Can i communicate with labview, using ethernet or seriel modbus.

Is it possible to communicate with a i/o module and labview. I can communicate with ethernet, canbus(cscan, devicenet), rs232(modbus).
What is the easiest solusion.
Is it necessary to buy PC-cards for the communication or have only to download some drivers.
Thx

Hello,
To communicate with a CAN/DeviceNET bus you will need an interface card in your PC. NI has such cards along with LabVIEW VIs:
http://sine.ni.com/apps/we/nioc.vp?cid=1329〈=US
http://sine.ni.com/apps/we/nioc.vp?cid=1311〈=US
To communicate with Modbus, you will NOT need any special cards but you do need software drivers for it (you'll obviously need an Ethernet card for TCP/IP and Serial port for RS232). There are several options for these drivers, however:
1. Write your own driver VIs. You'll basically implement the Modbus protocol in LabVIEW. Modbus is a simple and open protocol.
2. Try to search the Net for such existing VIs. I believe someone has already written such Modbus VIs.
3. Use the Industrial Automatio
n OPC Servers suite from NI:
http://sine.ni.com/apps/we/nioc.vp?cid=4584〈=US
4. Use any third-party OPC Server for Modbus.
NOTE: in case you opt 3 or 4 above: though you may use DataSocket in LabVIEW as an OPC Client, you may want to consider LabVIEW-DSC which has a built-in OPC Client, and hence better support for OPC.
Hope this gives you some options.
Regards,
Khalid

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