SUTO iTEC S111 power sensor

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
Device model	60	U16	1
Serial No.	70	U32BE	1
APP Version No.	72	U16	1
Date and time	75	U16	1
Slave address	80	U16	1
Baud rate	81	U16	1
Parity	82	U16	1
Stop bit	83	U16	1
Voltage current phase sequence state	220	U16	1
Instruction code	300	U16	1
Instruction parameters 0 01	301	U16	1
Instruction parameters 0 02	302	U16	1
Instruction parameters 1 23	423	U16	1
Configuration instruction code	424	U16	1
Configuration results	425	U16	1
Wiring mode	500	U16	1
Grid frequency	501	U16	1	Hz
Nominal voltage	502	U16	1	V
VT Ratio	503	U32BE	0.0001
CT Ratio	505	U32BE	0.0001
Phase ABC current access type	510	U16	1
Phase ABC Rogowski Coil Pri	511	U32BE	1	A
Phase ABC Rogowski Coil Sec	513	U32BE	0.01	mV
Nominal current of Phase ABC Rogowski Coil	515	U32BE	1	A
Phase ABC VCT Pri	517	U32BE	1	A
Phase ABC VCT Sec	519	U32BE	0.01	mV
Nominal current of Phase ABC VCT	521	U32BE	1	A
Phase N current access type	530	U16	1
Phase N Rogowski Coil Pri	531	U32BE	1	A
Phase N Rogowski Coil Sec	533	U32BE	0.01	mV
Nominal current of Phase N Rogowski Coil	535	U32BE	1	A
Phase N VCT Pri	537	U32BE	1	A
Phase N VCT Sec	539	U32BE	0.01	mV
Nominal current of Phase N VCT	541	U32BE	1	A
Current direction of phase A	550	U16	1
Current direction of phase B	551	U16	1
Current direction of phase C	552	U16	1
Current channel of phase A	553	U16	1
Current channel of phase B	554	U16	1
Current channel of phase C	555	U16	1
Voltage zero drift suppression	600	U16	0.01	%
Current zero drift suppression	601	U16	0.01	%
Current tariff	800	U16	1
Tariff switching mode	801	U16	1
Manual tariff selection	802	U16	1
RTC Ta Start	803	U16	1
RTC Tb Start	806	U16	1
RTC Tc Start	809	U16	1
RTC Td Start	812	U16	1
RTC Te Start	815	U16	1
RTC Tf Start	818	U16	1
RTC Ta tariff select	821	U16	1
RTC Tb tariff select	822	U16	1
RTC Tc tariff select	823	U16	1
RTC Td tariff select	824	U16	1
RTC Te tariff select	825	U16	1
RTC Tf tariff select	826	U16	1
IA	1000	F32BE	1	A
IB	1002	F32BE	1	A
IC	1004	F32BE	1	A
Current Avg	1006	F32BE	1	A
IN	1008	F32BE	1	A
UA	1010	F32BE	1	V
UB	1012	F32BE	1	V
UC	1014	F32BE	1	V
Phase Voltage Avg	1016	F32BE	1	V
U0	1018	F32BE	1	V
UAB	1020	F32BE	1	V
UBC	1022	F32BE	1	V
UCA	1024	F32BE	1	V
Line Voltage Avg	1026	F32BE	1	V
PA	1028	F32BE	1	kW
PB	1030	F32BE	1	kW
PC	1032	F32BE	1	kW
PTotal	1034	F32BE	1	kW
QA	1036	F32BE	1	kVAR
QB	1038	F32BE	1	kVAR
QC	1040	F32BE	1	kVAR
QTotal	1042	F32BE	1	kVAR
SA	1044	F32BE	1	kVA
SB	1046	F32BE	1	kVA
SC	1048	F32BE	1	kVA
STotal	1050	F32BE	1	kVA
PFA	1052	F32BE	1
PFB	1054	F32BE	1
PFC	1056	F32BE	1
PFTotal	1058	F32BE	1
DPFA	1060	F32BE	1
DPFB	1062	F32BE	1
DPFC	1064	F32BE	1
DPFTotal	1066	F32BE	1
FreqA	1068	F32BE	1	Hz
FreqB	1070	F32BE	1	Hz
FreqC	1072	F32BE	1	Hz
FreqTotal	1074	F32BE	1	Hz
EPAImp	2500	I64BE	1	Wh
EPBImp	2504	I64BE	1	Wh
EPCImp	2508	I64BE	1	Wh
EPImp	2512	I64BE	1	Wh
EPAExp	2516	I64BE	1	Wh
