Why am I getting no response from the ECA180D?

Check that the baud rate is set to 19200 and parity to odd (8E1) on both the meter and the gateway. Also verify the RS-485 wiring polarity (A and B are not swapped) and that the slave address matches the template configuration.

Some register values show zero or unexpected numbers. What could be wrong?

The ECA180D uses a mix of 16-bit and 32-bit registers starting at high addresses (45056 and above). Make sure the template is correctly imported without manual register edits. If you modified registers, verify the data type (uint16 vs uint32 or int32) for each parameter.

Can I connect multiple ECA180D meters on one RS-485 bus?

Yes. Assign a unique Modbus slave address to each meter and add a separate template instance per device in ModbusCloud. Use proper bus termination on the first and last device.

Does the meter need a firmware update to support Modbus?

Modbus RTU is a standard feature on the ECA180D. No firmware update is required. Ensure Modbus communication is enabled in the meter settings if it was previously disabled.

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Free Modbus template: Hager ECA180D One-phase energy meter | ModbusCloud

///Hager ECA180D One-phase energy meter

Modbus RTU

Hager ECA180D One-phase energy meter

Name: Hager ECA180D One-phase energy meter
Brand: Hager
SKU: c5c68830-6295-47c4-987a-ff634147a598

Hager

Monitors single-phase energy consumption via Modbus RTU

Overview

Template for the Hager ECA180D single-phase energy meter over Modbus RTU. It reads voltage, current, power, energy (in and out), frequency, and power factor. Ideal for monitoring individual circuits or single-phase loads in residential and commercial installations.

Key readings

Voltage
Current
Power
Energy In
Energy Out
Frequency
Power factor (IEC and IEEE)

Use cases

Monitor real-time voltage, current, and power of a single-phase circuit on a cloud dashboard.
Track imported and exported energy over time to verify billing or self-consumption figures.
Create an alert when power factor drops below a threshold, indicating potential reactive power issues.
Compare energy consumption across multiple tenant circuits using one template per meter.
Log frequency readings to detect grid instability events at remote or rural sites.

Installation

1Mount the Hager ECA180D on a DIN rail and wire the load conductors through the meter according to the wiring diagram in the Hager manual.
2Connect the RS-485 A and B terminals of the meter to the corresponding terminals on the ModbusCloud gateway (MCG or MLP series), using twisted-pair cable with proper termination.
3Set the Modbus slave address on the ECA180D using its front buttons or DIP switches, ensuring each meter on the bus has a unique address.
4Confirm that the meter baud rate is set to 19200 with odd parity (8E1), matching the template defaults.
5Import the Hager ECA180D template in the ModbusCloud platform and assign the correct slave address to start receiving data.
6Verify readings on the ModbusCloud dashboard by comparing displayed voltage and current values with a reference measurement at the meter.

Things to watch for

Why am I getting no response from the ECA180D?: Check that the baud rate is set to 19200 and parity to odd (8E1) on both the meter and the gateway. Also verify the RS-485 wiring polarity (A and B are not swapped) and that the slave address matches the template configuration.
Some register values show zero or unexpected numbers. What could be wrong?: The ECA180D uses a mix of 16-bit and 32-bit registers starting at high addresses (45056 and above). Make sure the template is correctly imported without manual register edits. If you modified registers, verify the data type (uint16 vs uint32 or int32) for each parameter.
Can I connect multiple ECA180D meters on one RS-485 bus?: Yes. Assign a unique Modbus slave address to each meter and add a separate template instance per device in ModbusCloud. Use proper bus termination on the first and last device.
Does the meter need a firmware update to support Modbus?: Modbus RTU is a standard feature on the ECA180D. No firmware update is required. Ensure Modbus communication is enabled in the meter settings if it was previously disabled.

Registers (8)

8 read / 0 write

Name	Address	Function	Type	Unit	Access
Voltage	45056	FC03	uint16	V	R
Current	45065	FC03	uint32	A	R
Power	45073	FC03	int32	W	R
Energy In	45160	FC03	uint32	kWh	R
Energy Out	45162	FC03	uint32	kWh	R
Frequency	45062	FC03	uint16	Hz	R
Power factor IEC	45079	FC03	int16	cosΦ	R
Power factor IEEE	45080	FC03	int16	cosΦ	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.

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Specifications

Protocol: Modbus RTU
Brand: Hager
Registers: 8
Compatible models: ECA180D
Last updated: 2 April 2026

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