Hi,

I want to communicate one PC with an instrument: send and receive data with LabVIEW language and in MODBUS. I use a serial port RS 485 and I have already NIMODBUS.lib but i can't make relation between VIs.

Can You help me?

Sincerly,

Youssef

 

Hi,

My name is ricardo and I work in scada systems. What you need is: use a simulate MODBUS which poll data before to try to comunicate with pc in LABVIEW. Can use two PCs with HYPERTERM to verify the operation. Don't forget If you have a DEVICE with RS485 port, you need RS232/RS485 converter for use a COM port PC. Be sure that you have comunication in the same parameters example 9600,8,n,1. in both devices. And the PC must be MASTER and other devices must be SLAVES.

If you need more information or need the simulate software can write me.
[email protected]
bye.

RICARDO CUESTA (Colombia)