Monitors three-phase energy metering via Modbus TCP on Siemens Sentron PAC 2200.
Overview
Template for the Siemens Sentron PAC 2200 three-phase energy meter over Modbus TCP. It reads per-phase voltage, current, apparent power, active power, and reactive power, as well as total power values. No control functions are included.
Key readings
Voltage L1-N, L2-N, L3-N
Voltage L1-L2, L2-L3, L3-L1
Current L1 to L3
Apparent Power L1 to L3
Active Power L1 to L3
Total Active, Apparent, Reactive Power
Use cases
Monitor per-phase voltage, current, and power readings on a live cloud dashboard for remote energy oversight.
Create alerts when total active power exceeds a contractual demand limit to avoid penalty charges.
Track energy consumption trends per building section or tenant using historical data exports.
Compare line-to-line voltages across phases to detect voltage imbalance issues early.
Generate periodic energy reports for facility managers without requiring on-site meter readings.
Verify power factor by reviewing active and reactive power values on the dashboard.
Installation
1Connect the Siemens Sentron PAC 2200 to the local Ethernet network and verify it has a valid IP address.
2Configure the Modbus TCP port (default 502) and unit ID on the PAC 2200 using the front-panel menu or Siemens software.
3Connect the ModbusCloud gateway (MCG or MLP series) to the same local network as the PAC 2200.
4In the ModbusCloud platform, add a new device and select the Siemens Sentron PAC 2200 template from the library.
5Enter the IP address and Modbus unit ID of the PAC 2200 in the device configuration screen.
6Confirm that live readings appear on the dashboard, then configure any desired alerts or data logging intervals.
Things to watch for
01
I see zero or incorrect values for all registers. What should I check?
Verify the IP address and Modbus unit ID match the settings on the PAC 2200. Also confirm that Modbus TCP is enabled on the meter and that no firewall is blocking port 502.
02
Do I need to configure float32 byte order manually?
No. The template is preconfigured with the correct float32 register mapping for the PAC 2200. Each value spans two consecutive registers, and the template handles the byte order automatically.
03
The template does not include all PAC 2200 registers. Can I add more?
Yes. You can extend the template by adding custom registers using the PAC 2200 Modbus register documentation from Siemens. Use float32 as the data type for additional registers.
04
Can I connect multiple PAC 2200 meters to one ModbusCloud gateway?
Yes. Assign each PAC 2200 a unique IP address or unique Modbus unit ID, then add each meter as a separate device in the ModbusCloud platform using the same template.
Registers (18)
18 read / 0 write
Name
Address
Function
Type
Unit
Access
Voltage L1-N
1
FC03
float32
V
R
Voltage L2-N
3
FC03
float32
V
R
Voltage L3-N
5
FC03
float32
V
R
Voltage L1-L2
7
FC03
float32
V
R
Voltage L2-L3
9
FC03
float32
V
R
Voltage L3-L1
11
FC03
float32
V
R
Current L1
13
FC03
float32
A
R
Current L2
15
FC03
float32
A
R
Current L3
17
FC03
float32
A
R
Apparent Power L1
19
FC03
float32
VA
R
Apparent Power L2
21
FC03
float32
VA
R
Apparent Power L3
23
FC03
float32
VA
R
Active Power L1
25
FC03
float32
W
R
Active Power L2
27
FC03
float32
W
R
Active Power L3
29
FC03
float32
W
R
Total Apparent Power
47
FC03
float32
VA
R
Total Active Power
65
FC03
float32
W
R
Total Reactive Power
51
FC03
float32
var
R
Working with Modbus in your projects?
ModbusCloud is the hardware-plus-software platform that installers use to monitor, visualise and control Modbus devices from one portal. This template is one of hundreds you can use right away.
