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Building Management System BMS - building automation

Building Management System BMS – Comprehensive Solutions for Automation and Integration

A Building Management System (BMS) is a centralized platform that enables intelligent monitoring and control of building infrastructure, such as HVAC, lighting, access, and energy. To ensure smooth data exchange and automation across different technologies, a BMS requires specialized converters, communication modules, and industrial networking equipment. At CONSTEEL, we offer a full range of industrial-grade solutions to support efficient, reliable, and scalable BMS deployments.

M-Bus Converters – Integrating Energy and Water Meters

M-Bus to Modbus converters enable BMS platforms to retrieve real-time readings from thermal, electric, gas, and water meters. They are essential for accurate energy monitoring, cost allocation, and integration with building analytics systems.

DALI Converters – Smart Lighting Management

DALI converters support the integration of lighting systems into the BMS architecture. They offer advanced control over individual luminaires, groups, and scenes. These devices help reduce energy costs and enhance occupant comfort through automation.

BACnet, Modbus, KNX Converters – Multi-Protocol Communication

Our protocol converters bridge communication between BACnet IP, Modbus RTU/TCP, and KNX systems. They are key components for linking HVAC units, lighting controls, fire systems, and access control into a unified BMS dashboard.

AC Communication Modules – BMS Control for Air Conditioning

Specialized communication modules allow direct integration of split units and VRF/VRV air conditioners (Daikin, LG, Mitsubishi, etc.) into BMS networks. These devices enable centralized temperature, mode, and schedule control across all zones.

I/O Modules – Digital and Analog Signal Handling

Input/output modules expand the control capabilities of your BMS. They collect signals from sensors and switches, and control actuators, fans, relays, or dampers. Ideal for HVAC, alarm, shading, and access control systems.

Industrial Switches – Reliable Ethernet Networks

Our industrial-grade Ethernet switches are designed for high-performance BMS networks. They feature wide temperature ranges, redundant power supply, VLAN, QoS, and ring redundancy support – ensuring network stability in harsh environments.

Serial Device Servers – Integration of RS232/RS485 Devices

Serial servers allow legacy devices with RS232 or RS485 interfaces to communicate over IP-based BMS platforms. Perfect for extending the life and connectivity of meters, controllers, and older field devices.

Fiber Media Converters – Long-Distance Communication

Fiber media converters provide reliable data transmission over long distances and ensure electromagnetic interference resistance. Crucial in large buildings, campuses, and industrial areas where wired Ethernet cannot reach.

Frequently Asked Questions (FAQ)

What is a Building Management System?
A BMS is an integrated platform that enables the automated control and monitoring of building systems, such as HVAC, lighting, and power distribution, improving comfort, energy efficiency, and operational safety.

Why are protocol converters necessary in BMS?
They ensure compatibility between devices using different communication standards. This enables centralized control and expands integration across building technologies from various manufacturers.

Which devices can be integrated into a BMS?
HVAC units, lighting systems, power meters, access control, fire alarms, and other building subsystems – using converters, I/O modules, and network equipment.

Is BMS suitable for industrial environments?
Yes – with our robust industrial solutions such as Ethernet switches and serial servers, BMS platforms can operate reliably even in harsh industrial conditions.

Explore our full product offering to build a powerful and future-proof Building Management System. Our team is ready to assist you with technical support and custom-tailored solutions.


