manufacturer: schneider model: electric-em3502-em3550 device: electric-em3502-em3550 category: Altro protocol: modbus version: v1 firmware: null verification: IMPORTED isDemo: false source: title: schneider electric-em3502-em3550 — modbus-database (registers.json) url: https://www.aggsoft.com/serial-data-logger/tutorials/modbus-data-logging/schneider-electric-em3502-em3550.htm documentRef: null revision: null generatedAt: 2026-09-21T13:16:24.584Z registers: - address: "2" addressNumeric: 2 signal: total_instantaneous_real_power_3_phase_total name: Total-instantaneous-real-power-(3-phase-total) description: Total-instantaneous-real-power-(3-phase-total) functionCode: 3 datatype: uint16 length: 1 scale: 1 offset: 0 unit: kW access: READ endianness: null group: null notes: null - address: "3" addressNumeric: 3 signal: total_instantaneous_reactive_power_3_phase_total name: Total-instantaneous-reactive-power-(3-phase-total) description: Total-instantaneous-reactive-power-(3-phase-total) functionCode: 3 datatype: uint16 length: 1 scale: 1 offset: 0 unit: kVAR access: READ endianness: null group: null notes: null - address: "4" addressNumeric: 4 signal: total_instantaneous_apparent_power_3_phase_total name: Total-instantaneous-apparent-power-(3-phase-total) description: Total-instantaneous-apparent-power-(3-phase-total) functionCode: 3 datatype: uint16 length: 1 scale: 1 offset: 0 unit: kVA access: READ endianness: null group: null notes: null - address: "5" addressNumeric: 5 signal: total_power_factor_total_kw_total_kva name: Total-power-factor-(total-kw-/-total-kva) description: Total-power-factor-(total-kw-/-total-kva) functionCode: 3 datatype: uint16 length: 1 scale: 1 offset: 0 unit: Ratio access: READ endianness: null group: null notes: null - address: "6" addressNumeric: 6 signal: voltage_l_l_average_of_3_phases name: Voltage,-L-l,-average-of-3-phases description: Voltage,-L-l,-average-of-3-phases functionCode: 3 datatype: uint16 length: 1 scale: 1 offset: 0 unit: Volt access: READ endianness: null group: null notes: null - address: "7" addressNumeric: 7 signal: voltage_l_n_average_of_3_phases name: Voltage,-L-n,-average-of-3-phases description: Voltage,-L-n,-average-of-3-phases functionCode: 3 datatype: uint16 length: 1 scale: 1 offset: 0 unit: Volt access: READ endianness: null group: null notes: null - address: "8" addressNumeric: 8 signal: current_average_of_3_phases name: Current,-average-of-3-phases description: Current,-average-of-3-phases functionCode: 3 datatype: uint16 length: 1 scale: 1 offset: 0 unit: Amp access: READ endianness: null group: null notes: null - address: "9" addressNumeric: 9 signal: real_power_phase_a name: Real-power,-phase-A description: Real-power,-phase-A functionCode: 3 datatype: uint16 length: 1 scale: 1 offset: 0 unit: kW access: READ endianness: null group: null notes: null - address: "10" addressNumeric: 10 signal: real_power_phase_b name: Real-power,-phase-B description: Real-power,-phase-B functionCode: 3 datatype: uint16 length: 1 scale: 1 offset: 0 unit: kW access: READ endianness: null group: null notes: null - address: "11" addressNumeric: 11 signal: real_power_phase_c name: Real-power,-phase-C description: Real-power,-phase-C functionCode: 3 datatype: uint16 length: 1 scale: 1 offset: 0 unit: kW access: READ endianness: null group: null notes: null - address: "12" addressNumeric: 12 signal: power_factor_phase_a name: Power-factor,-phase-A description: Power-factor,-phase-A functionCode: 3 datatype: uint16 length: 1 scale: 1 offset: 0 unit: