Monitors energy quantities via a multifunctional energy analyzer over Modbus TCP.
Overview
Template for the Janitza UMG 806 and UMG 806-EC1 multifunctional energy analyzers. Reads voltage, current, power, frequency, and energy values over Modbus TCP. All 14 registers are read-only float32 values, so no device control is included.
Key readings
Voltage L1-N to L3-N
Current L1 to L3
Real Power
Reactive Power
Apparent Power
Energy Consumed and Delivered
Use cases
Monitor three-phase voltage, current, and power on a live cloud dashboard for each installation site.
Track cumulative energy consumed and delivered over time to support tenant billing or energy audits.
Create an alert when phase current exceeds a defined threshold to prevent overload conditions.
Compare real power, reactive power, and apparent power to identify power factor issues remotely.
Log frequency deviations over time to detect grid instability at the point of connection.
Generate periodic energy reports for facility managers without visiting the site.
Installation
1Mount the Janitza UMG 806 or UMG 806-EC1 in the distribution board and wire the voltage and current inputs according to the Janitza installation manual.
2Connect the UMG 806 to the local Ethernet network and assign a static IP address through the device display or Janitza GridVis software.
3Verify that Modbus TCP is enabled on the analyzer and note the configured Modbus TCP port (default is 502).
4Connect your ModbusCloud gateway (MCG or MLP series) to the same local network and ensure it can reach the analyzer IP address.
5Import the Janitza UMG 806-EC1 Modbus TCP template in the ModbusCloud platform and enter the device IP address and Modbus unit ID.
6Confirm live data appears on your ModbusCloud dashboard by checking that voltage and current readings match the local display on the analyzer.
Things to watch for
01
What byte order does the UMG 806 use for float32 registers?
The UMG 806 uses big-endian (AB CD) byte order for its float32 registers. The ModbusCloud template is preconfigured with this byte order, so no manual adjustment is needed.
02
I see zero values for all energy registers after connecting. What should I check?
Energy registers are cumulative. If the analyzer was recently installed or reset, the counters may still be at zero. Verify on the local device display that energy values are accumulating. Also confirm the register start address is set to 19000.
03
Can I use this template with a UMG 806 that does not have the EC1 suffix?
Yes. The standard UMG 806 and the UMG 806-EC1 share the same Modbus register map for the values covered by this template. Both models are supported.
04
What is the default Modbus TCP port and unit ID for the UMG 806?
The default Modbus TCP port is 502. The default unit ID is typically 1, but this can be changed in the device settings. Make sure the unit ID in ModbusCloud matches the value configured on the analyzer.
Registers (14)
14 read / 0 write
Name
Address
Function
Type
Unit
Access
Voltage L1-N
19000
FC03
float32
V
R
Voltage L2-N
19002
FC04
float32
V
R
Voltage L3-N
19004
FC03
float32
V
R
Current L1
19012
FC03
float32
A
R
Current L2
19014
FC03
float32
A
R
Current L3
19016
FC03
float32
A
R
Measured frequency
19050
FC03
float32
Hz
R
Real Energy Consumed
19068
FC03
float32
kWh
R
Apparent Energy
19084
FC03
float32
kVAh
R
Reactive Energy
19092
FC03
float32
kvarh
R
Real Power
19026
FC03
float32
kW
R
Reactive Power
19042
FC03
float32
kvar
R
Apparent Power
19034
FC03
float32
kVA
R
Real Energy Delivered
19076
FC03
float32
kWh
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.
