DTU ser #
```
Nachricht 0x01: WR an DTU: "Aktuelle DC Daten" (?) Nachricht 0x01: WR an DTU: "Aktuelle DC Daten" (?)
```
---------------------------------------------------------------------------------------------------------------------------------------------- ----------------------------------------------------------------------------------------------------------------------------------------------
7E 95 72 22 02 00 72 22 02 00 01 00 01 01 4c 03 bd 0c 46 00 b5 00 03 00 05 00 00 BD 7F 7E 95 72 22 02 00 72 22 02 00 01 00 01 01 4c 03 bd 0c 46 00 b5 00 03 00 05 00 00 BD 7F
@ -327,9 +345,11 @@ Nachricht 0x01: WR an DTU: "Aktuelle DC Daten" (?)
Bedeutung SOF MID WR ser# WR ser# CMD ? PV1.u PV1.i PV1.p PV2.u PV2.i PV2.p ? CRC8 EOF Bedeutung SOF MID WR ser# WR ser# CMD ? PV1.u PV1.i PV1.p PV2.u PV2.i PV2.p ? CRC8 EOF
Einheit BCD (letzte 8) BCD (letzte 8) ? [0.1V] [0.01A] [.1W] [0.1V] [0.01A] [.1W] ? Einheit BCD (letzte 8) BCD (letzte 8) ? [0.1V] [0.01A] [.1W] [0.1V] [0.01A] [.1W] ?
Beispiel 72220200 72220200 ? 33.2V 9.57A 317.2W 18.1V 0.03A 0.5W ? Beispiel 72220200 72220200 ? 33.2V 9.57A 317.2W 18.1V 0.03A 0.5W ?
```
Nachricht 0x02: WR an DTU: "Aktuelle AC Daten" (?) Nachricht 0x02: WR an DTU: "Aktuelle AC Daten" (?)
```
---------------------------------------------------------------------------------------------------------------------------------------------- ----------------------------------------------------------------------------------------------------------------------------------------------
7E 95 72 22 02 00 72 22 02 00 02 28 23 00 00 24 44 00 3C 00 00 09 0F 13 88 0B D5 83 7F 7E 95 72 22 02 00 72 22 02 00 02 28 23 00 00 24 44 00 3C 00 00 09 0F 13 88 0B D5 83 7F
@ -337,9 +357,11 @@ Nachricht 0x02: WR an DTU: "Aktuelle AC Daten" (?)
Bedeutung SOF MID WR ser# WR ser# CMD ? ? ? AC.u AC.f AC.p CRC8 EOF Bedeutung SOF MID WR ser# WR ser# CMD ? ? ? AC.u AC.f AC.p CRC8 EOF
Einheit BCD (letzte 8) BCD (letzte 8) ? [0.1V] [0.01Hz] [0.1W] Einheit BCD (letzte 8) BCD (letzte 8) ? [0.1V] [0.01Hz] [0.1W]
Beispiel 72220200 72220200 ? 9284 60 231.9V 50.00Hz 302.9W Beispiel 72220200 72220200 ? 9284 60 231.9V 50.00Hz 302.9W
```
Nachricht 0x83: WR an DTU (?): "???" (nach CMD wäre das eher auch eine Antwort vom WR?) Nachricht 0x83: WR an DTU (?): "???" (nach CMD wäre das eher auch eine Antwort vom WR?)
```
---------------------------------------------------------------------------------------------------------------------------------------------- ----------------------------------------------------------------------------------------------------------------------------------------------
7E 95 72 22 02 00 72 22 02 00 83 00 03 00 83 03 E8 00 B2 00 0A FD 26 1E 7F 7E 95 72 22 02 00 72 22 02 00 83 00 03 00 83 03 E8 00 B2 00 0A FD 26 1E 7F
@ -347,6 +369,7 @@ Nachricht 0x83: WR an DTU (?): "???" (nach CMD wäre das eher auch eine Antwort
Bedeutung SOF MID WR ser# WR ser# CMD ? ? ? ? ? ? CRC8 EOF Bedeutung SOF MID WR ser# WR ser# CMD ? ? ? ? ? ? CRC8 EOF
Einheit BCD (letzte 8) BCD (letzte 8) ? Einheit BCD (letzte 8) BCD (letzte 8) ?
