DENT PowerScout 3/18 submeter

Register map(s) for this device, with a note of how far each has been checked. Addresses are 0-based, as on the wire. Scale and byte order are confirmed only at the hardware-verified rung.

coherence-checked

Round-trips through a real Modbus stack with no overlapping addresses and a word-order-sensitive codec — the map is internally coherent and wire-decodable. Does NOT prove byte-order or scaling match a real device: the emulator is seeded from the map's own types, so a uniformly wrong byte-order still round-trips. Only hardware-verified confirms byte-order/scale on the wire.

point	address (0-based)	type	scale	unit
System Total True Energy, LSW	0	U16	1	kWh
System Total True Energy, MSW	1	U16	1	kWh
System Total True Power	2	U16	1	kW
System Total Reactive Power	3	U16	1	kVAR
System Total Apparent Power	4	U16	1	kVA
System Total Apparent Power Factor	5	U16	1	PF
Average Line to Line Voltage	6	U16	1	Volts
Average Line to Neutral Voltage	7	U16	1	Volts
Sum of Line Currents	8	U16	1	Amps
L1 Phase True Power	9	U16	1	kW
L2 Phase True Power	10	U16	1	kW
L3 Phase True Power	11	U16	1	kW
L1 Phase Apparent Power Factor	12	U16	1	aPF
L2 Phase Apparent Power Factor	13	U16	1	aPF
L3 Phase Apparent Power Factor	14	U16	1	aPF
L1 - L2 Voltage	15	U16	1	Volts
L2 - L3 Voltage	16	U16	1	Volts
L3 - L1 Voltage	17	U16	1	Volts
L1 - Neutral Voltage	18	U16	1	Volts
L2 - Neutral Voltage	19	U16	1	Volts
L3 - Neutral Voltage	20	U16	1	Volts
L1 Current	21	U16	1	Amps
L2 Current	22	U16	1	Amps
L3 Current	23	U16	1	Amps
System Average Demand	24	U16	1	kW
System Minimum Inst. Demand	25	U16	1	kW
System Maximum Inst. Demand	26	U16	1	kW
Synchronize Register	128	U16	1
kwh_system_lsw	4000	U16	1	kWh
kwh_system_msw	4001	U16	1	kWh
kw_system	4002	I16	1	kW
kw_demand_system_max	4003	I16	1	kW
kw_demand_system_now	4004	I16	1	kW
kw_system_max	4005	I16	1	kW
kw_system_min	4006	I16	1	kW
kvarh_system_lsw	4007	U16	1	kVARh
kvarh_system_msw	4008	U16	1	kVARh
kvar_system	4009	I16	1	kVAR
kvah_system_lsw	4010	U16	1	kVAh
kvah_system_msw	4011	U16	1	kVAh
kva_system	4012	U16	1	kVA
displacement_pf_system	4013	I16	1	PF
apparent_pf_system	4014	I16	1	PF
amps_system_avg	4015	U16	1	A
volts_line_to_line_avg	4016	U16	1	V
volts_line_to_neutral_avg	4017	U16	1	V
volts_l1_to_l2	4018	U16	1	V
volts_l2_to_l3	4019	U16	1	V
volts_l1_to_l3	4020	U16	1	V
line_frequency	4021	U16	1	Hz
kwh_l1_lsw	4022	U16	1	kWh
kwh_l1_msw	4023	U16	1	kWh
kwh_l2_lsw	4024	U16	1	kWh
kwh_l2_msw	4025	U16	1	kWh
kwh_l3_lsw	4026	U16	1	kWh
kwh_l3_msw	4027	U16	1	kWh
kw_l1	4028	I16	1	kW
kw_l2	4029	I16	1	kW
kw_l3	4030	I16	1	kW
kvarh_l1_lsw	4031	U16	1	kVARh
kvarh_l1_msw	4032	U16	1	kVARh
kvarh_l2_lsw	4033	U16	1	kVARh
kvarh_l2_msw	4034	U16	1	kVARh
kvarh_l3_lsw	4035	U16	1	kVARh
kvarh_l3_msw	4036	U16	1	kVARh
kvar_l1	4037	I16	1	kVAR
kvar_l2	4038	I16	1	kVAR
kvar_l3	4039	I16	1	kVAR
kvah_l1_lsw	4040	U16	1	kVAh
kvah_l1_msw	4041	U16	1	kVAh
kvah_l2_lsw	4042	U16	1	kVAh
kvah_l2_msw	4043	U16	1	kVAh
kvah_l3_lsw	4044	U16	1	kVAh
kvah_l3_msw	4045	U16	1	kVAh
kva_l1	4046	U16	1	kVA
kva_l2	4047	U16	1	kVA
kva_l3	4048	U16	1	kVA
displacement_pf_l1	4049	I16	1	PF
displacement_pf_l2	4050	I16	1	PF
displacement_pf_l3	4051	I16	1	PF
apparent_pf_l1	4052	I16	1	PF
apparent_pf_l2	4053	I16	1	PF
apparent_pf_l3	4054	I16	1	PF
amps_l1	4055	U16	1	A
amps_l2	4056	U16	1	A
amps_l3	4057	U16	1	A
volts_l1_to_neutral	4058	U16	1	V
Individual Phase to Neutral Voltages L2	4059	U16	1	V
Individual Phase to Neutral Voltages L3	4060	U16	1	V
Seconds since KWH register was reset LSW	4061	U16	1	s
Seconds since KWH register was reset MSW	4062	U16	1	s
Volts Scalar (not implemented)	4064	U16	1
Amps Scalar (not implemented)	4065	U16	1
Firmware Major Revision	4068	U16	1
Firmware Minor Revision	4069	U16	1
Model Name 10 bytes (ASCII Alpha-Numeric) 1st 2 bytes	4200	U16	1
Model 2	4201	U16	1
Model 3	4202	U16	1
Model 4	4203	U16	1
Model Number last 2 bytes	4204	U16	1
Serial Number 10 bytes (ASCII Alpha-Numeric) 1st 2 bytes	4205	U16	1
Serial 2	4206	U16	1
Serial 3	4207	U16	1
Serial 4	4208	U16	1
Serial Number last 2 bytes	4209	U16	1
CT Value (x2)	4300	U16	1	A
Data Scalar	4301	U16	1
Demand Window Size	4302	U16	1	Minutes

