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Fix 3-phase AC sensors showing zero/unknown on MOD and SPH TL3 #22

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Merged
0xAHA merged 1 commit into from
Nov 10, 2025
Merged

Fix 3-phase AC sensors showing zero/unknown on MOD and SPH TL3 #22

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5 changes: 3 additions & 2 deletions custom_components/growatt_modbus/device_profiles.py
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Original file line number Diff line number Diff line change
Expand Up @@ -59,9 +59,10 @@
}

THREE_PHASE_SENSORS: Set[str] = {
"ac_voltage_r", "ac_voltage_s", "ac_voltage_t", # Phase voltages
"ac_voltage_rs", "ac_voltage_st", "ac_voltage_tr", # Line-to-line voltages
"ac_current_r", "ac_current_s", "ac_current_t",
"ac_power_r", "ac_power_s", "ac_power_t",
"ac_current_r", "ac_current_s", "ac_current_t", # Phase currents
"ac_power_r", "ac_power_s", "ac_power_t", # Phase powers
"ac_frequency",
}

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73 changes: 69 additions & 4 deletions custom_components/growatt_modbus/growatt_modbus.py
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Original file line number Diff line number Diff line change
Expand Up @@ -72,11 +72,27 @@ class GrowattData:
pv3_power: float = 0.0 # W
pv_total_power: float = 0.0 # W

# AC Output
# AC Output (generic - usually Phase R for 3-phase)
ac_voltage: float = 0.0 # V
ac_current: float = 0.0 # A
ac_power: float = 0.0 # W
ac_frequency: float = 0.0 # Hz

# Three-Phase AC Output (individual phases)
ac_voltage_r: float = 0.0 # V (Phase R/L1)
ac_current_r: float = 0.0 # A (Phase R/L1)
ac_power_r: float = 0.0 # W (Phase R/L1)
ac_voltage_s: float = 0.0 # V (Phase S/L2)
ac_current_s: float = 0.0 # A (Phase S/L2)
ac_power_s: float = 0.0 # W (Phase S/L2)
ac_voltage_t: float = 0.0 # V (Phase T/L3)
ac_current_t: float = 0.0 # A (Phase T/L3)
ac_power_t: float = 0.0 # W (Phase T/L3)

# Line-to-Line Voltages (3-phase only)
ac_voltage_rs: float = 0.0 # V
ac_voltage_st: float = 0.0 # V
ac_voltage_tr: float = 0.0 # V

# Power Flow (storage/hybrid models)
power_to_user: float = 0.0 # W
Expand Down Expand Up @@ -496,12 +512,12 @@ def read_all_data(self) -> Optional[GrowattData]:
# Calculate from strings if not available
data.pv_total_power = data.pv1_power + data.pv2_power + data.pv3_power

# AC Output
# AC Output (generic - will use Phase R via alias for 3-phase)
ac_voltage_addr = self._find_register_by_name('ac_voltage')
ac_current_addr = self._find_register_by_name('ac_current')
ac_power_addr = self._find_register_by_name('ac_power_low')
ac_freq_addr = self._find_register_by_name('ac_frequency')

if ac_voltage_addr:
data.ac_voltage = self._get_register_value(ac_voltage_addr) or 0.0
if ac_current_addr:
Expand All @@ -510,6 +526,51 @@ def read_all_data(self) -> Optional[GrowattData]:
data.ac_power = self._get_register_value(ac_power_addr) or 0.0
if ac_freq_addr:
data.ac_frequency = self._get_register_value(ac_freq_addr) or 0.0

# Three-Phase AC Output (individual phases)
# Phase R
ac_voltage_r_addr = self._find_register_by_name('ac_voltage_r')
ac_current_r_addr = self._find_register_by_name('ac_current_r')
ac_power_r_addr = self._find_register_by_name('ac_power_r_low')
if ac_voltage_r_addr:
data.ac_voltage_r = self._get_register_value(ac_voltage_r_addr) or 0.0
if ac_current_r_addr:
data.ac_current_r = self._get_register_value(ac_current_r_addr) or 0.0
if ac_power_r_addr:
data.ac_power_r = self._get_register_value(ac_power_r_addr) or 0.0

# Phase S
ac_voltage_s_addr = self._find_register_by_name('ac_voltage_s')
ac_current_s_addr = self._find_register_by_name('ac_current_s')
ac_power_s_addr = self._find_register_by_name('ac_power_s_low')
if ac_voltage_s_addr:
data.ac_voltage_s = self._get_register_value(ac_voltage_s_addr) or 0.0
if ac_current_s_addr:
data.ac_current_s = self._get_register_value(ac_current_s_addr) or 0.0
if ac_power_s_addr:
data.ac_power_s = self._get_register_value(ac_power_s_addr) or 0.0

# Phase T
ac_voltage_t_addr = self._find_register_by_name('ac_voltage_t')
ac_current_t_addr = self._find_register_by_name('ac_current_t')
ac_power_t_addr = self._find_register_by_name('ac_power_t_low')
if ac_voltage_t_addr:
data.ac_voltage_t = self._get_register_value(ac_voltage_t_addr) or 0.0
if ac_current_t_addr:
data.ac_current_t = self._get_register_value(ac_current_t_addr) or 0.0
if ac_power_t_addr:
data.ac_power_t = self._get_register_value(ac_power_t_addr) or 0.0