Ratio access: READ endianness: null group: null notes: null - address: "13" addressNumeric: 13 signal: power_factor_phase_b name: Power-factor,-phase-B description: Power-factor,-phase-B functionCode: 3 datatype: uint16 length: 1 scale: 1 offset: 0 unit: Ratio access: READ endianness: null group: null notes: null - address: "14" addressNumeric: 14 signal: power_factor_phase_c name: Power-factor,-phase-C description: Power-factor,-phase-C functionCode: 3 datatype: uint16 length: 1 scale: 1 offset: 0 unit: Ratio access: READ endianness: null group: null notes: null - address: "15" addressNumeric: 15 signal: voltage_phase_a_b name: Voltage,-phase-A-B description: Voltage,-phase-A-B functionCode: 3 datatype: uint16 length: 1 scale: 1 offset: 0 unit: Volt access: READ endianness: null group: null notes: null - address: "16" addressNumeric: 16 signal: voltage_phase_b_c name: Voltage,-phase-B-C description: Voltage,-phase-B-C functionCode: 3 datatype: uint16 length: 1 scale: 1 offset: 0 unit: Volt access: READ endianness: null group: null notes: null - address: "17" addressNumeric: 17 signal: voltage_phase_a_c name: Voltage,-phase-A-C description: Voltage,-phase-A-C functionCode: 3 datatype: uint16 length: 1 scale: 1 offset: 0 unit: Volt access: READ endianness: null group: null notes: null - address: "18" addressNumeric: 18 signal: voltage_phase_a_n name: Voltage,-phase-A-N description: Voltage,-phase-A-N functionCode: 3 datatype: uint16 length: 1 scale: 1 offset: 0 unit: Volt access: READ endianness: null group: null notes: null - address: "19" addressNumeric: 19 signal: voltage_phase_b_n name: Voltage,-phase-B-N description: Voltage,-phase-B-N functionCode: 3 datatype: uint16 length: 1 scale: 1 offset: 0 unit: Volt access: READ endianness: null group: null notes: null - address: "20" addressNumeric: 20 signal: voltage_phase_c_n name: Voltage,-phase-C-N description: Voltage,-phase-C-N functionCode: 3 datatype: uint16 length: 1 scale: 1 offset: 0 unit: Volt access: READ endianness: null group: null notes: null - address: "21" addressNumeric: 21 signal: current_instantaneous_phase_a name: Current,-instantaneous,-phase-A description: Current,-instantaneous,-phase-A functionCode: 3 datatype: uint16 length: 1 scale: 1 offset: 0 unit: Amp access: READ endianness: null group: null notes: null - address: "22" addressNumeric: 22 signal: current_instantaneous_phase_b name: Current,-instantaneous,-phase-B description: Current,-instantaneous,-phase-B functionCode: 3 datatype: uint16 length: 1 scale: 1 offset: 0 unit: Amp access: READ endianness: null group: null notes: null - address: "23" addressNumeric: 23 signal: current_instantaneous_phase_c name: Current,-instantaneous,-phase-C description: Current,-instantaneous,-phase-C functionCode: 3 datatype: uint16 length: 1 scale: 1 offset: 0 unit: Amp access: READ endianness: null group: null notes: null - address: "25" addressNumeric: 25 signal: frequency_derived_from_phase_a name: Frequency-(derived-from-phase-a) description: Frequency-(derived-from-phase-a) functionCode: 3 datatype: uint16 length: 1 scale: 1 offset: 0 unit: Hz access: READ endianness: null group: null notes: null - address: "26" addressNumeric: 26 signal: apparent_energy_consumption_msr name: Apparent-energy-consumption-(msr) description: Apparent-energy-consumption-(msr) functionCode: 3 datatype: uint32 length: 2 scale: 1 offset: 0 unit: KVAh access: READ endianness: null group: null notes: null - address: "28" addressNumeric: 28 signal: reactive_energy_consumption_msr name: