read status of digital output

[tonitpp]

Hi,

I use LabVIEW 7 Express with an Advantech acquisition card PCI-1711. How can I read the status of digital ouputs? I would like to read a word to see which output is on or off.

I use the drivers for labVIEW that Advantech give with its cards.
Thanks,

ToNi.

[EdDickens]

I"ve not used Advantech hardware or drivers, but it should be similar to using NI hardware and NI-DAQ.

The usual procedure is to first configure the channels to be read, then read them. So, there should be a Configure VI and a Digital Read VI.

Possibly the drivers provided by Advantech have example programs that show how to do basic operations. Have a look through the directory where all of their drivers were installed or in the Example directory under LabVIEW.

Ed

[tonitpp]

Yes, you are right but my problem is that I can write word (digital output) and all is ok but I can't read a work (for read the status of digital output), it doesn't work. I use the same port for writting and reading, my port is 9000 Hex. Perhaps a bug in Advantech LabVIEW driver?

I attach here the example that comes with advantech, write word works but read word doesn't work and I don't understand why, I use the same port for both. I post another thread here, sorry, I attach the example here again.

I would like if there is someone that has the same problem as me working with advantech labview driver.

Thanks,

ToNi.

[Cristobal]

Hello,

maybe you could confirm with Advantech if that board allows write/read from the same port without modifying the inicial configuration.

I hope this helps.

Regards

crisR

[EdDickens]

If this is an example that ships with the driver, I'd think it should work. But reading and writing to the same port without closing and reopening could be a problem. Most of the time you can only do a read or a write.

Unless some one else here has used Advantech and knows what's going on, I'd suggest contacting Advantech to get some help from them. Without having any of their equipment, I have no way to test anything.

Ed

Message Edited by Ed Dickens on 12-21-2005 08:52 AM

[jtc]

Hi Toni,

Sorry for coming to your old thread. I am also evaluating and might use for my project Advantech's ADAM-4017 (analog input module) and ADAM-4055 (digital input/output module). I will connect them in one RS-485 network. I need to get all simultaneous data everytime from all the modules. I would be very thankful for any advise based on your previous experience.

Is it really available to get data while connecting them all in one network?

How can I read all the digital input and output channels?

Thank you for any advise.

Bong