The meter does not answer. What should I check?

Check address, baud rate, parity and stop bits on the display against the device in ModbusCloud. The communication indicator on the display shows whether the meter receives correct messages. Swap A and B if nothing comes back and make sure the bus is terminated at both ends.

Why do currents and energy look 1000 times too small or too large?

The meter scales currents, power and energy to the primary side with the CT ratio set on the display. Check CT primary and CT secondary in the template against the transformers you installed. The secondary side values show what the meter measures before that scaling.

Can several meters share one RS485 line?

Yes. Give each meter its own address from 1 to 247 and use the same baud rate and parity on all of them. Wire the bus as one line from meter to meter and terminate both ends.

What should I keep in mind when I write a setting?

Set Tariff only works when the tariff mode is set to Modbus on the display. Reset Partial Energies clears the partial counters of the tariffs whose bits you set; the main counters stay. A new Modbus address or baud rate takes effect right away, so change the device in ModbusCloud too.

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Modbus RTU

Hager ECR300C

Name: Hager ECR300C
Brand: Hager
SKU: 099362e4-c931-4fa9-a026-e022ddf83335

Hager

Three-phase MID energy meter via CTs: voltage, current, power and energy per tariff and per phase.

Overview

The Hager ECR300C is a three-phase MID energy meter that measures electricity through current transformers in distribution boards of commercial buildings and industry. This Modbus RTU template reads voltage, current, power and imported and exported energy per tariff and per phase, and lets you select the tariff and reset the partial counters from ModbusCloud.

Key readings

Active power
Imported active energy
Exported active energy
Current per phase
Voltage per phase
Power factor
Energy per tariff

Available commands

Active tariff
Partial energy reset
Modbus address

Use cases

Show the active power and energy of a distribution board on a dashboard and compare tenants or production lines.
Track imported and exported energy per tariff in the history to split day and night consumption.
Get an email when the power factor drops below a threshold you set, so you can check reactive compensation.
Select the active tariff from an automation on a schedule when the tariff input is not wired.
Watch the current per phase to spot an unbalanced load or an overloaded feeder.

Installation

1Connect the RS485 terminals of the meter to the RS485 A and B terminals of the ModbusCloud Gateway and terminate the bus at both ends.
2On the display, set the Modbus address, baud rate, parity and stop bits, for example address 1, 19200 baud, even parity and 1 stop bit.
3Check that the CT primary and secondary are set correctly on the meter, so currents and energy are scaled to the primary side.
4In ModbusCloud, add a Modbus device (RTU) with the same address and serial settings, and import this template.
5Check that voltage, frequency and imported active energy match the display.

Things to watch for

The meter does not answer. What should I check?: Check address, baud rate, parity and stop bits on the display against the device in ModbusCloud. The communication indicator on the display shows whether the meter receives correct messages. Swap A and B if nothing comes back and make sure the bus is terminated at both ends.
Why do currents and energy look 1000 times too small or too large?: The meter scales currents, power and energy to the primary side with the CT ratio set on the display. Check CT primary and CT secondary in the template against the transformers you installed. The secondary side values show what the meter measures before that scaling.
Can several meters share one RS485 line?: Yes. Give each meter its own address from 1 to 247 and use the same baud rate and parity on all of them. Wire the bus as one line from meter to meter and terminate both ends.
What should I keep in mind when I write a setting?: Set Tariff only works when the tariff mode is set to Modbus on the display. Reset Partial Energies clears the partial counters of the tariffs whose bits you set; the main counters stay. A new Modbus address or baud rate takes effect right away, so change the device in ModbusCloud too.