Reactive-energy-consumption-(msr) description: Reactive-energy-consumption-(msr) functionCode: 3 datatype: uint32 length: 2 scale: 1 offset: 0 unit: KVARh access: READ endianness: null group: null notes: null - address: "30" addressNumeric: 30 signal: apparent_power_phase_a name: Apparent-power,-phase-A description: Apparent-power,-phase-A functionCode: 3 datatype: uint16 length: 1 scale: 1 offset: 0 unit: kVA access: READ endianness: null group: null notes: null - address: "31" addressNumeric: 31 signal: apparent_power_phase_b name: Apparent-power,-phase-B description: Apparent-power,-phase-B functionCode: 3 datatype: uint16 length: 1 scale: 1 offset: 0 unit: kVA access: READ endianness: null group: null notes: null - address: "32" addressNumeric: 32 signal: apparent_power_phase_c name: Apparent-power,-phase-C description: Apparent-power,-phase-C functionCode: 3 datatype: uint16 length: 1 scale: 1 offset: 0 unit: kVA access: READ endianness: null group: null notes: null - address: "33" addressNumeric: 33 signal: reactive_power_phase_a name: Reactive-power,-phase-A description: Reactive-power,-phase-A functionCode: 3 datatype: uint16 length: 1 scale: 1 offset: 0 unit: kVAR access: READ endianness: null group: null notes: null - address: "34" addressNumeric: 34 signal: reactive_power_phase_b name: Reactive-power,-phase-B description: Reactive-power,-phase-B functionCode: 3 datatype: uint16 length: 1 scale: 1 offset: 0 unit: kVAR access: READ endianness: null group: null notes: null - address: "35" addressNumeric: 35 signal: reactive_power_phase_c name: Reactive-power,-phase-C description: Reactive-power,-phase-C functionCode: 3 datatype: uint16 length: 1 scale: 1 offset: 0 unit: kVAR access: READ endianness: null group: null notes: null - address: "36" addressNumeric: 36 signal: total_real_power_present_demand name: Total-real-power-present-demand description: Total-real-power-present-demand functionCode: 3 datatype: uint16 length: 1 scale: 1 offset: 0 unit: kW access: READ endianness: null group: null notes: null - address: "37" addressNumeric: 37 signal: total_reactive_power_present_demand name: Total-reactive-power-present-demand description: Total-reactive-power-present-demand functionCode: 3 datatype: uint16 length: 1 scale: 1 offset: 0 unit: kVAR access: READ endianness: null group: null notes: null - address: "38" addressNumeric: 38 signal: total_apparent_power_present_demand name: Total-apparent-power-present-demand description: Total-apparent-power-present-demand functionCode: 3 datatype: uint16 length: 1 scale: 1 offset: 0 unit: kVA access: READ endianness: null group: null notes: null - address: "39" addressNumeric: 39 signal: total_real_power_max_demand name: Total-real-power-max.-demand description: Total-real-power-max.-demand functionCode: 3 datatype: uint16 length: 1 scale: 1 offset: 0 unit: kW access: READ endianness: null group: null notes: null - address: "40" addressNumeric: 40 signal: total_reactive_power_max_demand name: Total-reactive-power-max.-demand description: Total-reactive-power-max.-demand functionCode: 3 datatype: uint16 length: 1 scale: 1 offset: 0 unit: kVAR access: READ endianness: null group: null notes: null - address: "41" addressNumeric: 41 signal: total_apparent_power_max_demand name: Total-apparent-power-max.-demand description: Total-apparent-power-max.