2 Commits

Author SHA1 Message Date
Nils Reiners
8eda3bc954 reading out registers corrected 2025-09-16 22:46:42 +02:00
Nils Reiners
b9cba11be7 cleaned up 2025-09-16 12:57:37 +02:00
9 changed files with 150 additions and 108 deletions

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@@ -1,46 +0,0 @@
import csv
import os
import tempfile
import shutil
class DataBaseCsv:
def __init__(self, filename: str):
self.filename = filename
def store_data(self, data: dict):
new_fields = list(data.keys())
# If file does not exist or is empty → create new file with header
if not os.path.exists(self.filename) or os.path.getsize(self.filename) == 0:
with open(self.filename, mode='w', newline='') as csv_file:
writer = csv.DictWriter(csv_file, fieldnames=new_fields)
writer.writeheader()
writer.writerow(data)
return
# If file exists → read existing header and modbus_registers
with open(self.filename, mode='r', newline='') as csv_file:
reader = csv.DictReader(csv_file)
existing_fields = reader.fieldnames
existing_data = list(reader)
# Merge old and new fields (keep original order, add new ones)
all_fields = existing_fields.copy()
for field in new_fields:
if field not in all_fields:
all_fields.append(field)
# Write to a temporary file with updated header
with tempfile.NamedTemporaryFile(mode='w', delete=False, newline='', encoding='utf-8') as tmp_file:
writer = csv.DictWriter(tmp_file, fieldnames=all_fields)
writer.writeheader()
# Write old rows with updated field list
for row in existing_data:
writer.writerow({field: row.get(field, '') for field in all_fields})
# Write new modbus_registers row
writer.writerow({field: data.get(field, '') for field in all_fields})
# Replace original file with updated temporary file
shutil.move(tmp_file.name, self.filename)

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@@ -1,13 +1,12 @@
import time
from datetime import datetime
from data_base_csv import DataBaseCsv
from data_base_influx import DataBaseInflux
from heat_pump import HeatPump
from pv_inverter import PvInverter
from shelly_pro_3m import ShellyPro3m
# For dev-System run in terminal: ssh -N -L 127.0.0.1:8111:10.0.0.10:502 pi@192.168.1.146
# For productive-System change port in heatpump to 502
# For productive-System change IP-adress in heatpump to '10.0.0.10' and port to 502
interval_seconds = 10
@@ -18,7 +17,7 @@ db = DataBaseInflux(
bucket="allmende_db"
)
hp = HeatPump(device_name='hp_master', ip_address='localhost', port=8111)
hp = HeatPump(device_name='hp_master', ip_address='10.0.0.10', port=502)
shelly = ShellyPro3m(device_name='wohnung_2_6', ip_address='192.168.1.121')
wr = PvInverter(device_name='wr_master', ip_address='192.168.1.112')
@@ -31,5 +30,6 @@ while True:
db.store_data(shelly.device_name, shelly.get_state())
db.store_data(wr.device_name, wr.get_state())
#controller.perform_action()
time.sleep(0.1)

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@@ -1,22 +0,0 @@
from sshtunnel import SSHTunnelForwarder
# ---- KONFIG ----
SSH_HOST = "192.168.1.146" # Raspberry Pi im 192.168.1.x Netz
SSH_PORT = 22
SSH_USER = "pi"
PASSWORD = 'raspberry' # oder Passwort als String
REMOTE_IP = "10.0.0.10" # Wärmepumpe im 10.0.0.x Netz
REMOTE_PORT = 502 # Modbus/TCP Port
def make_tunnel(port):
tunnel = SSHTunnelForwarder(
(SSH_HOST, SSH_PORT),
ssh_username=SSH_USER,
ssh_password=PASSWORD,
remote_bind_address=(REMOTE_IP, REMOTE_PORT),
local_bind_address=("127.0.0.1", port),
)
tunnel.start()
return tunnel