HD67603-485-A1 - PROFINET to Modbus RTU slave RS-485 converter with isolation, enclosure type A, for DIN rail HD67603-485-A1 - PROFINET to Modbus RTU slave RS-485 converter with isolation, enclosure type A, for DIN rail
2 year warranty Quantity discount 3-4 days
Brand: ADF Web Model: HD67603-485-A1
Industrial PROFINET master to Modbus RTU slave converter, port RS-485, housing type A (slim), DIN rail mount.  The HD67603-485-A1 is an industrial-grade protocol converter that facilitates seamless communication between a PROFINET network and a Modbus RTU Master via RS-485 interface. It is designed specifically for industrial applications where high reliability, robust isolation, and ease of configuration are required. The device enable..
1 804,80 zł
HD67616-422-A1
2 year warranty Quantity discount 3-4 days
Brand: ADF Web Model: HD67616-422-A1
Industrial NMEA0183 to Modbus slave converter, housing type A (slim), DIN rail mount. Ethernet Switch Inside for enter/exit connection.The HD67616 is a NMEA0183 to Modbus Slave Converter and it allows you to connect some NMEA0183 devices (for example fluid level sensors, management of heat and cold, lights...) with a Modbus net (for example a PLC, an HMI, etc..) in order to exchange the informations between the networks. In HD67617-422-A1 you hav..
1 804,80 zł
HD67616-A1
2 year warranty Quantity discount 3-4 days
Brand: ADF Web Model: HD67616-A1
Industrial NMEA0183 to Modbus slave converter, housing type A (slim), DIN rail mount. The HD67616 is a NMEA0183 to Modbus Slave Converter and it allows you to connect some NMEA0183 devices (for example fluid level sensors, management of heat and cold, lights...) with a Modbus net (for example a PLC, an HMI, etc..) in order to exchange the informations between the networks. Specifications:Ports: 1xRS232; 2xRS485; 1xEthernetData Rates RS232: Up to ..
1 804,80 zł
HD67617-422-A1 HD67617-422-A1
2 year warranty Quantity discount 3-4 days
Brand: ADF Web Model: HD67617-422-A1
Industrial NMEA0183 to Modbus TCP slave converter, housing type A (slim), DIN rail mount.The HD67617 is a NMEA0183 / Modbus TCP Slave Converter and it allows you to connect some NMEA0183 devices (for example fluid level sensors, management of heat and cold, lights...) with a Modbus TCP net (for example a PLC, an HMI, etc..) in order to exchange the informations between the networks. In HD67617-422-A1 you have available a RS422 port that can be us..
1 804,80 zł
HD67617-A1
2 year warranty Quantity discount 3-4 days
Brand: ADF Web Model: HD67617-A1
Industrial NMEA 0183 to Modbus TCP converter, housing type A (slim), DIN rail mount. HD67617 is a NMEA0183 / Modbus TCP Slave Converter and it allows you to connect some NMEA0183 devices (for example fluid level sensors, management of heat and cold, lights...) with a Modbus TCP net (for example a PLC, an HMI, etc..) in order to exchange the informations between the networks. In HD67617-422-A1 you have available a RS422 port that can be use for NM..
1 804,80 zł
HD67621-232-A1
2 year warranty Quantity discount 3-4 days
Brand: ADF Web Model: HD67621-232-A1
Industrial S7comm converter, type A housing (narrow), DIN rail mounting, two Ethernet ports, RS232 serial portThe HD67621-232-A1 model is an industrial converter equipped with a wall-mount function 35 mm DIN rail. The operating temperature range from -40°C to +85°C allows the device to be used even when implementing projects in difficult industrial conditions. This model requires a power supply range of 8-24 VAC; 12-35 VDC.Specification:Ports: 2x..
1 804,80 zł
HD67621-422-A1
2 year warranty Quantity discount 3-4 days
Brand: ADF Web Model: HD67621-422-A1
Industrial S7comm converter, type A housing (narrow), DIN rail mounting, two Ethernet ports, RS422 serial portThe HD67621-422-A1 model is an industrial converter equipped with a wall-mount function 35 mm DIN rail. The operating temperature range from -40°C to +85°C allows the device to be used even when implementing projects in difficult industrial conditions. This model requires a power supply range of 8-24 VAC; 12-35 VDC.Specification:Ports: 2x..
1 804,80 zł
HD67621-485-A1
2 year warranty Quantity discount 3-4 days
Brand: ADF Web Model: HD67621-485-A1
Industrial S7comm converter, type A housing (narrow), DIN rail mounting, two Ethernet ports, RS485 serial portThe HD67621-485-A1 model is an industrial converter equipped with a wall-mount function 35 mm DIN rail. The operating temperature range from -40°C to +85°C allows the device to be used even when implementing projects in difficult industrial conditions. This model requires a power supply range of 8-24 VAC; 12-35 VDC.Specification:Ports: 2x..
1 804,80 zł
HD67622-232-A1
2 year warranty Quantity discount 3-4 days
Brand: ADF Web Model: HD67622-232-A1
Industrial Modbus RTU slave to S7comm agent converter, housing type A (slim), DIN rail mount. HD67622 allows you to connect a Modbus Master net (for example a PLC, SCADA System, etc) with a S7comm Manager net (for example a PC, Supervisory System, etc) in order to exchange the informations between the networks. Converter is easy to configure thanks to free SW67622 software.Configuration:Thanks to the SW67622 software on your PC you can:Define the..
1 804,80 zł
HD67622-422-A1
2 year warranty Quantity discount 3-4 days
Brand: ADF Web Model: HD67622-422-A1
Industrial Modbus RTU slave to S7comm agent converter, housing type A (slim), DIN rail mount. HD67622-422-A1 allows you to connect a Modbus Master net (for example a PLC, SCADA System, etc) with a S7comm Manager net (for example a PC, Supervisory System, etc) in order to exchange the informations between the networks. Converter is easy to configure thanks to free SW67622 software.Configuration:Thanks to the SW67622 software on your PC you can:Def..
1 804,80 zł
HD67622-485-A1
2 year warranty Quantity discount 3-4 days
Brand: ADF Web Model: HD67622-485-A1
Industrial Modbus RTU slave to S7comm agent converter, housing type A (slim), DIN rail mount HD67622 allows you to connect a Modbus Master net (for example a PLC, SCADA System, etc) with a S7comm Manager net (for example a PC, Supervisory System, etc) in order to exchange the informations between the networks. Converter is easy to configure thanks to free SW67622 software.Configuration:Thanks to the SW67622 software on your PC you can:Define the ..
1 804,80 zł
HD67629-B2
2 year warranty Quantity discount 3-4 days
Brand: ADF Web Model: HD67629-B2
Industrial S7comm to MQTT converter, type B housing (wide ), DIN rail mounting, 1x Ethernet portThe HD67629-B2 model is an industrial converter equipped with a DIN rail mounting function 35mm. The operating temperature range from -40°C to +85°C allows the device to be used even when implementing projects in difficult industrial conditions. This model requires a power supply range of 8-24 VAC; 12-35 VDC.Specification:Ports: 1xEthernetEthernet prot..
1 804,80 zł
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