This is a fully-working example of reading data from SDM enetry meter using device with Esphome firmware.
In this implementation I am using HardwareSerial to read data from SDM, because it's more stable than SoftwareSerial.
You should use TTL to RS485 converter and connect RX port of converter to TX port of Esphome device and TX port of converter to RX port of Esphome device.
This component uses the SDM library from https://github.com/reaper7/SDM_Energy_Meter
# load the component
external_components:
- source: github://depuits/esphome-SDM-enery-meter
# disable logging
logger:
baud_rate: 0
# uart setup
uart:
tx_pin: TX
rx_pin: RX
baud_rate: 9600
stop_bits: 1
# sdm sensor component setup
sensor:
- platform: sdm
# optional parameters with defaults
baud_rate: 9600
tx_pin: TX
rx_pin: RX
channel: 1
dere_pin: 16 # -1 is disabled
# sdm registers to read and report
sdm_phase_1_voltage:
name: "Voltage"
sdm_phase_1_current:
name: "Current"
sdm_phase_1_power:
name: "Power"
sdm_import_active_energy:
name: "Energy import"
| Register config name | Register address | Unit | SDM630 | SDM230 | SDM220 | SDM120CT | SDM120 | SDM72D |
|---|---|---|---|---|---|---|---|---|
| sdm_phase_1_voltage | 0x0000 | V | 1 | 1 | 1 | 1 | 1 | |
| sdm_phase_2_voltage | 0x0002 | V | 1 | |||||
| sdm_phase_3_voltage | 0x0004 | V | 1 | |||||
| sdm_phase_1_current | 0x0006 | A | 1 | 1 | 1 | 1 | 1 | |
| sdm_phase_2_current | 0x0008 | A | 1 | |||||
| sdm_phase_3_current | 0x000A | A | 1 | |||||
| sdm_phase_1_power | 0x000C | W | 1 | 1 | 1 | 1 | 1 | |
| sdm_phase_2_power | 0x000E | W | 1 | |||||
| sdm_phase_3_power | 0x0010 | W | 1 | |||||
| sdm_phase_1_apparent_power | 0x0012 | VA | 1 | 1 | 1 | 1 | 1 | |
| sdm_phase_2_apparent_power | 0x0014 | VA | 1 | |||||
| sdm_phase_3_apparent_power | 0x0016 | VA | 1 | |||||
| sdm_phase_1_reactive_power | 0x0018 | VAr | 1 | 1 | 1 | 1 | 1 | |
| sdm_phase_2_reactive_power | 0x001A | VAr | 1 | |||||
| sdm_phase_3_reactive_power | 0x001C | VAr | 1 | |||||
| sdm_phase_1_power_factor | 0x001E | 1 | 1 | 1 | 1 | 1 | ||
| sdm_phase_2_power_factor | 0x0020 | 1 | ||||||
| sdm_phase_3_power_factor | 0x0022 | 1 | ||||||
| sdm_phase_1_angle | 0x0024 | Degrees | 1 | 1 | 1 | 1 | ||
| sdm_phase_2_angle | 0x0026 | Degrees | 1 | |||||
| sdm_phase_3_angle | 0x0028 | Degrees | 1 | |||||
| sdm_average_l_to_n_volts | 0x002A | V | 1 | |||||
| sdm_average_line_current | 0x002E | A | 1 | |||||
| sdm_sum_line_current | 0x0030 | A | 1 | |||||
| sdm_total_system_power | 0x0034 | W | 1 | 1 | ||||
| sdm_total_system_apparent_power | 0x0038 | VA | 1 | |||||
| sdm_total_system_reactive_power | 0x003C | VAr | 1 | |||||
| sdm_total_system_power_factor | 0x003E | 1 | ||||||
| sdm_total_system_phase_angle | 0x0042 | Degrees | 1 | |||||
| sdm_frequency | 0x0046 | Hz | 1 | 1 | 1 | 1 | 1 | |
| sdm_import_active_energy | 0x0048 | kWh/MWh | 1 | 1 | 1 | 1 | 1 | 1 |
| sdm_export_active_energy | 0x004A | kWh/MWh | 1 | 1 | 1 | 1 | 1 | 1 |
| sdm_import_reactive_energy | 0x004C | kVArh/MVArh | 1 | 1 | 1 | 1 | 1 | |
| sdm_export_reactive_energy | 0x004E | kVArh/MVArh | 1 | 1 | 1 | 1 | 1 | |
| sdm_vah_since_last_reset | 0x0050 | kVAh/MVAh | 1 | |||||
| sdm_ah_since_last_reset | 0x0052 | Ah/kAh | 1 | |||||
| sdm_total_system_power_demand | 0x0054 | W | 1 | 1 | ||||
| sdm_maximum_total_system_power_demand | 0x0056 | W | 1 | 1 | ||||