Registers (231)

229 read / 4 write

Name	Address	Function	Type	Unit	Access
Voltage L1-N	•••	•••	•••	V	R
Voltage L2-N	•••	•••	•••	V	R
Voltage L3-N	•••	•••	•••	V	R
Voltage L1-L2	•••	•••	•••	V	R
Voltage L2-L3	•••	•••	•••	V	R
Voltage L3-L1	•••	•••	•••	V	R
Frequency	•••	•••	•••	Hz	R
Current L1	•••	•••	•••	A	R
Current L2	•••	•••	•••	A	R
Current L3	•••	•••	•••	A	R
Current Neutral	•••	•••	•••	A	R
Active Power Total	•••	•••	•••	kW	R
Reactive Power Total	•••	•••	•••	kvar	R
Apparent Power Total	•••	•••	•••	kVA	R
Power Factor Total IEC	•••	•••	•••		R
Power Factor Total IEEE	•••	•••	•••		R
Active Power L1	•••	•••	•••	kW	R
Active Power L2	•••	•••	•••	kW	R
Active Power L3	•••	•••	•••	kW	R
Reactive Power L1	•••	•••	•••	kvar	R
Reactive Power L2	•••	•••	•••	kvar	R
Reactive Power L3	•••	•••	•••	kvar	R
Apparent Power L1	•••	•••	•••	kVA	R
Apparent Power L2	•••	•••	•••	kVA	R
Apparent Power L3	•••	•••	•••	kVA	R
Power Factor L1 IEC	•••	•••	•••		R
Power Factor L2 IEC	•••	•••	•••		R
Power Factor L3 IEC	•••	•••	•••		R
Power Factor L1 IEEE	•••	•••	•••		R
Power Factor L2 IEEE	•••	•••	•••		R
Power Factor L3 IEEE	•••	•••	•••		R
Imported Active Energy	•••	•••	•••	kWh	R
Imported Reactive Energy	•••	•••	•••	kvarh	R
Exported Active Energy	•••	•••	•••	kWh	R
Exported Reactive Energy	•••	•••	•••	kvarh	R
Partial Imported Active Energy	•••	•••	•••	kWh	R
Partial Exported Active Energy	•••	•••	•••	kWh	R
Imported Active Energy Wh	•••	•••	•••	Wh	R
Exported Active Energy Wh	•••	•••	•••	Wh	R
Imported Active Energy ARN	•••	•••	•••	kWh	R
Exported Active Energy ARN	•••	•••	•••	kWh	R
Imported Active Energy ARN Wh	•••	•••	•••	Wh	R
Exported Active Energy ARN Wh	•••	•••	•••	Wh	R
Number of Tariffs	•••	•••	•••		R
Active Tariff	•••	•••	•••		R
Physical Input Tariff	•••	•••	•••		R
Tariff Mode	•••	•••	•••		R
Set Tariff	•••	•••	•••		W
Imported Active Energy T1	•••	•••	•••	kWh	R
Imported Active Energy T2	•••	•••	•••	kWh	R
Imported Active Energy T3	•••	•••	•••	kWh	R
Imported Active Energy T4	•••	•••	•••	kWh	R
Imported Active Energy T5	•••	•••	•••	kWh	R
Imported Active Energy T6	•••	•••	•••	kWh	R
Imported Active Energy T7	•••	•••	•••	kWh	R
Imported Active Energy T8	•••	•••	•••	kWh	R
Exported Active Energy T1	•••	•••	•••	kWh	R
Exported Active Energy T2	•••	•••	•••	kWh	R
Exported Active Energy T3	•••	•••	•••	kWh	R
Exported Active Energy T4	•••	•••	•••	kWh	R
Exported Active Energy T5	•••	•••	•••	kWh	R
Exported Active Energy T6	•••	•••	•••	kWh	R
Exported Active Energy T7	•••	•••	•••	kWh	R
Exported Active Energy T8	•••	•••	•••	kWh	R
Imported Reactive Energy T1	•••	•••	•••	kvarh	R
Imported Reactive Energy T2	•••	•••	•••	kvarh	R
Imported Reactive Energy T3	•••	•••	•••	kvarh	R
Imported Reactive Energy T4	•••	•••	•••	kvarh	R
Imported Reactive Energy T5	•••	•••	•••	kvarh	R
Imported Reactive Energy T6	•••	•••	•••	kvarh	R
