Which Script for TASMOTA Smart Meter Interface with efr SGM-C8

[Amirosh1]

I am looking for a Script for my Meter efr SGM-C8 not C4 please help me . thanks

[perry010]

D
B
->sensor53 r
M 1
+1,3,s,16,9600,ENERGY
1,77070100100700ff@1,Aktuelle Leistung,W,Power,0
1,77070100010800ff@1000,Bezug,kWh,Total,4
1,77070100020800ff@1000,Einspeisung,kWh,Supply,4
1,77070100200700ff@1,Spannung L1,V,Voltage,1
1,77070100340700ff@1,Spannung L2,V,Voltage_L2,1
1,77070100480700ff@1,Spannung L3,V,Voltage_L3,1
1,770701001f0700ff@1,Strom L1,A,Current,2
1,77070100330700ff@1,Strom L2,A,Current_L2,2
1,77070100470700ff@1,Strom L3,A,Current_L3,2
1,77070100240700FF@1,Wirkleistung L1,W,wirkleistung_l1,0
1,77070100380700FF@1,Wirkleistung L2,W,wirkleistung_l2,0
1,770701004C0700FF@1,Wirkleistung L3,W,wirkleistung_l3,0
1,77070100510701ff@1,Phasenabweichung L2-L1,°,phase_angle_L2_L1,0
1,77070100510702ff@1,Phasenabweichung L3-L1,°,phase_angle_L3_L1,0
1,77070100510704ff@1,Phasenabweichung I/U L1,°,phase_angle_L1,1
1,7707010051070fff@1,Phasenabweichung I/U L2,°,phase_angle_L2,1
1,7707010051071aff@1,Phasenabweichung I/U L3,°,phase_angle_L3,1
1,770701000e0700ff@1,Frequenz,Hz,Freq,1
1,77070100600100ff@#,Server-ID,,ID,0

[FaserF]

@anro05 I have now posted the script here: #21415 (reply in thread)

[Smitty367]

@FaserF
Thank you very much for your aid Fabian. Do you also know the script lines to get the historical values like consumption yesterday, - last week, - last month, - last year? Would be nice if you could post it too. Many Thanks.

[FaserF]

I don't have those sensors. I am just using the script mentioned above. Never needed those values through, as the total sensor has the history in Homeassistent

[Smitty367]

@FaserF
You don't need to have special sonsors for historical vlues. Every Smart Meter should give hiszorical data, as for example my Logarex LK13B (see attachment

)

[Smitty367]

here my Logarex Script. You only have to ask the right variables. But I red that sometimes the manufacturer of the Smart Meter supresses this.

D
B
=>sensor53 r
M 1
+1,3,o,0,9600
1,1-0:16.7.0255(@1,aktuell,W,current,16
1,1-0:1.8.0255(@1,gesamt,KWh,total_in,2
1,1-0:1.8.096(@1,gestern,KWh,total_day,1
1,1-0:1.8.097(@1,letzte Woche,KWh,total_week,1
1,1-0:1.8.098(@1,letzter Monat,KWh,total_month,1
1,1-0:1.8.099(@1,letztes Jahr,KWh,total_year,1

[gerontec]

#!/usr/bin/python3
import serial
import time
import binascii
import struct

PORT = '/dev/ttyUSB20'
BAUDRATE = 9600
TIMEOUT = 10 # Increased timeout

def read_sgm_c8():
try:
with serial.Serial(PORT, BAUDRATE, timeout=TIMEOUT) as ser:
print(f"Connected to {PORT} at {BAUDRATE} baud")
while True:
data = ser.read(2000) # Increased buffer size
if data:
print(f"Received {len(data)} bytes")
print(f"Raw data: {binascii.hexlify(data).decode()}")
if b'\x1b\x1b\x1b\x1b' in data:
print("Found start sequence")
process_sml_message(data)
else:
print("Start sequence not found in data")
else:
print("No data received")

            time.sleep(1)  # Wait before next read attempt
except serial.SerialException as e:
    print(f"Serial port error: {e}")
except KeyboardInterrupt:
    print("Script terminated by user")
except Exception as e:
    print(f"An error occurred: {e}")

def process_sml_message(data):
consumption = find_value(data, '77070100010800ff', 3, 10000)
production = find_value(data, '77070100020800ff', 3, 10000)
power = find_value(data, '77070100100700ff', 2, 1)
voltage = find_value(data, '77070100200700ff', 2, 10)
current = find_value(data, '770701001f0700ff', 2, 1000)

print(f"Total Consumption: {consumption:.4f} kWh")
print(f"Total Production: {production:.4f} kWh")
print(f"Current Power: {power:.1f} W")
print(f"Voltage: {voltage:.1f} V")
print(f"Current: {current:.3f} A")

if power is not None and voltage is not None and current is not None and voltage > 0 and current > 0:
    apparent_power = voltage * current
    if apparent_power > 0:
        power_factor = power / apparent_power
        print(f"Power Factor: {power_factor:.3f}")

print("---")

def find_value(data, obis_code, length, scale_factor):
index = data.find(bytes.fromhex(obis_code))
if index != -1:
value_bytes = data[index + len(bytes.fromhex(obis_code)) + 13:index + len(bytes.fromhex(obis_code)) + 13 + length]
if len(value_bytes) == length:
return int.from_bytes(value_bytes, 'big') / scale_factor
return None

if name == "main":
read_sgm_c8()

[Smitty367]

@FaserF

Hello Fabian,

you tested the above sml script on a EFR SGM-C8? Did you change anythng with this script? I tried to run it on my tasmota ir-read head as well and and it did not. My Editor even disables the ´activate script´ flag when I try to save. Would you please post your whole script here again? Maybe with a screen shot?

