Hello, It is possible to command a Modbus device with LabVIEW. You will need some sort of OPC server that speaks Modbus. Once you have that, you can use the Datasocket VIs in LabVIEW to communicate with your Modbus device (via the OPC server). If you do not have an OPC server, National Instruments does sell an OPC server that supports Modbus. This OPC server is called the Industrial Automation OPC Server (http://sine.ni.com/apps/we/nioc.vp?lang=US&pc=mn&cid=4584). So as you can see, the process is not too difficult. Once you have installed the OPC server and configured it to talk to your Modbus device, the Datasocket API in LabVIEW will be able to connect to the Modbus device via the OPC server.
Hope this answers your question. Please let us know if you have any additional questions on this. Have a nice day! A. Saha Applications Engineering National Instruments
