Understanding Modbus Mapping

Modbus mapping allows the BAS Remote to communicate to Modbus serial slave devices and associate the Modbus variables within those devices to BACnet instances within the BAS Remote. This mapping is accomplished by using the M2B Project Builder software (an Excel file) to compile the desired Modbus Maps (Excel files) into a single csv (comma separated file) that is loaded into the BAS Remote. The BAS Remote utilizes the csv file to poll for the desired variables and create the BACnet instances.

Getting Started

To begin, create a directory in your computer that you will load the M2B files into. Download the M2B Project Builder software into that directory.

Create a sub directory within the directory you created above for the Modbus Maps that you need. Using the table below, download the Modbus Maps into that sub directory.

Company	Product Description	Part Number	Reference Document	Modbus Map
AirCare Automation	AirCare Variphase
Belimo	Gateway MP to Modbus RTU	UK24MOD
Circutor	Power Analyzer	CVM-NRG96
HARC-Modbus
Honeywell	Integrated Burner Control	S7810M
Northern Design	Power Meter	Cube 350
Power Distribution Inc. (PDI)	(BCMS) Branch Circuit Monitoring Systems
Renu Electronics	I/O Modules	FIOD 1600 (16 DC in)
Renu Electronics	I/O Modules	FIOD 0008 (8 isolated relay outs)
Renu Electronics	I/O Modules	FIOD 0808 (8 DC in, 8 relay out)
Schneider Electric	Power Meter	Power Logic 800		Under development
Veris	Power Meter	H8035
Veris	Power Meter	H8036
Wattnode	Power Meter	WNC-3Y-208-MB WNC-3Y-400-MB WNC-3Y-480-MB WNC-3Y-600-MB WNC-3D-240-MB WNC-3D-400-MB WNC-3D-480-MB

After you have all your files loaded you are now ready to open the project builder software and load Modbus Profiles into it.

Don’t see the file you need? Please call Joe Stasiek at 630-963-7070 to discuss having a profile built for your Modbus device.

Modbus 2 BACnet Device Profiles

This video provides step-by-step instructions for using the Modbus 2 BACnet Device Profiles. Common Modbus device profiles can be downloaded from the Contemporary Controls web site into Microsoft's Excel. The necessary points are selecting using a simple process in Excel. Once the selection is done, the resultant mapping file is uploaded into the BASremote. Watch the tutorial.

Additional Resouces

If you are using Excel 2003 and need the command bars, download the Ulitity file to restore the command bars.