SolaX Power X3-FORTH

Commercial PV inverter

SolaX publishes a Modbus RTU monitoring map for X3-FORTH and X3-MEGA G2. A separate OEM article documents Modbus TCP through supported Pocket dongles. Keep either monitoring path separate from the inverter-master, meter and DataHub control arrangement.

  • Modbus RTU
  • Modbus TCP

Commercial PV inverter

Compatibility

Direct Edge integration not yet verified

Protocol V1.1, 16 May 2023, defines input-register reads for this family. The public point map provides a best-effort starting point; compare the first measurements with the inverter display.

X3-FTH-75K, 80K, 100K, 110K, 120K or 125K. Record the installed serial settings and bus owner. For Pocket TCP, check the OEM compatibility table and the actual dongle firmware.

Models

Download
ModelsInterfaceRoute into Edge
X3-FTH-75K and X3-FTH-80K75 or 80 kW; nine MPPTsUse the exact AC voltage and country variant.
X3-FTH-100K to X3-FTH-125K100 to 125 kW; nine or twelve MPPTs by variantDo not infer the MPPT count from rated power alone.

Specifications

X3-FORTH covers six ratings and uses nine or twelve MPPTs depending on the exact variant. Rated power alone does not establish the input topology.12

Model range
75, 80, 100, 110, 120 and 125 kW variants12
PV inputs
Nine or twelve MPPTs by rating and option12
Published interfaces
RS485 and DRM12
Installation limits
IP66; -25 to +60 °C12

Interface

Documented measurements and integration boundaries for X3-FORTH.

  • FC04 exposes phase voltage, frequency, active power, daily/total energy and operating state using typed input registers.
  • Every value must retain its source device and measurement boundary; inverter, meter, logger and controller values are not interchangeable.

Assessment

X3-FTH-75K, 80K, 100K, 110K, 120K or 125K. Record the installed serial settings and bus owner. For Pocket TCP, check the OEM compatibility table and the actual dongle firmware.

InteroperabilitySupported with conditions
Protocol V1.1, 16 May 2023, defines input-register reads for this family. The public point map provides a best-effort starting point; compare the first measurements with the inverter display.1234
AccuracySupported with conditions
The published map defines inverter measurements and scaling. Inverter production remains distinct from connection-point metering and settlement accuracy.1234
SecuritySupported with conditions
The Pocket setup uses a login and a local network connection. Change default credentials and restrict network access; the source does not establish encrypted Modbus transport or separate read-only privileges.1234
ReliabilityLimited
Electrical and environmental limits are published, while communication recovery, stale data and concurrent-client behavior remain unverified.12
RuggednessSupported with conditions
The manufacturer publishes enclosure and operating limits; the installation must still meet those limits.12
ScalabilityLimited
The vendor documents multi-device or plant operation, but third-party polling limits and coexistence behavior are not established.12
LifecycleSupported with conditions
The versioned protocol and model-specific manuals provide a usable monitoring baseline. Retain the selected document and installed firmware with the configuration.1234

Setup

  1. Record the complete identity

    Photograph the nameplate and record the exact model, serial number, installed firmware and communication accessories. Do not select a point map from the family name alone.

  2. Map the commissioned topology

    For RTU, the specific serial-settings table gives 9600 baud, 8 data bits, no parity and one stop bit. Use the installed settings and one bus master. The OEM TCP article lists X3-FORTH ARM V015.01 and X3-MEGA G2 ARM V008.02 with supported Pocket dongles; read on the same protected LAN using the dongle's assigned IP.

  3. Read voltage and frequency

    Use FC04 at PDU address 0x0103 (259), one register, for phase-A voltage: request 04 01 03 00 01; U16 raw 0x08FC gives 230 V with multiplier 0.1. Frequency at 0x0106 (262) is U16 with multiplier 0.01 Hz: request 04 01 06 00 01; raw 0x1388 gives 50 Hz. The table addresses are hexadecimal, not decimal strings. Compare both readings with the local display before extending the map.

  4. Add power, energy and operating state

    Active power at 0x0183 (387) is two-register S32 in W. The document does not explicitly specify its 32-bit word order; compare both word orders with the display before storing that decoder. Daily energy at 0x0189 (393) is U16 × 0.1 kWh, total energy at 0x018A (394) is U32 × 0.1 kWh, and operating state at 0x0200 (512) is U16. Reserved rows are not measurements.

Common questions

Does a published RS485 or Ethernet interface prove direct Edge compatibility?
Protocol V1.1, 16 May 2023, defines input-register reads for this family. The public point map provides a best-effort starting point; compare the first measurements with the inverter display.34
Can inverter values replace the point-of-connection meter?
No. Inverter telemetry describes conversion equipment. PCC control, protection, billing and settlement require their commissioned independent measurements.12
Does this guide support plant control?
No. It publishes no Edge write path. Export, active-power, reactive-power, battery, generator and protection functions remain with the commissioned control system.12

Sources

  1. X3-FORTH Series user manual (opens in a new tab) (PDF) SolaX Power
  2. X3-FORTH datasheet (opens in a new tab) (PDF) SolaX Power
  3. X3-MEGA G2 / X3-FORTH Modbus RTU protocol, V1.1, 16 May 2023 (opens in a new tab) SolaX Power
  4. How to get device data by Modbus TCP (opens in a new tab) SolaX Power

Further reading

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