Beispiel 72220200 72220200 ? 131 1000 178 10 Beispiel 72220200 72220200 ? 131 1000 178 10
```
@ -368,7 +391,7 @@ Enhanced Shockburst Payloads
- These are the packets that are exchanged between inverters and DTU via the Nordic - These are the packets that are exchanged between inverters and DTU via the Nordic
"Enhanced Shockburst" protocol. "Enhanced Shockburst" protocol.
- Each payload is preceded by a preamble, and terminated by a 16-bit CRC, as described - Each payload is preceded by a preamble, and terminated by a 16-bit CRC, as described
in the corresponding Nordic datasheet. See also figure 4 above. in the [Nordic datasheet][3]. See also figure 4 above.
@ -378,17 +401,20 @@ CMD 0x80: DTU --> WR: "Set time/date" (?)
|<-------------CRC16 'modbus' für CRC_M----------------->| |<-------------CRC16 'modbus' für CRC_M----------------->|
15 72220200 72220200 80 0B 00 62 09 04 9b 00 00 00 00 00 00 00 00 F2 68 F0 15 72220200 72220200 80 0B 00 62 09 04 9b 00 00 00 00 00 00 00 00 F2 68 F0
^^ ^^^^^^^^ ^^^^^^^^ ^^ ^^^^^ ^^^^^^^^^^^ ^^^^^ ^^^^^ ^^ ^^ ^^^^^^^^ ^^^^^^^^ ^^ ^^^^^ ^^^^^^^^^^^ ^^^^^ ^^^^^ ^^
Name MID DST_SER# SRC_SER# CMD uk1 TIME (local) SEQ? CRC_M CRC8 Name MID DTU_SER# DTU_SER# CMD uk1 TIME (local) SEQ? CRC_M CRC8
Units see "addressing" ? [s-since-epoch] HI LO Units see "addressing" ? [s-since-epoch] HI LO
Example 72220200 72220200 ? 2022-02-13 Example 72220200 72220200 ? 2022-02-13
13:16:11 13:16:11
``` ```
- This message will cause the inverter to transmit a CMD=0x01, CMD=0x02, and, occasionally, also a CMD=0x83 message - This message will cause the inverter to transmit a CMD=0x01, CMD=0x02, and, occasionally, also a CMD=0x83 message
to the DTU with serial number DST_SER#. to the DTU with serial number DTU_SER#.
- Values of "0xb0, 0x00" and "0x11, 0x00" have been observed for "UK1". Their meaning is unknown. - Values of "0xb0, 0x00" and "0x11, 0x00" have been observed for "UK1". Their meaning is unknown.
- "SEQ" was observed to contain increasing numbers when sent by a Hoymiles DTU. In particular, - "SEQ" was observed to contain increasing numbers when sent by a Hoymiles DTU. In particular,
each issued "command" (e.g. "switch inverter on", "switch inverter off") appears to increase this each issued "command" (e.g. "switch inverter on", "switch inverter off") appears to increase this
value. A constant value of 0x0000 or 0x0005 appears to work just fine. value. A constant value of 0x0000 or 0x0005 appears to work just fine.
- Repeatedly sending the same TIME information (instead of correctly increasing time)
[has been shown](https://www.mikrocontroller.net/topic/525778?page=2#7021386) to result
in identical behaviour, the inverter still replies as described above.
``` ```
@ -404,7 +430,9 @@ Example 72220200 72220200 ? 33.2V 9.57A
- The exact meaning of the contents of this message varies depending on inverter type. So far, the following variants have been observed: - The exact meaning of the contents of this message varies depending on inverter type. So far, the following variants have been observed:
- HM-400 (single channel): - HM-400 (single channel):
- HM-700 (2-channel): - HM-700 (2-channel):
- HM-1500 (4-channel): - HM-1500 (4-channel):
```
TODO TODO TODO
73109025 73109025 01 00 01 014F 0003 000B 0000 40AE 03AC 08E6 7C 73109025 73109025 01 00 01 014F 0003 000B 0000 40AE 03AC 08E6 7C
^^^^ ^^^^ ^^^^ ^^^^ ^^^^ ^^^^ ^^^^ ^^^^ ^^^^ ^^^^
335 3 11 940 2278 335 3 11 940 2278
@ -414,14 +442,16 @@ Example 72220200 72220200 ? 33.2V 9.57A
^^^^ ^^^^ ^^^^ ^^^^ ^^^^ ^^^^ ^^^^ ^^^^ ^^^^ ^^^^
349 77 179 1 13337 349 77 179 1 13337
34.9V 0.77A 1.79W 1 133.37kW 34.9V 0.77A 1.79W 1 133.37kW
```
``` ```
Nachricht 0x02: WR an DTU: "Aktuelle AC Daten" (?) Nachricht 0x02: WR an DTU: "Aktuelle AC Daten" (?)