Imported Reactive Energy T7	•••	•••	•••	kvarh	R
Imported Reactive Energy T8	•••	•••	•••	kvarh	R
Exported Reactive Energy T1	•••	•••	•••	kvarh	R
Exported Reactive Energy T2	•••	•••	•••	kvarh	R
Exported Reactive Energy T3	•••	•••	•••	kvarh	R
Exported Reactive Energy T4	•••	•••	•••	kvarh	R
Exported Reactive Energy T5	•••	•••	•••	kvarh	R
Exported Reactive Energy T6	•••	•••	•••	kvarh	R
Exported Reactive Energy T7	•••	•••	•••	kvarh	R
Exported Reactive Energy T8	•••	•••	•••	kvarh	R
Partial Imported Active Energy T1	•••	•••	•••	kWh	R
Partial Imported Active Energy T2	•••	•••	•••	kWh	R
Partial Imported Active Energy T3	•••	•••	•••	kWh	R
Partial Imported Active Energy T4	•••	•••	•••	kWh	R
Partial Imported Active Energy T5	•••	•••	•••	kWh	R
Partial Imported Active Energy T6	•••	•••	•••	kWh	R
Partial Imported Active Energy T7	•••	•••	•••	kWh	R
Partial Imported Active Energy T8	•••	•••	•••	kWh	R
Partial Exported Active Energy T1	•••	•••	•••	kWh	R
Partial Exported Active Energy T2	•••	•••	•••	kWh	R
Partial Exported Active Energy T3	•••	•••	•••	kWh	R
Partial Exported Active Energy T4	•••	•••	•••	kWh	R
Partial Exported Active Energy T5	•••	•••	•••	kWh	R
Partial Exported Active Energy T6	•••	•••	•••	kWh	R
Partial Exported Active Energy T7	•••	•••	•••	kWh	R
Partial Exported Active Energy T8	•••	•••	•••	kWh	R
Imported Active Energy L1	•••	•••	•••	kWh	R
Imported Active Energy L2	•••	•••	•••	kWh	R
Imported Active Energy L3	•••	•••	•••	kWh	R
Exported Active Energy L1	•••	•••	•••	kWh	R
Exported Active Energy L2	•••	•••	•••	kWh	R
Exported Active Energy L3	•••	•••	•••	kWh	R
Imported Reactive Energy L1	•••	•••	•••	kvarh	R
Imported Reactive Energy L2	•••	•••	•••	kvarh	R
Imported Reactive Energy L3	•••	•••	•••	kvarh	R
Exported Reactive Energy L1	•••	•••	•••	kvarh	R
Exported Reactive Energy L2	•••	•••	•••	kvarh	R
Exported Reactive Energy L3	•••	•••	•••	kvarh	R
Secondary Voltage L1-N	•••	•••	•••	V	R
Secondary Voltage L2-N	•••	•••	•••	V	R
Secondary Voltage L3-N	•••	•••	•••	V	R
Secondary Voltage L1-L2	•••	•••	•••	V	R
Secondary Voltage L2-L3	•••	•••	•••	V	R
Secondary Voltage L3-L1	•••	•••	•••	V	R
Secondary Frequency	•••	•••	•••	Hz	R
Secondary Current L1	•••	•••	•••	A	R
Secondary Current L2	•••	•••	•••	A	R
Secondary Current L3	•••	•••	•••	A	R
Secondary Current Neutral	•••	•••	•••	A	R
Secondary Active Power Total	•••	•••	•••	W	R
Secondary Reactive Power Total	•••	•••	•••	var	R
Secondary Apparent Power Total	•••	•••	•••	VA	R
Secondary Power Factor Total IEC	•••	•••	•••		R
Secondary Power Factor Total IEEE	•••	•••	•••		R
Secondary Active Power L1	•••	•••	•••	W	R
Secondary Active Power L2	•••	•••	•••	W	R
Secondary Active Power L3	•••	•••	•••	W	R
Secondary Reactive Power L1	•••	•••	•••	var	R
Secondary Reactive Power L2	•••	•••	•••	var	R
Secondary Reactive Power L3	•••	•••	•••	var	R
Secondary Apparent Power L1	•••	•••	•••	VA	R
