Is it possible to use DAQ to simulate two modbus slaves at the same time?

[SteveChen]

I am going to test a modbus master which will communicate with more than one modbus slave. Is it possible to use DAQ to simulate two or more modbus slaves? If yes, how to do it?

I have PXI 8421 board with 2 RS-485 ports.

I appreciate your help.

Steven

[Remzi]

Hi Steven,

Since Modbus is a serial based protocol, you can use PXI-8421 board and simulate multiple Modbus slave. I assume you will be using LabVIEW. Here are some links you might want to check out.

http://ae.natinst.com/operations/ae/public.nsf/fca7838c4500dc10862567a100753500/2cd034f223c650e9862569570041995c?OpenDocument

http://www.softwaretoolbox.com/store/item_pages/itempage_63.asp

I hope this helps,
Best Regards,

Remzi A.
Applications Engineering
National Instruments