USB Relay Borad

[Elyan_wisam]

Hi all

I am using USB Relay Borad form DENKOVI company , I want to control it using labview

regarding to the company I must use FTDI  D2XX Function for read and write

can any one help me with this

any one use this kind of devcie before ?

thank

[yenknip]

According to their website, the USB boards actually mount an on board RS232 converter. 

http://www.denkovi.com/productv/66/usb-16-channel-relay-module-rs232-controlled-12v-ver-1.html

At the bottom of the page is some example code for controlling the relays. You can communicate with the RS232 on the relay board with LabVIEW VISA VIs

[Moi²]

Most of the relay boards come with FTDI (virtual COM Port). I know a board that only needs the VCP Driver. After this you can send the commands via VISA on the virtual com port. If you have to use FTD2XX.DLL, create your main vi, include the FTD2XX.DLL via dll node and select the function you want to execute.

You have to define the input and export value for the specific function. You will find them in this document:

http://www.ftdichip.com/Support/Documents/ProgramGuides/D2XX_Programmer%27s_Guide%28FT_000071%29.pdf