---------------------------------------------------------------------------------------------------------------------------------------------- ----------------------------------------------------------------------------------------------------------------------------------------------
7E 95 72 22 02 00 72 22 02 00 02 28 23 00 00 24 44 00 3C 00 00 09 0F 13 88 0B D5 83 7F 7E 95 72 22 02 00 72 22 02 00 02 28 23 00 00 24 44 00 3C 00 00 09 0F 13 88 0B D5 83
^^ ^^ ^^^^^^^^^^^ ^^^^^^^^^^^ ^^ ^^^^^ ^^^^^ ^^^^^ ^^ ^^ ^^ ^^ ^^^^^^^^^^^ ^^^^^^^^^^^ ^^ ^^^^^ ^^^^^ ^^^^^ ^^
Bedeutung SOF MID WR ser# WR ser# CMD ? ? ? AC.u AC.f AC.p CRC8 EOF Bedeutung SOF MID WR ser# WR ser# CMD ? ? ? AC.u AC.f AC.p CRC8
Einheit BCD (letzte 8) BCD (letzte 8) ? [0.1V] [0.01Hz] [0.1W] Einheit BCD (letzte 8) BCD (letzte 8) ? [0.1V] [0.01Hz] [0.1W]
Beispiel 72220200 72220200 ? 9284 60 231.9V 50.00Hz 302.9W Beispiel 72220200 72220200 ? 9284 60 231.9V 50.00Hz 302.9W
``` ```
@ -432,23 +462,25 @@ Beispiel 72220200 72220200 ? 9
Nachricht 0x83: WR an DTU (?): "???" (nach CMD wäre das eher auch eine Antwort vom WR?) Nachricht 0x83: WR an DTU (?): "???" (nach CMD wäre das eher auch eine Antwort vom WR?)
---------------------------------------------------------------------------------------------------------------------------------------------- ----------------------------------------------------------------------------------------------------------------------------------------------
7E 95 72 22 02 00 72 22 02 00 83 00 03 00 83 03 E8 00 B2 00 0A FD 26 1E 7F 95 72 22 02 00 72 22 02 00 83 00 03 00 83 03 E8 00 B2 00 0A FD 26 1E
^^ ^^ ^^^^^^^^^^^ ^^^^^^^^^^^ ^^ ^^ ^^ ^^ ^^^^^^^^^^^ ^^^^^^^^^^^ ^^ ^^
Bedeutung SOF MID WR ser# WR ser# CMD ? ? ? ? ? ? CRC8 EOF Bedeutung MID WR ser# WR ser# CMD ? ? ? ? ? ? CRC8
Einheit BCD (letzte 8) BCD (letzte 8) ? Einheit BCD (letzte 8) BCD (letzte 8) ?
Beispiel 72220200 72220200 ? 131 1000 178 10 Beispiel 72220200 72220200 ? 131 1000 178 10
``` ```
Legend Legend
====== ======
MID: Message-ID. Antworten haben Bit 7 gesetzt, **MID**: Message-ID. Antworten haben Bit 7 gesetzt,
z.B. Frage 0x15 --> Antwort 0x95. ```
z.B. Frage 0x07 --> Antwort 0x87. z.B. Frage 0x15 --> Antwort 0x95.
Für Kommunikation GD <--> NRF z.B. Frage 0x07 --> Antwort 0x87.