| sdm_current_system_positive_power_demand | 0x0058 | W | 1 | |||||
| sdm_maximum_system_positive_power_demand | 0x005A | W | 1 | |||||
| sdm_current_system_reverse_power_demand | 0x005C | W | 1 | |||||
| sdm_maximum_system_reverse_power_demand | 0x005E | W | 1 | |||||
| sdm_total_system_va_demand | 0x0064 | VA | 1 | |||||
| sdm_maximum_total_system_va_demand | 0x0066 | VA | 1 | |||||
| sdm_neutral_current_demand | 0x0068 | A | 1 | |||||
| sdm_maximum_neutral_current | 0x006A | A | 1 | |||||
| sdm_line_1_to_line_2_volts | 0x00C8 | V | 1 | |||||
| sdm_line_2_to_line_3_volts | 0x00CA | V | 1 | |||||
| sdm_line_3_to_line_1_volts | 0x00CC | V | 1 | |||||
| sdm_average_line_to_line_volts | 0x00CE | V | 1 | |||||
| sdm_neutral_current | 0x00E0 | A | 1 | |||||
| sdm_phase_1_ln_volts_thd | 0x00EA | % | 1 | |||||
| sdm_phase_2_ln_volts_thd | 0x00EC | % | 1 | |||||
| sdm_phase_3_ln_volts_thd | 0x00EE | % | 1 | |||||
| sdm_phase_1_current_thd | 0x00F0 | % | 1 | |||||
| sdm_phase_2_current_thd | 0x00F2 | % | 1 | |||||
| sdm_phase_3_current_thd | 0x00F4 | % | 1 | |||||
| sdm_average_line_to_neutral_volts_thd | 0x00F8 | % | 1 | |||||
| sdm_average_line_current_thd | 0x00FA | % | 1 | |||||
| sdm_total_system_power_factor_inv | 0x00FE | 1 | ||||||
| sdm_phase_1_current_demand | 0x0102 | A | 1 | 1 | ||||
| sdm_phase_2_current_demand | 0x0104 | A | 1 | |||||
| sdm_phase_3_current_demand | 0x0106 | A | 1 | |||||
| sdm_maximum_phase_1_current_demand | 0x0108 | A | 1 | 1 | ||||
| sdm_maximum_phase_2_current_demand | 0x010A | A | 1 | |||||
| sdm_maximum_phase_3_current_demand | 0x010C | A | 1 | |||||
| sdm_line_1_to_line_2_volts_thd | 0x014E | % | 1 | |||||
| sdm_line_2_to_line_3_volts_thd | 0x0150 | % | 1 | |||||
| sdm_line_3_to_line_1_volts_thd | 0x0152 | % | 1 | |||||
| sdm_average_line_to_line_volts_thd | 0x0154 | % | 1 | |||||
| sdm_total_active_energy | 0x0156 | kWh | 1 | 1 | 1 | 1 | 1 | 1 |
| sdm_total_reactive_energy | 0x0158 | kVArh | 1 | 1 | 1 | 1 | 1 | |
| sdm_l1_import_active_energy | 0x015A | kWh | 1 | |||||
| sdm_l2_import_active_energy | 0x015C | kWh | 1 | |||||
| sdm_l3_import_active_energy | 0x015E | kWh | 1 | |||||
| sdm_l1_export_active_energy | 0x0160 | kWh | 1 | |||||
| sdm_l2_export_active_energy | 0x0162 | kWh | 1 | |||||
| sdm_l3_export_active_energy | 0x0164 | kWh | 1 | |||||
| sdm_l1_total_active_energy | 0x0166 | kWh | 1 | |||||
| sdm_l2_total_active_energy | 0x0168 | kWh | 1 | |||||
| sdm_l3_total_active_energy | 0x016a | kWh | 1 | |||||
| sdm_l1_import_reactive_energy | 0x016C | kVArh | 1 | |||||
| sdm_l2_import_reactive_energy | 0x016E | kVArh | 1 | |||||
| sdm_l3_import_reactive_energy | 0x0170 | kVArh | 1 | |||||
| sdm_l1_export_reactive_energy | 0x0172 | kVArh | 1 | |||||
| sdm_l2_export_reactive_energy | 0x0174 | kVArh | 1 | |||||
| sdm_l3_export_reactive_energy | 0x0176 | kVArh | 1 | |||||
| sdm_l1_total_reactive_energy | 0x0178 | kVArh | 1 | |||||
| sdm_l2_total_reactive_energy | 0x017A | kVArh | 1 | |||||
| sdm_l3_total_reactive_energy | 0x017C | kVArh | 1 | |||||
| sdm_current_resettable_total_active_energy | 0x0180 | kWh | 1 | 1 | ||||
| sdm_current_resettable_total_reactive_energy | 0x0182 | kVArh | 1 | |||||
| sdm_current_resettable_import_energy | 0x0184 | kWh | 1 | |||||
| sdm_current_resettable_export_energy | 0x0186 | kWh | 1 | |||||
| sdm_import_power | 0x0500 | W | 1 | |||||
| sdm_export_power | 0x0502 | W | 1 |