Secondary Apparent Power L2	•••	•••	•••	VA	R
Secondary Apparent Power L3	•••	•••	•••	VA	R
Secondary Power Factor L1 IEC	•••	•••	•••		R
Secondary Power Factor L2 IEC	•••	•••	•••		R
Secondary Power Factor L3 IEC	•••	•••	•••		R
Secondary Power Factor L1 IEEE	•••	•••	•••		R
Secondary Power Factor L2 IEEE	•••	•••	•••		R
Secondary Power Factor L3 IEEE	•••	•••	•••		R
Secondary Imported Active Energy	•••	•••	•••	kWh	R
Secondary Imported Reactive Energy	•••	•••	•••	kvarh	R
Secondary Exported Active Energy	•••	•••	•••	kWh	R
Secondary Exported Reactive Energy	•••	•••	•••	kvarh	R
Secondary Partial Imported Active Energy	•••	•••	•••	kWh	R
Secondary Partial Exported Active Energy	•••	•••	•••	kWh	R
Secondary Imported Active Energy T1	•••	•••	•••	kWh	R
Secondary Imported Active Energy T2	•••	•••	•••	kWh	R
Secondary Imported Active Energy T3	•••	•••	•••	kWh	R
Secondary Imported Active Energy T4	•••	•••	•••	kWh	R
Secondary Imported Active Energy T5	•••	•••	•••	kWh	R
Secondary Imported Active Energy T6	•••	•••	•••	kWh	R
Secondary Imported Active Energy T7	•••	•••	•••	kWh	R
Secondary Imported Active Energy T8	•••	•••	•••	kWh	R
Secondary Exported Active Energy T1	•••	•••	•••	kWh	R
Secondary Exported Active Energy T2	•••	•••	•••	kWh	R
Secondary Exported Active Energy T3	•••	•••	•••	kWh	R
Secondary Exported Active Energy T4	•••	•••	•••	kWh	R
Secondary Exported Active Energy T5	•••	•••	•••	kWh	R
Secondary Exported Active Energy T6	•••	•••	•••	kWh	R
Secondary Exported Active Energy T7	•••	•••	•••	kWh	R
Secondary Exported Active Energy T8	•••	•••	•••	kWh	R
Secondary Imported Reactive Energy T1	•••	•••	•••	kvarh	R
Secondary Imported Reactive Energy T2	•••	•••	•••	kvarh	R
Secondary Imported Reactive Energy T3	•••	•••	•••	kvarh	R
Secondary Imported Reactive Energy T4	•••	•••	•••	kvarh	R
Secondary Imported Reactive Energy T5	•••	•••	•••	kvarh	R
Secondary Imported Reactive Energy T6	•••	•••	•••	kvarh	R
Secondary Imported Reactive Energy T7	•••	•••	•••	kvarh	R
Secondary Imported Reactive Energy T8	•••	•••	•••	kvarh	R
Secondary Exported Reactive Energy T1	•••	•••	•••	kvarh	R
Secondary Exported Reactive Energy T2	•••	•••	•••	kvarh	R
Secondary Exported Reactive Energy T3	•••	•••	•••	kvarh	R
Secondary Exported Reactive Energy T4	•••	•••	•••	kvarh	R
Secondary Exported Reactive Energy T5	•••	•••	•••	kvarh	R
Secondary Exported Reactive Energy T6	•••	•••	•••	kvarh	R
Secondary Exported Reactive Energy T7	•••	•••	•••	kvarh	R
Secondary Exported Reactive Energy T8	•••	•••	•••	kvarh	R
Secondary Partial Imported Active Energy T1	•••	•••	•••	kWh	R
Secondary Partial Imported Active Energy T2	•••	•••	•••	kWh	R
Secondary Partial Imported Active Energy T3	•••	•••	•••	kWh	R
Secondary Partial Imported Active Energy T4	•••	•••	•••	kWh	R
Secondary Partial Imported Active Energy T5	•••	•••	•••	kWh	R
