{ "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": "2026-09-21T14:11:12.450Z", "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 } ] }