# Line-to-Line Voltages
ac_voltage_rs_addr = self._find_register_by_name('line_voltage_rs')
ac_voltage_st_addr = self._find_register_by_name('line_voltage_st')
ac_voltage_tr_addr = self._find_register_by_name('line_voltage_tr')
if ac_voltage_rs_addr:
data.ac_voltage_rs = self._get_register_value(ac_voltage_rs_addr) or 0.0
if ac_voltage_st_addr:
data.ac_voltage_st = self._get_register_value(ac_voltage_st_addr) or 0.0
if ac_voltage_tr_addr:
data.ac_voltage_tr = self._get_register_value(ac_voltage_tr_addr) or 0.0

# Power Flow (if available - storage/hybrid models)
power_to_user_addr = self._find_register_by_name('power_to_user_low')
Expand Down Expand Up @@ -611,11 +672,15 @@ def write_register(self, register: int, value: int) -> bool:


def _find_register_by_name(self, name: str) -> Optional[int]:
"""Find register address by its name"""
"""Find register address by its name or alias"""
input_regs = self.register_map['input_registers']
for addr, reg_info in input_regs.items():
# Check exact name match
if reg_info['name'] == name:
return addr
# Check alias match (for 3-phase compatibility)
if reg_info.get('alias') == name:
return addr
return None

def _read_energy_breakdown(self, data: GrowattData) -> None:
Expand Down
13 changes: 7 additions & 6 deletions custom_components/growatt_modbus/profiles/mod.py
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Original file line number Diff line number Diff line change
Expand Up @@ -37,12 +37,13 @@
# === AC OUTPUT - THREE PHASE ===
# Grid Frequency (shared across all phases)
37: {'name': 'ac_frequency', 'scale': 0.01, 'unit': 'Hz', 'desc': 'AC output frequency'},

# Phase R (L1) - AC Output
38: {'name': 'ac_voltage_r', 'scale': 0.1, 'unit': 'V', 'desc': 'Phase R AC voltage'},
39: {'name': 'ac_current_r', 'scale': 0.1, 'unit': 'A', 'desc': 'Phase R AC current'},
40: {'name': 'ac_power_r_high', 'scale': 1, 'unit': '', 'pair': 41},
41: {'name': 'ac_power_r_low', 'scale': 1, 'unit': '', 'pair': 40, 'combined_scale': 0.1, 'combined_unit': 'VA'},

# Generic AC aliases (point to Phase R for compatibility with generic code)
# These allow the standard ac_voltage/current/power fields to work
38: {'name': 'ac_voltage_r', 'scale': 0.1, 'unit': 'V', 'desc': 'Phase R AC voltage', 'alias': 'ac_voltage'},
39: {'name': 'ac_current_r', 'scale': 0.1, 'unit': 'A', 'desc': 'Phase R AC current', 'alias': 'ac_current'},
40: {'name': 'ac_power_r_high', 'scale': 1, 'unit': '', 'pair': 41, 'alias': 'ac_power_high'},
41: {'name': 'ac_power_r_low', 'scale': 1, 'unit': '', 'pair': 40, 'combined_scale': 0.1, 'combined_unit': 'VA', 'alias': 'ac_power_low'},

# Phase S (L2) - AC Output
42: {'name': 'ac_voltage_s', 'scale': 0.1, 'unit': 'V', 'desc': 'Phase S AC voltage'},
Expand Down
10 changes: 5 additions & 5 deletions custom_components/growatt_modbus/profiles/sph_tl3.py
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Original file line number Diff line number Diff line change
Expand Up @@ -33,11 +33,11 @@
# AC Grid Frequency
37: {'name': 'ac_frequency', 'scale': 0.01, 'unit': 'Hz'},

# Three-Phase AC Output - Phase R
38: {'name': 'ac_voltage_r', 'scale': 0.1, 'unit': 'V', 'desc': 'Phase R voltage'},
39: {'name': 'ac_current_r', 'scale': 0.1, 'unit': 'A', 'desc': 'Phase R current'},
40: {'name': 'ac_power_r_high', 'scale': 1, 'unit': '', 'pair': 41},
41: {'name': 'ac_power_r_low', 'scale': 1, 'unit': '', 'pair': 40, 'combined_scale': 0.1, 'combined_unit': 'W'},
# Three-Phase AC Output - Phase R (with generic aliases for compatibility)
38: {'name': 'ac_voltage_r', 'scale': 0.1, 'unit': 'V', 'desc': 'Phase R voltage', 'alias': 'ac_voltage'},
39: {'name': 'ac_current_r', 'scale': 0.1, 'unit': 'A', 'desc': 'Phase R current', 'alias': 'ac_current'},
40: {'name': 'ac_power_r_high', 'scale': 1, 'unit': '', 'pair': 41, 'alias': 'ac_power_high'},
41: {'name': 'ac_power_r_low', 'scale': 1, 'unit': '', 'pair': 40, 'combined_scale': 0.1, 'combined_unit': 'W', 'alias': 'ac_power_low'},

# Three-Phase AC Output - Phase S
42: {'name': 'ac_voltage_s', 'scale': 0.1, 'unit': 'V', 'desc': 'Phase S voltage'},
Expand Down