-demand functionCode: 3 datatype: uint16 length: 1 scale: 1 offset: 0 unit: kVA access: READ endianness: null group: null notes: null - address: "42" addressNumeric: 42 signal: pulse_counter_1_real_energy name: Pulse-counter-1-(real-energy) description: Pulse-counter-1-(real-energy) functionCode: 3 datatype: uint32 length: 2 scale: 1 offset: 0 unit: null access: READ endianness: null group: null notes: null - address: "44" addressNumeric: 44 signal: pulse_counter_2_reactive_energy name: Pulse-counter-2-(reactive-energy) description: Pulse-counter-2-(reactive-energy) functionCode: 3 datatype: uint32 length: 2 scale: 1 offset: 0 unit: null access: READ endianness: null group: null notes: null - address: "46" addressNumeric: 46 signal: real_energy_consumption_phase_a name: Real-energy-consumption-phase-A description: Real-energy-consumption-phase-A functionCode: 3 datatype: uint32 length: 2 scale: 1 offset: 0 unit: kWh access: READ endianness: null group: null notes: null - address: "48" addressNumeric: 48 signal: real_energy_consumption_phase_b name: Real-energy-consumption-phase-B description: Real-energy-consumption-phase-B functionCode: 3 datatype: uint32 length: 2 scale: 1 offset: 0 unit: kWh access: READ endianness: null group: null notes: null - address: "50" addressNumeric: 50 signal: real_energy_consumption_phase_c name: Real-energy-consumption-phase-C description: Real-energy-consumption-phase-C functionCode: 3 datatype: uint32 length: 2 scale: 1 offset: 0 unit: kWh access: READ endianness: null group: null notes: null - address: "129" addressNumeric: 129 signal: single_phase_a_n name: Single-phase:-A-+-N description: Single-phase:-A-+-N functionCode: 3 datatype: uint16 length: 1 scale: 1 offset: 0 unit: null access: READ endianness: null group: null notes: null - address: "130" addressNumeric: 130 signal: ct_ratio_primary name: Ct-ratio-primary description: Ct-ratio-primary functionCode: 3 datatype: uint16 length: 1 scale: 1 offset: 0 unit: Amps access: READ endianness: null group: null notes: null - address: "131" addressNumeric: 131 signal: ct_ratio_secondary_interface_1_or_1_3_v_may_not_be_user_configurable name: Ct-ratio-secondary-interface-(1-or-1/3-v,-may-not-be-user-configurable) description: Ct-ratio-secondary-interface-(1-or-1/3-v,-may-not-be-user-configurable) functionCode: 3 datatype: uint16 length: 1 scale: 1 offset: 0 unit: null access: READ endianness: null group: null notes: null - address: "132" addressNumeric: 132 signal: pt_ratio_the_meter_scales_this_value_by_100_i_e_entering_200_yields_a_potential_transformer_ratio_of_2_1_the_default_is_100_1_00_1_which_is_with_no_pt_attached_set_this_value_before_setting_the_system_voltage_below name: Pt-ratio:-the-meter-scales-this-value-by-100-(i.e.-entering-200-yields-a-potential-transformer-ratio-of-2:1).-the-default-is-100-(1.00:1),-which-is-with-no-pt-attached.-set-this-value-before-setting-the-system-voltage-(below) description: Pt-ratio:-the-meter-scales-this-value-by-100-(i.e.-entering-200-yields-a-potential-transformer-ratio-of-2:1).-the-default-is-100-(1.00:1),-which-is-with-no-pt-attached.-set-this-value-before-setting-the-system-voltage-(below) functionCode: 3 datatype: uint16 length: 1 scale: 1 offset: 0 unit: null access: READ endianness: null group: null notes: null - address: "133" addressNumeric: 133 signal: system_voltage_this_voltage_is_line_to_line_except_for_system_type_10_which_is_line_to_neutral_the_meter_uses_this_value_to_calculate_the_full_scale_power_for_the_analog_outputs_and_pulse_configuration_below_and_as_full_scale_for_phase_loss_register_142_the_meter_will_refuse_voltages_that_are_outside_the_range_of_82_660_volts_when_divided_by_the_pt_ratio_above name: System-voltage:-this-voltage-is-line-to-line,-except-for-system-type-10-which-is-line-to-neutral.