verified connector library

Studer Xtender/VarioTrack/VarioString (needs Xcom-485 module)

Register map(s) for this device, each at the trust rung it earned. Addresses are 0-based as on the wire. Word order and scaling are confirmed at the hardware-verified rung and at no rung below it.

interop-verified

Read + decoded cleanly over a real network vs an independent third-party Modbus test server (transport and framing; reads are remapped into the server's register window, so the map's own addresses are NOT exercised). Does NOT prove word order/scaling against the actual device.

pointaddress (0-based)typescaleunit
xtender_battery_voltage3000F32LE1V
xtender_battery_temperature3001F32LE1°C
xtender_battery_charge_current3005F32LE1Adc
xtender_state_of_charge3007F32LE1%
xtender_input_voltage3011F32LE1Vac
xtender_input_current3012F32LE1Aac
xtender_input_power3013F32LE1kVA
xtender_output_voltage3021F32LE1Vac
xtender_output_current3022F32LE1Aac
xtender_output_power3023F32LE1kVA
xtender_input_frequency3084F32LE1Hz
xtender_output_frequency3085F32LE1Hz
xtender_output_active_power3087F32LE1W
xtender_input_active_power3088F32LE1W
bsp_battery_voltage7000F32LE1Vdc
bsp_battery_current7001F32LE1Adc
bsp_state_of_charge7002F32LE1%
bsp_power7003F32LE1W
bsp_temperature7005F32LE1°C
variotrack_battery_voltage11000F32LE1Vdc
variotrack_battery_current11001F32LE1Adc
variotrack_pv_voltage11002F32LE1Vdc
variotrack_pv_current11003F32LE1Adc
variotrack_pv_power11004F32LE1kW
variostring_battery_voltage15000F32LE1Vdc
variostring_battery_current15001F32LE1Adc
variostring_pv_voltage15004F32LE1Vdc
variostring_pv_current15007F32LE1Adc
variostring_pv_power15010F32LE1kW
bench facts as documented (unverified)
doc revisionV1.6.40 (R700)
field reports — community-sourced, unverified (checked 2026-06-11)
  • The Xcom-485i module uses physical DIP switches to configure a Modbus address offset (0, 32, 64, or 128), which shifts the actual device address range and must be accounted for in client configurations. [source]
  • confirmed: xtender_battery_voltage @ 3000 — confirmed by Studer Modbus RTU Technical Specs V1.6.20/V1.6.40
  • confirmed: xtender_battery_temperature @ 3001 — confirmed by Studer Modbus RTU Technical Specs V1.6.20/V1.6.40
  • confirmed: xtender_battery_charge_current @ 3005 — confirmed by Studer Modbus RTU Technical Specs V1.6.20/V1.6.40
  • confirmed: xtender_state_of_charge @ 3007 — confirmed by Studer Modbus RTU Technical Specs V1.6.20/V1.6.40
  • confirmed: bsp_battery_voltage @ 7000 — confirmed by Studer Modbus RTU Technical Specs V1.6.20/V1.6.40
  • confirmed: variotrack_battery_voltage @ 11000 — confirmed by Studer Modbus RTU Technical Specs V1.6.20/V1.6.40
  • confirmed: variostring_battery_voltage @ 15000 — confirmed by Studer Modbus RTU Technical Specs V1.6.20/V1.6.40

The trust ladder

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

If your device isn't here, upload its register map. Generation is free, and the connector keeps the rung it earns under testing.

To prove a connector against your own device, order hardware verification. If it doesn't verify, you don't pay.

Platform builders can license the verified library: machine-readable maps, the firmware matrix, API access.