Secondary Partial Imported Active Energy T6	•••	•••	•••	kWh	R
Secondary Partial Imported Active Energy T7	•••	•••	•••	kWh	R
Secondary Partial Imported Active Energy T8	•••	•••	•••	kWh	R
Secondary Partial Exported Active Energy T1	•••	•••	•••	kWh	R
Secondary Partial Exported Active Energy T2	•••	•••	•••	kWh	R
Secondary Partial Exported Active Energy T3	•••	•••	•••	kWh	R
Secondary Partial Exported Active Energy T4	•••	•••	•••	kWh	R
Secondary Partial Exported Active Energy T5	•••	•••	•••	kWh	R
Secondary Partial Exported Active Energy T6	•••	•••	•••	kWh	R
Secondary Partial Exported Active Energy T7	•••	•••	•••	kWh	R
Secondary Partial Exported Active Energy T8	•••	•••	•••	kWh	R
Secondary Imported Active Energy L1	•••	•••	•••	kWh	R
Secondary Imported Active Energy L2	•••	•••	•••	kWh	R
Secondary Imported Active Energy L3	•••	•••	•••	kWh	R
Secondary Exported Active Energy L1	•••	•••	•••	kWh	R
Secondary Exported Active Energy L2	•••	•••	•••	kWh	R
Secondary Exported Active Energy L3	•••	•••	•••	kWh	R
Secondary Imported Reactive Energy L1	•••	•••	•••	kvarh	R
Secondary Imported Reactive Energy L2	•••	•••	•••	kvarh	R
Secondary Imported Reactive Energy L3	•••	•••	•••	kvarh	R
Secondary Exported Reactive Energy L1	•••	•••	•••	kvarh	R
Secondary Exported Reactive Energy L2	•••	•••	•••	kvarh	R
Secondary Exported Reactive Energy L3	•••	•••	•••	kvarh	R
Network Type	•••	•••	•••		R
CT Secondary	•••	•••	•••	A	R
CT Primary	•••	•••	•••	A	R
MID Certified	•••	•••	•••		R
Overflow Value	•••	•••	•••	kWh	R
Overflow Count Imported Active Energy	•••	•••	•••		R
Overflow Count Imported Reactive Energy	•••	•••	•••		R
Overflow Count Exported Active Energy	•••	•••	•••		R
Overflow Count Exported Reactive Energy	•••	•••	•••		R
Reset Partial Energies	•••	•••	•••		W
Power-On Count	•••	•••	•••		R
Button Press Count	•••	•••	•••		R
Modbus Address	•••	•••	•••		R/W
Modbus Serial Settings	•••	•••	•••		R/W
Vendor Name	•••	•••	•••		R
Product Code	•••	•••	•••		R
Firmware Version	•••	•••	•••		R
Vendor URL	•••	•••	•••		R
Product Name	•••	•••	•••		R
Model Name	•••	•••	•••		R
User Application Name	•••	•••	•••		R
Hardware Version	•••	•••	•••		R
Serial Number	•••	•••	•••		R
Site Code	•••	•••	•••		R
Production Day	•••	•••	•••		R
Production Year	•••	•••	•••		R

Loading registers…

Read the Hager ECR300C remotely

We load the templates onto the gateway and set up your portal, you connect it at your customer's site. Tell us briefly what you need and we'll send a proposal.

From €295 + €149/year.

Prefer to configure it yourself? Order the gateway in the shop·Or see the live demo first

EU-hosted

Data in the Netherlands and Germany

Open standard

Based on Modbus RTU/TCP

Free to browse

No account or payment required

European company

Based in the Netherlands

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