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@@ -1,68 +1,117 @@
import time
import struct
import pandas as pd
import matplotlib.pyplot as plt
from collections import deque
from typing import Dict, Any, List, Tuple, Optional
from pymodbus.client import ModbusTcpClient
EXCEL_PATH = "modbus_registers/pv_inverter_registers.xlsx"
class PvInverter:
def __init__(self, device_name: str, ip_address: str, port: int = 502, unit: int = 1):
self.device_name = device_name
self.ip = ip_address
self.port = port
self.unit = unit
self.client = None
self.registers = None
self.client: Optional[ModbusTcpClient] = None
self.registers: Dict[int, Dict[str, Any]] = {} # addr -> {"desc":..., "type":...}
self.connect_to_modbus()
self.get_registers()
self.load_registers(EXCEL_PATH)
# ---------- Verbindung ----------
def connect_to_modbus(self):
# Timeout & retries optional, aber hilfreich:
self.client = ModbusTcpClient(self.ip, port=self.port, timeout=3.0, retries=3)
if not self.client.connect():
print("Verbindung zu Wechselrichter fehlgeschlagen.")
print("Verbindung zu Wechselrichter fehlgeschlagen.")
raise SystemExit(1)
print("Verbindung zu Wechselrichter erfolgreich.")
# WICHTIG: NICHT hier schließen!
# finally: self.client.close() <-- entfernen
print("Verbindung zu Wechselrichter hergestellt.")
def close(self):
if self.client:
self.client.close()
self.client = None
def get_registers(self):
excel_path = "modbus_registers/pv_inverter_registers.xlsx"
# ---------- Register-Liste ----------
def load_registers(self, excel_path: str):
xls = pd.ExcelFile(excel_path)
df_input_registers = xls.parse()
df_clean = df_input_registers[['MB Adresse', 'Beschreibung', 'Variabel Typ']].dropna()
df_clean['MB Adresse'] = df_clean['MB Adresse'].astype(int)
df = xls.parse()
# Passen die Spaltennamen bei dir anders, bitte hier anpassen:
cols = ["MB Adresse", "Beschreibung", "Variabel Typ"]
for c in cols:
if c not in df.columns:
raise ValueError(f"Spalte '{c}' fehlt in {excel_path}")
df = df[cols].dropna()
df["MB Adresse"] = df["MB Adresse"].astype(int)
# NORMALISIERE TYP
def norm_type(x: Any) -> str:
s = str(x).strip().upper()
return "REAL" if s == "REAL" else "INT"
self.registers = {
row['MB Adresse']: {
'desc': row['Beschreibung'],
'type': 'REAL' if str(row['Variabel Typ']).upper() == 'REAL' else 'INT'
int(row["MB Adresse"]): {
"desc": str(row["Beschreibung"]).strip(),
"type": norm_type(row["Variabel Typ"])
}
for _, row in df_clean.iterrows()
for _, row in df.iterrows()
}
print(f" {len(self.registers)} Register aus Excel geladen.")
def get_state(self):
data = {'Zeit': time.strftime('%Y-%m-%d %H:%M:%S')}
for address, info in self.registers.items():
reg_type = info['type']
# Unit-ID mitgeben (wichtig bei pymodbus>=3)
result = self.client.read_holding_registers(
address=address,
count=2 if reg_type == 'REAL' else 1,
slave=self.unit # pymodbus 2.x -> 'slave', nicht 'unit'
)
if result.isError():
print(f"Fehler beim Lesen von Adresse {address}: {result}")
# ---------- Low-Level Lesen ----------
def _try_read(self, fn_name: str, address: int, count: int) -> Optional[List[int]]:
fn = getattr(self.client, fn_name)
# pymodbus 3.8.x hat 'slave='; Fallbacks schaden nicht
for kwargs in (dict(address=address, count=count, slave=self.unit),
dict(address=address, count=count),
):
try:
res = fn(**kwargs)
if res is None or (hasattr(res, "isError") and res.isError()):
continue
return res.registers
except TypeError:
continue
return None
# Minimal invasiv: wie bei dir erstes Register verwenden
value = result.registers[0]
print(f"Adresse {address} - {info['desc']}: {value}")
data[f"{address} - {info['desc']}"] = value
def _read_any(self, address: int, count: int) -> Optional[List[int]]:
regs = self._try_read("read_holding_registers", address, count)
if regs is None:
regs = self._try_read("read_input_registers", address, count)
return regs
# ---------- Decoding ----------
@staticmethod
def _to_i16(u16: int) -> int:
return struct.unpack(">h", struct.pack(">H", u16))[0]
@staticmethod
def _to_f32_from_two(u16_hi: int, u16_lo: int, msw_first: bool = True) -> float:
if msw_first:
b = struct.pack(">HH", u16_hi, u16_lo)
else:
b = struct.pack(">HH", u16_lo, u16_hi)
return struct.unpack(">f", b)[0]
def read_one(self, address_excel: int, rtype: str) -> Optional[float]:
"""Liest einen Wert nach Typ ('INT' oder 'REAL') unter Berücksichtigung Base-1."""
addr = address_excel
if rtype == "REAL":
regs = self._read_any(addr, 2)
if not regs or len(regs) < 2:
return None
return self._to_f32_from_two(regs[0], regs[1])
else: # INT
regs = self._read_any(addr, 1)
if not regs:
return None
return float(self._to_i16(regs[0]))
def get_state(self) -> Dict[str, Any]:
"""Liest ALLE Register aus self.registers und gibt dict zurück."""
data = {"Zeit": time.strftime("%Y-%m-%d %H:%M:%S")}
for address, meta in self.registers.items():
val = self.read_one(address, meta["type"])
if val is None:
continue
key = f"{address} - {meta['desc']}"
data[key] = val
return data

