HVAC Modbus SL

Current version
Article number

HVAC Modbus Library. Send and receive Modbus data points via RTU (serial) or TCP. Finished function blocks many manufacturers and devices from building automation (www.hvac-automation.com).

Without purchasing a license (just download), the HVACLibrary SL runs for 30 minutes without functional limitations and disconnects automatically (demo).

Product Description

The HVAC Modbus SL contains function blocks for Modbus communication. The library is designed for the CFC Editor. Via a master block (serial or TCP) “slave” devices are attached. Slave devices can be single Modbus queries or completely finished device blocks from many manufacturers. This simplifies the commissioning extremely!

The HVAC Modbus Library can be perfectly complemented with the decentralized powerIO® system, which is based on working with communicative Modbus sensors and actuators. Serial stations are immediately converted to TCP and can be queried via a CODESYS controller. Further information about the decentralized system under http://www.powerio.com.

The HVAC Modbus SL library runs independently from the CODESYS Modbus library. There is no need to use a controller with CODESYS Modbus library.

Detailed Wiki on www.hvac-automation.com.

In the HVAC Visu Library from the HVAC Building Automation Package SL there are Visu Frames matching the blocks.


Programming System

CODESYS Development System V3.5.14.0

Target System

CODESYS Control V3.5.14.0

Supported Platforms / Devices

Tested devices: CODESYS Control Win V3, Raspberry Pi, Beagle Bone Black, WAGO PFC 200, Janztec emPC-a/iMX6 Notice: Use the project ‘Device Reader’ to find out the supported features of your device. ‘Device Reader’ is available for free in the CODESYS Store.

Additional Requirements





License activation optional on CODESYS Key or CODESYS Soft Key.

Required Accessory



powerIO GmbH

Eberhardstr. 65
70173 Stuttgart



This product includes technical support from the original software vendor. To submit your request, please contact the vendor directly.


powerIO GmbH

Eberhardstr. 65
70173 Stuttgart



Additional Downloads


Version History

Version Release Notes Release date

Initital Release



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