Huawei SUN2000-100KTL-M2

Commercial PV inverter

The SUN2000-100KTL-M2 communicates with its plant logger over RS485 or MBUS. On a site commissioned with SmartLogger3000, Huawei documents a Modbus TCP handoff for monitoring. Start with the logger identity and aggregate plant-power read below; keep individual inverter output and grid-meter import/export separate.

Huawei SUN2000-100KTL-M2 commercial inverter
  • RS485
  • Modbus RTU
  • Modbus TCP

Commercial PV inverter

Compatibility

Documented monitoring through SmartLogger3000

Huawei’s SmartLogger map and user manual provide a concrete northbound TCP monitoring start. This route requires an installed SmartLogger3000, not an assumed inverter Ethernet service or optional Dongle endpoint. The example reads the logger’s aggregate inverter/PCS output.

Use Issue 43 as a best-effort starting map and compare decoded values with the installed logger WebUI. Preserve the commissioned inverter/meter buses and plant controller. Physical Edge polling has not been tested; this guide includes no control commands.

The M2 plant uses an installed SmartLogger3000 and an approved local Modbus TCP monitoring connection

  • M-Bus
  • Edge
  • Platforms
Commercial PV inverter
Interface
Gateway
Edge
Output
SUN2000-100KTL-M2SUN2000-100KTL-M2
Huawei SmartLogger3000Commissioned plant logger and TCP monitoring endpoint
ZGW-20 GatewayHosts Edge locally
EpiSensor EdgeModbus client + register map
Customer platformMQTT · API · files
Existing RS485 or MBUS plant link
Ethernet Modbus TCP
Runs locally
Optional onward data
Keep the inverter connected to its commissioned logger. Connect the monitoring reader on the site network and use the configured SmartLogger listening port. Preserve RS485-2 meter wiring and plant-control ownership. The customer-platform output is optional; Edge remains the local system of record.

Models

Download
ModelsInterfaceRoute into Edge
SUN2000-100KTL-M2100 kW nameplate, ten MPP trackers, RS485 and optional Smart DongleRecord the exact inverter, SmartLogger or Dongle and published point profile before considering a read-only site observer.
SUN2000-110KTL-M2 and 115KTL-M2Other ratings in the user-manual familyDo not carry this 100 kW rating or country-specific electrical limits across to a sibling.
SUN2000-100KTL-M1, H0, H1 or H2Different generations with similarly named 100 kW productsDo not reuse their communications, register or electrical assumptions for the M2.

Specifications

Huawei's 100KTL-M2 datasheet identifies a nominal 100 kW AC active-power inverter, ten MPP trackers and RS485 communications. The exact-model user manual shows RS485 and MBUS networks to a SmartLogger or Smart Dongle rather than an unrestricted Ethernet reader attached to the inverter.12

Exact model
SUN2000-100KTL-M2; confirm regional suffix and firmware2
Nominal AC active power
100 kW at the documented 400 V configuration1
PV tracking
Ten independent MPP trackers; up to two inputs per tracker1
RS485-1 role
Cascade inverters or connect to a SmartLogger2
RS485-2 role
Connect a downstream RS485 device; a grid meter may occupy it for point-of-connection power control2
Northbound route
Project-specific SmartLogger or Dongle route; third-party points and permissions require a matching Huawei protocol document234

Interface

Documented measurements and integration boundaries for SUN2000-100KTL-M2.

  • Issue 43 register 40525 reports total output active power of connected inverters/PCSs. It is not the output of a selected M2, and it is not grid-point import/export.
  • RS485-1 is used to cascade inverters or connect the SmartLogger. RS485-2 may connect a grid power meter in Smart Dongle or single-inverter power-control scenarios. It is not a spare generic telemetry pair.
  • Huawei's MBUS plant-network option is separate from an M-Bus utility meter and separate from Edge's local client transport.
  • Inverter generation cannot by itself establish grid import or export. Qualify the actual feed-in meter and its measurement boundary.
  • Do not issue inverter setpoints, grid-code settings, export-limit or VPP dispatch writes from this selection guide.

Assessment

SUN2000-100KTL-M2 in a commissioned SmartLogger3000 plant, read-only logger-level TCP monitoring using Issue43; no direct inverter TCP or plant-control claim.