61
test_meter.py Normal file
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@@ -0,0 +1,61 @@
#!/usr/bin/env python3
# -*- coding: utf-8 -*-
from pymodbus.client import ModbusTcpClient
import struct, sys
MODBUS_IP = "192.168.1.112"
MODBUS_PORT = 502
UNIT_ID = 1
METER_START = 40240 # Startadresse Model 203-Felder
def to_i16(u16): # unsigned 16 → signed 16
return struct.unpack(">h", struct.pack(">H", u16))[0]
def read_regs(client, addr, count):
rr = client.read_holding_registers(address=addr, count=count, slave=UNIT_ID)
if rr.isError():
return None
return rr.registers
def read_meter_power(client):
base = METER_START
p = read_regs(client, base + 16, 1) # M_AC_Power
pa = read_regs(client, base + 17, 1) # Phase A
pb = read_regs(client, base + 18, 1) # Phase B
pc = read_regs(client, base + 19, 1) # Phase C
sf = read_regs(client, base + 20, 1) # Scale Factor
if not p or not sf:
return None
sff = to_i16(sf[0])
return {
"total": to_i16(p[0]) * (10 ** sff),
"A": to_i16(pa[0]) * (10 ** sff) if pa else None,
"B": to_i16(pb[0]) * (10 ** sff) if pb else None,
"C": to_i16(pc[0]) * (10 ** sff) if pc else None,
"sf": sff
}
def fmt_w(v):
if v is None: return "-"
neg = v < 0
v = abs(v)
return f"{'-' if neg else ''}{v/1000:.2f} kW" if v >= 1000 else f"{'-' if neg else ''}{v:.0f} W"
def main():
client = ModbusTcpClient(MODBUS_IP, port=MODBUS_PORT)
if not client.connect():
print("❌ Verbindung fehlgeschlagen."); sys.exit(1)
try:
m = read_meter_power(client)
if m:
print(f"Meter-Leistung: {fmt_w(m['total'])} "
f"(A {fmt_w(m['A'])}, B {fmt_w(m['B'])}, C {fmt_w(m['C'])}) [SF={m['sf']}]")
else:
print("Meter-Leistung konnte nicht gelesen werden.")
finally:
client.close()
if __name__ == "__main__":
main()