Siemens SENTRON PAC2200

Three-phase power meter

A DIN-rail three-phase meter. Edge reads voltage, current and power over Modbus. Match the installed ordering code in the model table.

Siemens SENTRON PAC2200
  • Modbus TCP

Three-phase power meter

Download Edge template

Compatibility

Compatible

Siemens publishes the PAC2200 interface and register table. Edge polls the documented measurements as a Modbus client.

The PAC2200 family is compatible over Modbus. This guide commissions the Ethernet model 7KM2200-2EA30-1EA1. RS-485, 65 A, CLP and MID variants are in the table, and they do not share this interface.

Connect it with

Ethernet PAC2200 on a protected site LAN

  • Modbus
  • Edge
  • Platforms
Three-phase power meter
Interface
Gateway
Edge
Output
SENTRON PAC2200PAC2200 Ethernet port
Protected EthernetSegmented LAN
ZGW-20 GatewayHosts Edge locally
EpiSensor EdgeEdge Modbus client
Customer platformMQTT · API · files
Modbus TCP
Protected Ethernet
Runs locally
Optional onward data
Give the meter a managed address and keep it off the public internet. Edge polls the read-only points listed below. The customer-platform output is optional; Edge remains the local system of record.

Specifications

A three-phase DIN-rail power meter for 5 A current transformers, ordered with either an Ethernet port for Modbus TCP or an RS-485 port for Modbus RTU. It is powered from the measuring voltage and keeps its energy counters through a power cut.12

Current inputs
5 A current transformers; a 65 A direct-connected variant exists2
Voltage inputs
400 V L-L / 230 V L-N1
Communications
Ethernet Modbus TCP (7KM2200-2EA30-1EA1) or RS-485 Modbus RTU (7KM2200-2EA30-1DA1)13
Power supply
From the measuring voltage, 100 to 230 V AC ±20 %2
Protection
6.5 kV impulse withstand; CAT III; EN 61326-1 immunity2
Mounting
DIN rail, indoor panel2

Interface

This register map is for the 7KM2200-2EA30-1EA1. 7KM2200-2EA30-1DA1 and other variants have their own interfaces and are not covered here.

Communication settings

Interface
Ethernet, Modbus TCP, 5 A transformer inputs, 400 V L-L / 230 V L-N
Read with
FC04 (input registers)
Word order
High word first on every value
Addresses
Zero-based PDU addresses, as sent on the bus
Route into Edge
Edge Modbus client over a protected Ethernet network

From PAC2200 Equipment Manual, 12/2022, L1V30415167B-062.

Register map

Download
PointAddressHexFormatScaleUnit
Voltage L1-N 1 0x0001 FLOAT32 ×1 V
Voltage L2-N 3 0x0003 FLOAT32 ×1 V
Voltage L3-N 5 0x0005 FLOAT32 ×1 V
Voltage L1-L2 7 0x0007 FLOAT32 ×1 V
Voltage L2-L3 9 0x0009 FLOAT32 ×1 V
Voltage L3-L1 11 0x000B FLOAT32 ×1 V
Current L1 13 0x000D FLOAT32 ×1 A
Current L2 15 0x000F FLOAT32 ×1 A
Current L3 17 0x0011 FLOAT32 ×1 A
Active Power L1 25 0x0019 FLOAT32 ×1 W
Active Power L2 27 0x001B FLOAT32 ×1 W
Active Power L3 29 0x001D FLOAT32 ×1 W
Reactive Power L1 31 0x001F FLOAT32 ×1 VAr
Reactive Power L2 33 0x0021 FLOAT32 ×1 VAr
Reactive Power L3 35 0x0023 FLOAT32 ×1 VAr
Power Factor L1 37 0x0025 FLOAT32 ×1 -
Power Factor L2 39 0x0027 FLOAT32 ×1 -
Power Factor L3 41 0x0029 FLOAT32 ×1 -
Frequency 55 0x0037 FLOAT32 ×1 Hz
Total Apparent Power 63 0x003F FLOAT32 ×1 VA
Total Active Power 65 0x0041 FLOAT32 ×1 W
Total Reactive Power 67 0x0043 FLOAT32 ×1 VAr
Total Power Factor 69 0x0045 FLOAT32 ×1 -
Neutral Current 71 0x0047 FLOAT32 ×1 A

Download the 7KM2200-2EA30-1EA1 register map as CSV

Assessment

The assessment is for the Ethernet 5 A model read over Modbus TCP. Other PAC2200 versions on this page may differ.