InteroperabilitySupported with conditions
The retained Huawei documents define a TCP endpoint, logger addressing and aggregate power read through the installed SmartLogger3000.2356
AccuracyNot yet assessed
The map defines signed kW and aggregate inverter/PCS output. Installed measurement accuracy and downstream completeness have not been measured.256
SecurityNot yet assessed
The manual documents IP-limited clients and identifies standard Modbus TCP as unauthenticated and unencrypted. Installed network isolation has not been inspected.356
ReliabilityNot yet assessed
The map defines responses; installed polling, downstream loss and recovery behavior have not been measured.356
RuggednessSupported with conditions
Huawei publishes an IP66 rating and commercial inverter technical specification; actual site, regional and maintenance conditions still apply.1
ScalabilityNot yet assessed
The inverter manual describes cascaded logger networks, but acceptable third-party polling capacity is unverified.23
LifecycleSupported with conditions
Huawei publishes exact-model manuals and a current datasheet; deployed software and regional variant still need matching review.12

Setup

Read SmartLogger identity and aggregate plant power

Use the installed SmartLogger3000 TCP endpoint on the approved site network. The published Issue 43 map is the starting revision; the register numbers below are literal Modbus PDU addresses.

Identity
Issue43 logger-level Unit ID 0: FC03 address 40713, quantity 10, STR equipment serial number. PDU 03 9F 09 00 0A. Compare ESN with the SmartLogger WebUI before accepting production data.
Aggregate active power
FC03 address 40525, quantity 2: PDU 03 9E 4D 00 02. Read signed I32, high word first, divide by 1000 for kW. Synthetic 00 01 86 A0 decodes 100000 ÷1000 = 100.000 kW; FF FE 79 60 gives -100.000 kW. These are decoder examples, not field measurements.
Measurement boundary
40525 sums output active power of all connected inverters/PCSs. It cannot identify a particular M2 or replace the site meter. Match the configured communications/logical addressing for downstream equipment separately; do not reuse logger Unit ID 0 as an inverter address.
Response and troubleshooting
Include the TCP MBAP header with the configured Unit ID; the PDUs omit that envelope. Check endpoint, client allow-list, listening port and logger addressing first if reads fail. Exceptions, incomplete responses and timeouts stay unavailable rather than zero. Compare fresh values with the WebUI before expanding polling.

Acceptance: A bounded logger-level monitoring start from retained Huawei documentation. Installed Edge operation remains untested; inverter-specific telemetry and site-meter measurements use their own identities and maps. Control stays with the commissioned plant owner.

  1. Identify the exact M2 and plant owner

    Record the SUN2000-100KTL-M2 nameplate, country variant and firmware. Identify the SmartLogger or Smart Dongle, whether the plant uses RS485 or MBUS, and which system owns export and grid control.

  2. Trace both RS485 roles

    Map the inverter's RS485-1 uplink and RS485-2 downstream devices. Preserve the commissioned SmartLogger bus and any meter used at the grid connection point.

  3. Enable the local logger monitoring handoff

    In Settings > Comm. Param. > Management System, configure the third-party Modbus TCP link. Prefer Enable(Limited) with the reader’s fixed IP; record the configured listening port and address mode. Huawei permits up to five preset clients. This standard TCP mode has no authentication or encryption, so keep it on a protected site network. Do not change the existing controller’s settings.

  4. Read the logger before adding inverter points

    Read logger ESN at 40713, ten registers, and compare it with the WebUI. Then read 40525 as signed I32 with gain 1000 and unit kW. Issue 43 assigns logger-level TCP Unit ID 0; use the worked check below and confirm addressing against the installed configuration.

  5. Qualify site energy separately

    For self-consumption, import, export or flexibility reporting, document the grid-point meter, direction convention and sampling freshness separately from inverter output.

Common questions

Can Edge plug directly into the SUN2000-100KTL-M2 over Ethernet?
This guide does not establish a native inverter Ethernet service. Huawei documents RS485 or MBUS plant networking and optional logger or Dongle equipment. The actual third-party route must be identified at the commissioned site.12
Can RS485-2 be used as a spare Edge bus?
Do not assume so. Huawei documents RS485-2 for a downstream device, including the grid-point power meter when that meter supports plant power control. Trace the existing wiring before proposing any new connection.2
Does a SmartLogger Modbus setting prove approved inverter dispatch?
The manual and interface map provide a monitoring handoff, but they do not commission plant dispatch. Keep the reader read-only and preserve the existing export/grid controller; no write is included here.356

Sources

  1. SUN2000-100KTL-M2 technical specification (opens in a new tab) (PDF) Huawei
  2. SUN2000-(75KTL-M1, 100KTL-M2, 110KTL-M2, 115KTL-M2) user manual, issue 24 (opens in a new tab) (PDF) Huawei, hosted by SKE Solar
  3. SmartLogger3000: setting RS485 communications parameters (opens in a new tab) Huawei
  4. SmartLogger3000A, B and C family technical specification (opens in a new tab) (PDF) Huawei
  5. Huawei SmartLogger ModBus Interface Definitions, Issue 43, 21 October 2023 (public mirror) (opens in a new tab) Huawei
  6. Huawei SmartLogger3000 User Manual, Issue 33, 15 April 2026 (SKE-hosted copy) (opens in a new tab) (PDF) Huawei

Further reading

Product names and trademarks belong to their owners. Publication does not imply endorsement or a commercial relationship.