Monitors single-phase energy consumption via current transformer.
Overview
Template for the Fineco EM115-MOD single-phase energy meter with current transformer. Reads voltage, current, power, frequency, power factor, and import/export energy values over Modbus RTU. Also supports clearing accumulated energy data via a write register.
Key readings
Voltage
Frequency
Current
Active/Apparent/Reactive Power
Power Factor
Import/Export Active & Reactive Energy
Available commands
Clear Energy
Use cases
Monitor real-time voltage, current, and power consumption of a single-phase circuit on a remote dashboard.
Track cumulative import and export active energy to verify tenant billing or solar self-consumption.
Create an alert when power factor drops below a defined threshold to detect capacitive or inductive load issues.
Reset accumulated energy counters remotely at the start of a new billing period using the clear energy register.
Log historical energy data for energy audits or performance reporting in commercial buildings.
Installation
1Wire the RS-485 A and B terminals of the Fineco EM115-MOD to the corresponding terminals on your ModbusCloud gateway (MCG or MLP series), observing correct polarity.
2Install and connect the current transformer around the phase conductor according to the EM115-MOD installation manual, ensuring the CT ratio matches the meter configuration.
3Set the Modbus slave address on the EM115-MOD using the front panel buttons, and verify the baud rate is set to 9600 (factory default).
4Power on the gateway and log in to the ModbusCloud platform, then assign the Fineco EM115-MOD template to the corresponding Modbus address.
5Verify that live readings such as voltage, current, and power appear correctly on the dashboard before closing the distribution panel.
Things to watch for
01
I see zero values for current and power but voltage reads correctly. What is wrong?
This usually indicates a problem with the current transformer installation. Verify that the CT is properly clamped around the phase conductor and that the CT secondary wiring is connected to the correct terminals on the EM115-MOD. Also check that the CT ratio configured in the meter matches the physical CT.
02
My readings appear as very large or nonsensical numbers. What could cause this?
The EM115-MOD uses float32 (IEEE 754) registers spanning two consecutive Modbus addresses. If the register byte order or word order is mismatched, values will be decoded incorrectly. The template handles this automatically, but if you have modified register settings, verify they match the defaults.
03
Can I connect multiple EM115-MOD meters to a single gateway?
Yes. Each meter must have a unique Modbus slave address on the RS-485 bus. Use the front panel of each EM115-MOD to assign a different address. Then add a separate template instance in ModbusCloud for each address.
04
What baud rate should I use?
The default baud rate for the EM115-MOD is 9600 with 8 data bits, no parity, and 1 stop bit (8N1). Ensure the ModbusCloud gateway serial port is configured to match these settings exactly.
Registers (14)
13 read / 1 write
Name
Address
Function
Type
Unit
Access
1_Voltage
2
FC03
float32
V
R
9_Import_Reactive_Energy
354
FC04
float32
varh
R
10_Reserve(default 0)
356
FC04
float32
R
11_Export_Active_Energy
358
FC04
float32
kWh
R
12_Export_Reactive_Energy
360
FC04
float32
varh
R
13_Total_Active_Energy
362
FC04
float32
kWh
R
2_Frequency
4
FC04
float32
Hz
R
3_Current
6
FC04
float32
A
R
4_Active_Power
8
FC04
float32
W
R
5_Apparent_Power
10
FC04
float32
va
R
6_Reactive_Power
12
FC04
float32
var
R
7_Power_Factor
14
FC04
float32
R
8_Import_Active_Energy
352
FC04
float32
kWh
R
Clear_Energy
1381
FC05
uint16
W
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.
