I see zero or no values for active energy but the other registers work. What is wrong?

The active energy register at address 27 is a uint32 (two consecutive 16-bit registers). Make sure your gateway is configured to read a 32-bit unsigned integer at that address rather than a single 16-bit register.

Communication fails after wiring. What should I check?

Verify that the baud rate is set to 19200 and parity is set to odd on both the meter and the Modbus gateway. Also confirm the A and B RS-485 lines are not swapped.

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

Yes. Assign a unique Modbus slave address to each meter and ensure the bus is properly terminated at both ends. Add a separate template instance in ModbusCloud for each meter with its corresponding address.

Are there firmware requirements for the meter to support Modbus RTU?

Saia-Burgess 1-phase energy meters with an RS-485 port generally support Modbus RTU out of the box. Consult the meter datasheet to confirm the register map matches addresses 27 and 35 through 39.

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Free Modbus template: Saia-Burgess Energy Meter 1-Phase | ModbusCloud

///Saia-Burgess Energy Meter 1-Phase

Modbus RTU

Saia-Burgess Energy Meter 1-Phase

Name: Saia-Burgess Energy Meter 1-Phase
Brand: Saia-Burgess
SKU: 55761b19-5df6-4b5f-abf5-aceee5b09562

Saia-Burgess

Reads energy and power data from a Saia-Burgess 1-phase energy meter via Modbus RTU.

Overview

This template reads energy and power data from a Saia-Burgess 1-phase energy meter via Modbus RTU. It fetches active energy, active and reactive power, voltage, current, and power factor. All registers are read-only.

Key readings

Active Energy 1st Phase
Active Power 1st Phase
Reactive Power 1st Phase
L1-N Voltage
Phase 1 Current
Power Factor cos phi

Use cases

Monitor real-time voltage, current, and power factor on a live cloud dashboard for a customer site.
Track cumulative active energy consumption per circuit to support tenant billing or sub-metering.
Create an alert when power factor drops below 0.9 to detect potential capacitive or inductive load issues.
Compare active and reactive power trends over time to identify inefficient equipment.
Generate daily or monthly energy reports for facility managers or building owners.

Installation

1Wire the Modbus gateway (MCG or MLP series) to the RS-485 terminals of the Saia-Burgess energy meter using a twisted pair cable with correct A/B polarity.
2Set the Modbus slave address on the Saia-Burgess meter to a unique value that does not conflict with other devices on the same bus.
3Configure the Modbus gateway serial port to 19200 baud, odd parity (1), and 8 data bits to match the meter defaults.
4Import the Saia-Burgess Energy Meter 1-Phase template from the ModbusCloud template library into your project.
5Assign the correct slave address in the template settings and verify that live readings appear on the ModbusCloud dashboard.

Things to watch for

I see zero or no values for active energy but the other registers work. What is wrong?: The active energy register at address 27 is a uint32 (two consecutive 16-bit registers). Make sure your gateway is configured to read a 32-bit unsigned integer at that address rather than a single 16-bit register.
Communication fails after wiring. What should I check?: Verify that the baud rate is set to 19200 and parity is set to odd on both the meter and the Modbus gateway. Also confirm the A and B RS-485 lines are not swapped.
Can I connect multiple Saia-Burgess meters on one RS-485 bus?: Yes. Assign a unique Modbus slave address to each meter and ensure the bus is properly terminated at both ends. Add a separate template instance in ModbusCloud for each meter with its corresponding address.
Are there firmware requirements for the meter to support Modbus RTU?: Saia-Burgess 1-phase energy meters with an RS-485 port generally support Modbus RTU out of the box. Consult the meter datasheet to confirm the register map matches addresses 27 and 35 through 39.

Registers (6)

6 read / 0 write

Name	Address	Function	Type	Unit	Access
Active Energy 1st phase	27	FC03	uint32	kWh	R
Active Power 1st phase	37	FC03	uint16	kW	R
Reactive Power 1st phase	38	FC03	uint16	kvar	R
L1-N Voltage	35	FC03	uint16	V	R
Phase1 Current	36	FC03	uint16	A	R
Power Factor cos φ phase1	39	FC03	uint16		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.

See the live demo How it works

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Specifications

Protocol: Modbus RTU
Brand: Saia-Burgess
Registers: 6
Compatible models: Energy Meter 1-Phase
Last updated: 17 April 2026

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