link settings as documented (unverified): RTU; default 9600 8N1; unit ID 1; FC 03,06,17; Up to 41 PowerScout 18 meters (249 PowerScout 3 meters) may be connected to a single RTU.

⚠ CAUTION: This METER may contain life threatening voltages. QUALIFIED PERSONNEL MUST Disconnect all high voltage wiring before USING or servicing the METER. — Starkest reads only; we never write a control register.

bench facts as documented (unverified)

terminals	connector for four voltage wire leads (L1, L2, L3, Neutral), connectors for up to 18 CTs (PS18) or 3 CTs (PS3), three wire connector for RS-485 Modbus link
A/B polarity	The CTs are insensitive to orientation
connector	three wire connector for the RS-485 Modbus link
isolation	double insulation (IEC 536 Class II)
protocol notes	Each PowerScout 18 uses 6 Modbus addresses (A through F), each one higher than the previous.
model register	4200
serial register	4205
firmware register	4068
identification notes	Model and Serial numbers are 10 bytes ASCII Alpha-Numeric
power	From L1 Phase to L2 Phase. PS 18: 5 Watts typ. @ 600VAC, 2.5W typ. @ 80VAC; non-user replaceable .5 Amp Internal fuse protection.
environment	Operating Temperature: -7 to +60 oC (20 to 140 oF), Humidity: 5% to 95% non-condensing
accuracy	Better Than 1% (<0.5% typical) for V, A, kW, kVAR, kVA, PF
certifications	Conforms to UL Std 61010-1, Certified to CSA Std C22.2 No. 61010-1
doc revision	October 25, 2010

field reports — community-sourced, unverified (checked 2026-06-11)

Downloading readings of multiple loads over the fixed 9600 bps baud rate of the legacy DENT meters can cause slight variations in timestamp synchronization due to bandwidth limitations. [source]
confirmed: comms.baud_rates: [9600] — confirmed by the User's Manual (October 25, 2010) which states 'Communication Rate: 9600 baud' and independent research noting the fixed 9600 bps rate of the legacy PowerScout 18.
confirmed: comms.default_unit_id: 1 — confirmed by the User's Manual stating 'The default factory setting is hex 01 (Modbus Address Decimal 01)'.
confirmed: comms.framing: ['RTU'] — confirmed by the User's Manual stating 'Modbus Framing: RTU (binary)'.
confirmed: comms.function_codes: [3, 6, 17] — confirmed by the User's Manual stating 'The Modbus commands that are used by the PowerScout meter are the Read Holding Register command [03], the Write (Preset) Single Register command [06] and the Return Slave ID command [17 / 0x11]'.
confirmed: facts.accuracy: 'Better Than 1% (<0.5% typical) for V, A, kW, kVAR, kVA, PF' — confirmed by the product specifications in the User's Manual.
confirmed: facts.certifications: 'Conforms to UL Std 61010-1, Certified to CSA Std C22.2 No. 61010-1' — confirmed by the Safety Summary in the User's Manual.
confirmed: facts.control_warning: 'CAUTION: This METER may contain life threatening voltages. QUALIFIED PERSONNEL MUST Disconnect all high voltage wiring before USING or servicing the METER.' — confirmed by the Safety Summary in the User's Manual.
confirmed: facts.doc_revision: 'October 25, 2010' — confirmed by the cover page of the User's Manual.

The trust ladder

Each rung states what it proved and what it did not. Gray until proven; green is earned by hardware only.

generated — A prompt produced it. Unproven — anyone can regenerate this.
structure-verified — Decode path is structurally sound (addresses, widths, finite values). Does NOT prove word order or scaling.
coherence-checked — Round-trips through a real Modbus stack with no overlapping addresses and a word-order-sensitive codec — the map is internally coherent and wire-decodable. Does NOT prove byte-order or scaling match a real device: the emulator is seeded from the map's own types, so a uniformly wrong byte-order still round-trips. Only hardware-verified confirms byte-order/scale on the wire.
hardware-verified (software-key) x1 — Matched a real device with operator-attested readings as ground truth — the only rung that confirms word order + scaling on the wire.

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