Thank you very much

[FaserF]

I have not really changed anything, worked fine so far for me. Running Tasmota 14.1.0

>D
>B
->sensor53 r
>M 1
+1,3,s,16,9600,ENERGY
1,77070100010800ff@1000,Comsumption,kWh,Total,4
;for meters measuring feed-in SGM-Cx-xxx2xx
;1,77070100020800ff@1000,Supply,kWh,Supply,4
;next 4 lines for double-tariff meters SGM-Cx-xxxxTx
;1,77070100010801ff@1000,Comsumption_t1,kWh,Total_t1,4
;1,77070100010802ff@1000,Comsumption_t2,kWh,Total_t2,4
;1,77070100020801ff@1000,Supply_t1,kWh,Supply_t1,4
;1,77070100020802ff@1000,Supply_t2,kWh,Supply_t2,4
;all commented lines from here on for 3-phase meter SGM-C4
1,77070100100700ff@1,Actual Power,W,Power,0
1,77070100200700ff@1,Voltage L1,V,Voltage,1
1,77070100340700ff@1,Voltage L2,V,Voltage_L2,1
1,77070100480700ff@1,Voltage L3,V,Voltage_L3,1
1,770701001f0700ff@1,Current L1,A,Current,2
1,77070100330700ff@1,Current L2,A,Current_L2,2
1,77070100470700ff@1,Current L3,A,Current_L3,2
1,77070100510701ff@1,Phaseangle L2-L1,deg,phase_angle_L2_L1,0
1,77070100510702ff@1,Phaseangle L3-L1,deg,phase_angle_L3_L1,0
1,77070100510704ff@1,Phaseangle I/U L1,deg,phase_angle_L1,1 
1,7707010051070fff@1,Phaseangle I/U L2,deg,phase_angle_L2,1  
1,7707010051071aff@1,Phaseangle I/U L3,deg,phase_angle_L3,1 
1,770701000e0700ff@1,Frequency,Hz,Freq,1
;all commented lines from here on just for completeness
;1,7707010000020000@1,Firmware Version,,FwVer,0
;1,77070100605a0201@1,Firmware Checksum,,FwCheck,0
;1,7707010061610000@1,Error Register,,ErrorReg,0
;1,7707010060320101@1,Hardware Version,,HwVer,0
;1,7707010060320104@1,Parameter Version,,ParamVer,0
;1,77070100600100ff@#,Server-ID,,ID,0
;You can find your server-id printed on your meter. If you want you can also convert it to your Identifikationsnummer with some ASCII, DEC and HEX encoding. 0A-01-45-46-52-ST-UV-WX-YZ = 1EFR + string(S) + string(T) + hexToDec(UVWXYZ)

[simoneggersdorfer]

I have not really changed anything, worked fine so far for me. Running Tasmota 14.1.0

>D
>B
->sensor53 r
>M 1
+1,3,s,16,9600,ENERGY
1,77070100010800ff@1000,Comsumption,kWh,Total,4
;for meters measuring feed-in SGM-Cx-xxx2xx
;1,77070100020800ff@1000,Supply,kWh,Supply,4
;next 4 lines for double-tariff meters SGM-Cx-xxxxTx
;1,77070100010801ff@1000,Comsumption_t1,kWh,Total_t1,4
;1,77070100010802ff@1000,Comsumption_t2,kWh,Total_t2,4
;1,77070100020801ff@1000,Supply_t1,kWh,Supply_t1,4
;1,77070100020802ff@1000,Supply_t2,kWh,Supply_t2,4
;all commented lines from here on for 3-phase meter SGM-C4
1,77070100100700ff@1,Actual Power,W,Power,0
1,77070100200700ff@1,Voltage L1,V,Voltage,1
1,77070100340700ff@1,Voltage L2,V,Voltage_L2,1
1,77070100480700ff@1,Voltage L3,V,Voltage_L3,1
1,770701001f0700ff@1,Current L1,A,Current,2
1,77070100330700ff@1,Current L2,A,Current_L2,2
1,77070100470700ff@1,Current L3,A,Current_L3,2
1,77070100510701ff@1,Phaseangle L2-L1,deg,phase_angle_L2_L1,0
1,77070100510702ff@1,Phaseangle L3-L1,deg,phase_angle_L3_L1,0
1,77070100510704ff@1,Phaseangle I/U L1,deg,phase_angle_L1,1 
1,7707010051070fff@1,Phaseangle I/U L2,deg,phase_angle_L2,1  
1,7707010051071aff@1,Phaseangle I/U L3,deg,phase_angle_L3,1 
1,770701000e0700ff@1,Frequency,Hz,Freq,1
;all commented lines from here on just for completeness
;1,7707010000020000@1,Firmware Version,,FwVer,0
;1,77070100605a0201@1,Firmware Checksum,,FwCheck,0
;1,7707010061610000@1,Error Register,,ErrorReg,0
;1,7707010060320101@1,Hardware Version,,HwVer,0
;1,7707010060320104@1,Parameter Version,,ParamVer,0
;1,77070100600100ff@#,Server-ID,,ID,0
;You can find your server-id printed on your meter. If you want you can also convert it to your Identifikationsnummer with some ASCII, DEC and HEX encoding. 0A-01-45-46-52-ST-UV-WX-YZ = 1EFR + string(S) + string(T) + hexToDec(UVWXYZ)

Hey man, I wanted to do the same Stromzähler Model i. home Assistant. Could you maybe get in contact with me and help me witj the full setup and hardware? Would be really happy!!