-the-meter-uses-this-value-to-calculate-the-full-scale-power-for-the-analog-outputs-and-pulse-configuration-(below),-and-as-full-scale-for-phase-loss-(register-142).-the-meter-will-refuse-voltages-that-are-outside-the-range-of-82-660-volts-when-divided-by-the-pt-ratio-(above) description: System-voltage:-this-voltage-is-line-to-line,-except-for-system-type-10-which-is-line-to-neutral.-the-meter-uses-this-value-to-calculate-the-full-scale-power-for-the-analog-outputs-and-pulse-configuration-(below),-and-as-full-scale-for-phase-loss-(register-142).-the-meter-will-refuse-voltages-that-are-outside-the-range-of-82-660-volts-when-divided-by-the-pt-ratio-(above) functionCode: 3 datatype: uint16 length: 1 scale: 1 offset: 0 unit: null access: READ endianness: null group: null notes: null - address: "134" addressNumeric: 134 signal: theoretical_maximum_system_power_this_read_only_value_is_the_theoretical_maximum_power_the_meter_can_expect_to_see_on_a_service_this_value_is_100_of_scale_on_the_analog_output_0_5_vdc_or_4_20_ma_if_equipped_the_meter_recalculates_this_value_if_the_user_changes_the_ct_size_system_type_or_system_voltage_this_integer_value_has_the_same_scale_as_other_integer_power_registers_see_register_140_for_power_scaling name: Theoretical-maximum-system-power:-this-read-only-value-is-the-theoretical-maximum-power-the-meter-can-expect-to-see-on-a-service.-this-value-is-100%-of-scale-on-the-analog-output-(0-5-vdc-or-4-20-ma),-if-equipped.-the-meter-recalculates-this-value-if-the-user-changes-the-ct-size,-system-type,-or-system-voltage.-this-integer-value-has-the-same-scale-as-other-integer-power-registers-(see-register-140-for-power-scaling) description: Theoretical-maximum-system-power:-this-read-only-value-is-the-theoretical-maximum-power-the-meter-can-expect-to-see-on-a-service.-this-value-is-100%-of-scale-on-the-analog-output-(0-5-vdc-or-4-20-ma),-if-equipped.-the-meter-recalculates-this-value-if-the-user-changes-the-ct-size,-system-type,-or-system-voltage.-this-integer-value-has-the-same-scale-as-other-integer-power-registers-(see-register-140-for-power-scaling) functionCode: 3 datatype: uint16 length: 1 scale: 1 offset: 0 unit: kW access: READ endianness: null group: null notes: null - address: "136" addressNumeric: 136 signal: display_units_0_iec_u_v_p_q_s_1_ieee_default_vll_vln_w_var_va name: Display-units:-0-=-iec-(u,-v,-p,-q,-s),-1-=-ieee-(default:-vll,-vln,-w,-var,-va) description: Display-units:-0-=-iec-(u,-v,-p,-q,-s),-1-=-ieee-(default:-vll,-vln,-w,-var,-va) functionCode: 3 datatype: uint16 length: 1 scale: 1 offset: 0 unit: null access: READ endianness: null group: null notes: null - address: "137" addressNumeric: 137 signal: scale_factors_note_these_registers_contain_a_signed_integer_that_scales_the_corresponding_integer_registers_floating_point_registers_are_not_scaled_scaling_is_recalculated_when_the_meter_configuration_is_changed name: Scale-factors-note:-these-registers-contain-a-signed-integer-that-scales-the-corresponding-integer-registers.-floating-point-registers-are-not-scaled.-scaling-is-recalculated-when-the-meter-configuration-is-changed description: Scale-factors-note:-these-registers-contain-a-signed-integer-that-scales-the-corresponding-integer-registers.-floating-point-registers-are-not-scaled.-scaling-is-recalculated-when-the-meter-configuration-is-changed functionCode: 3 datatype: int16 length: 1 scale: 1 offset: 0 unit: null access: READ endianness: null group: null notes: null