SELEC EM2M-1P-C-100A Multifunction energy meter Modbus communication with LabVIEW

Yes, it is very easy to communicate any Modbus RTU slave devices with LabVIEW.

Here we are going to see how the communication happens with the SELEC EM2M-1P-C-100A Multifunction energy meter (RS485 Modbus RTU) and LabVIEW.

To establish this communication we should know the serial communication parameters and Modbus register address list of the slave device.

 

PARAMETERS:

Interface standard and protocol             -           RS485 AND MODBUS RTU

Communication address / Slave ID       -           1-255

Data types                                             -           Float and Integer

Transmission Speed / Baudrate            -           9600 bps

Parity                                                     -           None, Odd, Even

Stop bits                                                -           1 or 2

MODBUS REGISTER ADDRESS LIST:

Address	Parameter
30001	Total Active Energy
30015	Active Power
30021	Voltage L-N
30023	Current
30025	Power Factor
30027	Frequency

 

CONNECTION DIAGRAM:

LabVIEW Program:

               LabVIEW program for communicating Modbus RTU slave device is given below,

LabVIEW Version – 2013

LabVIEW Front End

LabVIEW Block Diagram 

Hope this blog will help you to get an idea for communicating RS485 Modbus RTU salve device ( energy meter single phase or three phase or any Modbus slave device) with LabVIEW program, for more relevant details follow our blog.