EPBExp	2520	I64BE	1	Wh
EPCExp	2524	I64BE	1	Wh
EPExp	2528	I64BE	1	Wh
EQAImp	2532	I64BE	1	VARh
EQBImp	2536	I64BE	1	VARh
EQCImp	2540	I64BE	1	VARh
EQImp	2544	I64BE	1	VARh
EQAExp	2548	I64BE	1	VARh
EQBExp	2552	I64BE	1	VARh
EQCExp	2556	I64BE	1	VARh
EQExp	2560	I64BE	1	VARh
ESA	2564	I64BE	1	VAh
ESB	2568	I64BE	1	VAh
ESC	2572	I64BE	1	VAh
ES	2576	I64BE	1	VAh
EPAImp	2600	U32BE	1	kWh
EPBImp	2602	U32BE	1	kWh
EPCImp	2604	U32BE	1	kWh
EPImp	2606	U32BE	1	kWh
EPAExp	2608	U32BE	1	kWh
EPBExp	2610	U32BE	1	kWh
EPCExp	2612	U32BE	1	kWh
EPExp	2614	U32BE	1	kWh
EQAImp	2616	U32BE	1	kVARh
EQBImp	2618	U32BE	1	kVARh
EQCImp	2620	U32BE	1	kVARh
EQImp	2622	U32BE	1	kVARh
EQAExp	2624	U32BE	1	kVARh
EQBExp	2626	U32BE	1	kVARh
EQCExp	2628	U32BE	1	kVARh
EQExp	2630	U32BE	1	kVARh
ESA	2632	U32BE	1	kVAh
ESB	2634	U32BE	1	kVAh
ESC	2636	U32BE	1	kVAh
ES	2638	U32BE	1	kVAh
ET1	2700	I64BE	1	Wh
ET2	2704	I64BE	1	Wh
ET3	2708	I64BE	1	Wh
ET4	2712	I64BE	1	Wh
ET5	2716	I64BE	1	Wh
ET6	2720	I64BE	1	Wh
ET1	2750	U32BE	1	kWh
ET2	2752	U32BE	1	kWh
ET3	2754	U32BE	1	kWh
ET4	2756	U32BE	1	kWh
ET5	2758	U32BE	1	kWh
ET6	2760	U32BE	1	kWh
DMDMethod	3000	U16	1
DMD block	3001	U16	1	Minute
PDMD Reset Time	3002	U16	1
PADemand	3020	F32BE	1	kW
PAPeak Demand	3022	F32BE	1	kW
PAPeak Demand Date	3024	U16	1
PBDemand	3028	F32BE	1	kW
PBPeak	3030	F32BE	1	kW
PBPeak Demand Date	3032	U16	1
PCDemand	3036	F32BE	1	kW
PCPeak Demand	3038	F32BE	1	kW
PCPeak Demand Date	3040	U16	1
PSUMDemand	3044	F32BE	1	kW
PSUMPeakDemand	3046	F32BE	1	kW
PSUMPeakDemandDate	3048	U16	1
QADemand	3052	F32BE	1	kVar
QAPeak Demand	3054	F32BE	1	kVar
QAPeak Demand Date	3056	U16	1
QBDemand	3060	F32BE	1	kVar
QBPeak Demand	3062	F32BE	1	kVar
QBPeak Demand Date	3064	U16	1
QCDemand	3068	F32BE	1	kVar
QCPeak Demand	3070	F32BE	1	kVar
QCPeak Demand Date	3072	U16	1
QSUMDemand	3076	F32BE	1	kVar
QSUMPeakDemand	3078	F32BE	1	kVar
QSUMPeakDemandDate	3080	U16	1
SADemand	3084	F32BE	1	kVa
SAPeak Demand	3086	F32BE	1	kVa
SAPeak Demand Date	3088	U16	1
SBDemand	3092	F32BE	1	kVa
SBPeak Demand	3094	F32BE	1	kVa
SBPeak Demand Date	3096	U16	1
SCDemand	3100	F32BE	1	kVa
SCPeak Demand	3102	F32BE	1	kVa
SCPeak Demand Date	3104	U16	1
SSUMDemand	3108	F32BE	1	kVa
SSUMPeakDemand	3110	F32BE	1	kVa
SSUMPeakDemandDate	3112	U16	1
IATHD	4000	F32BE	1	%
IBTHD	4002	F32BE	1	%
ICTHD	4004	F32BE	1	%
IATOHD	4006	F32BE	1	%
IBTOHD	4008	F32BE	1	%
ICTOHD	4010	F32BE	1	%
IATEHD	4012	F32BE	1	%
IBTEHD	4014	F32BE	1	%
ICTEHD	4016	F32BE	1	%
IAHD1	4018	F32BE	1	%
IBHD1	4020	F32BE	1	%
ICHD1	4022	F32BE	1	%
IAHD50	4312	F32BE	1	%
IBHD50	4314	F32BE	1	%
ICHD50	4316	F32BE	1	%
IAHDV1	4400	F32BE	1	A
IBHDV1	4402	F32BE	1	A
ICHDV1	4404	F32BE	1	A
IAHDV50	4694	F32BE	1	A
IBHDV50	4696	F32BE	1	A
ICHDV50	4698	F32BE	1	A
UATHD	5000	F32BE	1	%
UBTHD	5002	F32BE	1	%
UCTHD	5004	F32BE	1	%
UATOHD	5006	F32BE	1	%
UBTOHD	5008	F32BE	1	%
UCTOHD	5010	F32BE	1	%
UATEHD	5012	F32BE	1	%
UBTEHD	5014	F32BE	1	%
UCTEHD	5016	F32BE	1	%
UAHDV1	5018	F32BE	1	%