Für Kommunikation GD <--> NRF
CMD: ```
**CMD**:
Befehl an den WR hat Bit 7 gesetzt Befehl an den WR hat Bit 7 gesetzt
0x80 "Zeit setzen" 0x80 "Zeit setzen"
0x81 "Anfrage DC-Daten", erwartete Antwort: 0x01 0x81 "Anfrage DC-Daten", erwartete Antwort: 0x01
@ -460,33 +492,41 @@ CMD:
0x01 "Aktuelle DC-Daten" 0x01 "Aktuelle DC-Daten"
0x02 "Aktuelle AC-Daten" 0x02 "Aktuelle AC-Daten"
SOF: Start-of-Frame 0x7e **SOF**: Start-of-Frame 0x7e
EOF: End-of-Frame 0x7f
CRC8: CRC8 mit poly=1 init=0 xor=0, für alle Bytes zwischen SOF und CRC8. **EOF**: End-of-Frame 0x7f
**CRC8**: CRC8 mit poly=1 init=0 xor=0, für alle Bytes zwischen SOF und CRC8.
Beispiel in Python: Beispiel in Python:
```
>>> import crcmod >>> import crcmod
>>> f = crcmod.mkCrcFun(0x101, initCrc=0, xorOut=0) >>> f = crcmod.mkCrcFun(0x101, initCrc=0, xorOut=0)
>>> payload = bytes((0x95,0x72,0x22,0x02,0x00,0x72,0x22,0x02,0x00,0x83,0x00,0x03,0x00,0x83,0x03,0xE8,0x00,0xB2,0x00,0x0A,0xFD,0x26)) >>> payload = bytes((0x95,0x72,0x22,0x02,0x00,0x72,0x22,0x02,0x00,0x83,0x00,0x03,0x00,0x83,0x03,0xE8,0x00,0xB2,0x00,0x0A,0xFD,0x26))
>>> hex(f(payload)) >>> hex(f(payload))
'0x1e' '0x1e'
```
CRC_M: CRC16 wie für "Modbus"-Protokoll, High-Byte gefolgt von Low-Byte **CRC_M**: CRC16 wie für "Modbus"-Protokoll, High-Byte gefolgt von Low-Byte
Beispiel in Python: Beispiel in Python:
```
>>> import crcmod >>> import crcmod
>>> f = crcmod.predefined.mkPredefinedCrcFun('modbus') >>> f = crcmod.predefined.mkPredefinedCrcFun('modbus')
>>> payload = bytes((0x0B,0x00,0x62,0x2F,0x45,0x96,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00)) >>> payload = bytes((0x0B,0x00,0x62,0x2F,0x45,0x96,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00))
>>> hex(f(payload)) >>> hex(f(payload))
'0x3bd6' '0x3bd6'
```
TIME: Aktuelle (DTU-)Zeit als Unix "time_t" (Sekunden seit 1970-01-01) **TIME**: Aktuelle (DTU-)Zeit als Unix "time_t" (Sekunden seit 1970-01-01)
Glossar Glossary
======= ========
**WR**: Wechselrichter (inverter)
**DTU**: Data Terminal Unit (?). Die Hoymiles-Bezeichnung für den Kommunikations-Master.
WR: Wechselrichter (inverter) **BCD**: Binary Coded Decimal
DTU: Data Terminal Unit (?). Die Hoymiles-Bezeichnung für den Kommunikations-Master.
BCD: Binary Coded Decimal
Notizen Notizen
@ -504,8 +544,9 @@ References
- [1]: https://www.mikrocontroller.net/topic/525778 "The post that started the community effort" - [1]: https://www.mikrocontroller.net/topic/525778 "The post that started the community effort"
- [2]: https://www.mikrocontroller.net "mikrocontroller.net" - [2]: https://www.mikrocontroller.net "mikrocontroller.net"
- [3]: "Nordic NRF24LE01+ datasheet" - [3]: https://infocenter.nordicsemi.com/pdf/nRF24LE1_PS_v1.6.pdf "Nordic NRF24LE01+ datasheet"
- [4]: https://nrf24.github.io/RF24 "Optimized high speed nRF24L01+ driver documentation" - [4]: https://nrf24.github.io/RF24 "Optimized high speed nRF24L01+ driver documentation"
- [5]: https://github.com/grindylow/ahoy "AHOY Communications Project"
Revision History Revision History

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