InteroperabilityWell supported
Siemens publishes the Modbus TCP register offsets, data types and units.124
AccuracySupported with conditions
The main three-phase values. Input type, accuracy, wiring mode and counter format depend on the ordering code, so match it to the model table.12
SecuritySupported with conditions
A password, a hardware write lock, an IP filter and a configurable TCP port. Modbus TCP itself has no encryption or authentication, so keep the meter on a separate network segment.24
ReliabilityWell supported
Powered from the measuring voltage (100-230 V AC ±20 %), and the counters survive a power cut. 6.5 kV impulse withstand, CAT III and EN 61326-1 immunity, with the bus cable grounded.12
RuggednessSupported with conditions
A DIN-rail meter for an indoor panel. The panel, enclosure and temperature decide where it can go.12
ScalabilitySupported with conditions
Three Modbus TCP connections at once. Polling load, network design and one template per model keep a large estate manageable.12
LifecycleWell supported
A current product with an equipment manual, a firmware process and Siemens powerconfig. Keep the firmware and template version you commissioned against.12

Edge template

This JSON file supplies the register map. Applying it to an existing meter replaces its sensor list while retaining the site connection, unit ID and enable state.

ModelConnectionPointsVersionUpdatedDownload
7KM2200-2EA30-1EA1 Ethernet, Modbus TCP, 5 A transformer inputs, 400 V L-L / 230 V L-N 24 1.0.0 Download

Downloads need a signed-in account with Edge download access.

Use the template in Edge

  1. Import the JSON file

    In Edge, open Settings, then Devices and Templates. Choose Import JSON and select the downloaded file. Confirm that the model and template name match your device.

  2. Load the map for your meter

    For a new Modbus device, use Load Template before entering the manufacturer or model; it fills those fields and the register list. Set the name, site connection and unit ID, check the polling enable state, then test before saving. For an existing device, apply only to the matching model; this replaces its sensor list but retains its connection, unit ID and enable state.

  3. Test a reading

    Use Test in the wizard and compare a known reading with the meter display. Check its unit, sign and scale, then confirm that timestamps keep advancing. These starter maps are read-only and leave exports off until you configure them.

Setup

Read L1-to-neutral voltage

Use this bounded check only on an already commissioned meter. It verifies one live measurement without writing a register or changing the PAC2200 configuration.

Function
FC03 or FC04 read
Siemens offset
1
PDU start
1 / 0x0001
4xxxx display
40002 when the client uses 40001-based notation
Length
2 registers
Decode
IEEE-754 float32
Engineering unit
V
Scale
multiplier 1 · offset 0

Acceptance: Compare the decoded value with the simultaneous L1-N reading on the meter display. Retain the raw response, configured byte and word order, timestamp and observed difference before mapping further points.

  1. Identify the model

    Read the full ordering code and firmware before choosing a map: the PAC2200 comes in several interface versions, and they are not interchangeable.

  2. Set the address and network settings

    Confirm the IP address, Modbus TCP port and unit ID. Port 502 is the default, not a value to assume on an existing site. Allow traffic from Edge to the meter only.

  3. Connect the meter

    Connect the Ethernet version to the site network, or wire and terminate the RS-485 version’s bus. Leave the hardware write protection on.

  4. Check one value

    Read the voltage from the check above with Siemens’ protocol offset 1 (display reference 40002). Compare units and signed power with the front panel, and watch fresh timestamps over several polls.

  5. Add current, power and energy

    Add L1 current at offset 13 and total active power at 65: FC03 or FC04, two registers, float32 in A and W, multiplier 1. For an energy display, read import tariff 1 at 2801 and tariff 2 at 2803, two-register float32 in Wh; divide by 1000 for kWh. For calculations, use the higher-resolution four-register Double counters at 801/805 (import T1/T2) and 809/813 (export T1/T2), in Wh. Use a 64-bit decoder for those counters; they are separate from a native 32-bit Edge map. Compare interval changes with the display and keep write protection enabled.

Sources

  1. SENTRON PAC2200 7KM2200-2EA30-1EA1 product details (opens in a new tab) Siemens
  2. PAC2200 Equipment Manual, 12/2022, L1V30415167B-06 (opens in a new tab) (PDF) Siemens
  3. SENTRON PAC2200 7KM2200-2EA30-1DA1 product details (opens in a new tab) Siemens
  4. Modbus specifications and implementation guides (opens in a new tab) Modbus Organization

Further reading

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