UBHDV1	5020	F32BE	1	%
UCHDV1	5022	F32BE	1	%
UAHD50	5312	F32BE	1	%
UBHD50	5314	F32BE	1	%
UCHD50	5316	F32BE	1	%
UAHDV1	5400	F32BE	1	V
UBHDV1	5402	F32BE	1	V
UCHDV1	5404	F32BE	1	V
UAHDV50	5694	F32BE	1	V
UBHDV50	5696	F32BE	1	V
UCHDV50	5698	F32BE	1	V
IA Max	6000	F32BE	1	A
IB Max	6002	F32BE	1	A
IC Max	6004	F32BE	1	A
IAVG Max	6006	F32BE	1	A
IN Max	6008	F32BE	1	A
IA Min	6010	F32BE	1	A
IB Min	6012	F32BE	1	A
IC Min	6014	F32BE	1	A
IAVGMin	6016	F32BE	1	A
IN Min	6018	F32BE	1	A
UA Max	6020	F32BE	1	V
UB Max	6022	F32BE	1	V
UC Max	6024	F32BE	1	V
Phase UAVGMax	6026	F32BE	1	V
UA Min	6030	F32BE	1	V
UB Min	6032	F32BE	1	V
UC Min	6034	F32BE	1	V
UAVGMin	6036	F32BE	1	V
UAB Max	6040	F32BE	1	V
UBC Max	6042	F32BE	1	V
UCA Max	6044	F32BE	1	V
LineUAVG Max	6046	F32BE	1	V
UAB Min	6050	F32BE	1	V
UBC Min	6052	F32BE	1	V
UCA Min	6054	F32BE	1	V
LineUAVG Min	6056	F32BE	1	V
PA Max	6060	F32BE	1	kW
PB Max	6062	F32BE	1	kW
PC Max	6064	F32BE	1	kW
PSUMMax	6066	F32BE	1	kW
PA Min	6070	F32BE	1	kW
PB Min	6072	F32BE	1	kW
PC Min	6074	F32BE	1	kW
PSUMMin	6076	F32BE	1	kW
QA Max	6080	F32BE	1	kVar
QB Max	6082	F32BE	1	kVar
QC Max	6084	F32BE	1	kVar
QSUMMax	6086	F32BE	1	kVar
QA Min	6090	F32BE	1	kVar
QB Min	6092	F32BE	1	kVar
QC Min	6094	F32BE	1	kVar
QSUMMin	6096	F32BE	1	kVar
SA Max	6100	F32BE	1	kVa
SB Max	6102	F32BE	1	kVa
SC Max	6104	F32BE	1	kVa
SSUMMax	6106	F32BE	1	kVa
SA Min	6110	F32BE	1	kVa
SB Min	6112	F32BE	1	kVa
SC Min	6114	F32BE	1	kVa
SSUMMin	6116	F32BE	1	kVa
Current negative sequence unbalancedness	7000	F32BE	1	%
Current zero sequence unbalancedness	7002	F32BE	1	%
Voltage negative sequence unbalancedness	7004	F32BE	1	%
Voltage zero sequence unbalancedness	7006	F32BE	1	%
KFIA	8000	F32BE	1
KFIB	8002	F32BE	1
KFIC	8004	F32BE	1
UA	8100	F32BE	1
UB	8102	F32BE	1
UC	8104	F32BE	1
IA	8106	F32BE	1
IB	8108	F32BE	1
IC	8110	F32BE	1
UIA	8112	F32BE	1
UIB	8114	F32BE	1
UIC	8116	F32BE	1

link settings as documented (unverified): RTU; default 9600 8N1; unit ID 1; FC 03,16; Parameters need to be set via the meter interface before performing Modbus/RTU communication.

bench facts as documented (unverified)

terminals	A, B
connector	RJ12
wiring notes	RS-485 communication port
max registers/read	125
model register	60
serial register	70
firmware register	72
doc revision	2025-2

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

confirmed: comms defaults (baud rate 9600, unit ID 1, parity N, stop bits 1) — confirmed by SUTO iTEC S111 Modbus Register Table
confirmed: identification registers (firmware @ 72, model @ 60, serial @ 70) — confirmed by SUTO iTEC S111 Modbus Register Table
confirmed: register map addresses (phase_a_current @ 1000, phase_a_voltage @ 1010, total_active_power @ 1034, phase_a_positive_active_energy @ 2600) — confirmed by SUTO iTEC S111 Modbus Register Table

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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