verified connector library

Siemens SENTRON PAC3200 power meter

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
voltage_va_n1F32BE1
voltage_vb_n3F32BE1
voltage_vc_n5F32BE1
voltage_va_b7F32BE1
voltage_vb_c9F32BE1
voltage_vc_a11F32BE1
current_a13F32BE1
current_b15F32BE1
current_c17F32BE1
apparent_power_a19F32BE1
apparent_power_b21F32BE1
apparent_power_c23F32BE1
active_power_a25F32BE1
active_power_b27F32BE1
active_power_c29F32BE1
reactive_power_a31F32BE1
reactive_power_b33F32BE1
reactive_power_c35F32BE1
power_factor_a37F32BE1
power_factor_b39F32BE1
power_factor_c41F32BE1
thd_voltage_a43F32BE1
thd_voltage_b45F32BE1
thd_voltage_c47F32BE1
thd_current_a49F32BE1
thd_current_b51F32BE1
thd_current_c53F32BE1
frequency55F32BE1
average_voltage_vph_n57F32BE1
average_voltage_vph_ph59F32BE1
average_current61F32BE1
total_apparent_power63F32BE1
total_active_power65F32BE1
total_reactive_power67F32BE1
total_power_factor69F32BE1
working_hours_counter213U32BE1
universal_counter215U32BE1

link settings as documented (unverified): TCP/RTU; default 19200 8N2; unit ID 126; FC 02,03,04,06,16,43; Modbus TCP is integrated. Modbus RTU is supported via the optional PAC RS485 expansion module.

⚠ DANGER: Electric shock and arc flashover in the case of open transformer circuits. Will cause death, serious injury or considerable property damage. Never open the secondary circuit of the current transformers under load. — Starkest reads only; we never write a control register.

bench facts as documented (unverified)
terminalsScrew terminals or ring lug terminals
A/B polarityInvert CT polarity programmable
connectorRJ45 for Ethernet, screw/ring terminals for power and measurement
isolationOptically isolated digital input and digital output
shield/groundReference potential terminal discharges interference affecting the digital input/output and RJ45 connector. Connect to equipotential bonding strip in control cabinet.
response timeout0 ms
protocol notesError in the case of inconsistent access to measured values. If a value consists of two registers, a read command applied in the second register, for example, will generate an error code. SENTRON PAC will also output an error code if, for example, a write operation ends in the middle of a multi-register value. Device information parameters must be accessed block-by-block only.
model register64001
serial register64011
firmware register64020
FC 43 device IDsupported
powerAC/DC multi-range power supply: 95 to 240 V AC ±10 % / 50 / 60 Hz or 110 to 340 V DC ±10 %. Extra-low voltage DC power supply: 24 V, 48 V and 60 V DC ±10 % or 22 to 65 V DC ±10 %.
environmentOperating temperature: -10 °C to +55 °C. Storage temperature: -25 °C to +70 °C. Relative humidity: 95% at 25°C without condensation. Operating altitude: Up to 2000 m. Degree of pollution: 2. Front: IP65, Rear: IP20, NEMA 1A.
accuracyVoltage: ±0.3%, Current: ±0.2%, Power: ±0.5%, Frequency: ±0.05%, Power factor: ±0.5%, Active energy: Class 0.5S (IEC 62053-22), Reactive energy: Class 2 (IEC 62053-23).
certificationsIEC 62053-22:2003-01, IEC 62053-23:2003-01, UL (max 600 V)
doc revision02/2008 A5E01168664B-04
field reports — community-sourced, unverified (checked 2026-06-11)
  • Addresses of the registers in PAC3200 may require an offset of +1 (off-by-one) depending on the client software (e.g., starting at address 2 instead of 1 for Voltage Va-n). [source]
  • The PAC3200 stores 32-bit float values in a format that requires enabling 'Word Swap' (or 'Swap Words in 32-bit Values') in many Modbus clients to prevent incorrect data interpretation. [source]
  • The PAC3200 has a hardware limitation supporting a maximum of only two concurrent Modbus TCP connections, which can cause connection errors (such as 80E0 or 80C4) if multiple clients attempt to poll it simultaneously. [source]
  • The default protocol on the PAC3200's Ethernet port may be set to SEAbus instead of Modbus TCP, requiring manual protocol configuration in the meter's settings before Modbus TCP communication can succeed. [source]
  • confirmed: doc_revision: 02/2008 A5E01168664B-04 — confirmed by Siemens official manual publication details [1.1.2]
  • confirmed: voltage_va_n @ 1, voltage_vb_n @ 3, voltage_vc_n @ 5, frequency @ 55 — confirmed by Modbus measured variables table in manual
  • confirmed: Invert CT polarity programmable — confirmed by the INVERT CT POLARITY parameter in the manual
  • confirmed: Error in the case of inconsistent access to measured values — confirmed by the manual's warning on multi-register read/write boundaries
  • confirmed: default_unit_id: 126 — confirmed by the default RS485 module address of 126 in the manual

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.