Wireless I/O between

[FraserD]

Laptop (with 802.11b PCMCIA wireless card running LabVIEW 6.1) and desktop system (with 802.11b USB wireless card running LabVIEW 6.1) to send commands (from laptop) to start and stop LabVIEW programs (running on desktop) and download data (from desktop)?I am about to buy the hardware necessary to make this type of scenario possible.

I was wondering if anyone has had experience doing this and if it is possible to completely emulate the LabVIEW program which is running on the desktop, on the laptop through the wireless LAN. Alternatively, manual interrogation of produced data and sensor values etc., would suffice.

Can you foresee any problems?

[Andrew Madry]

Laptop (with 802.11b PCMCIA wireless card running LabVIEW 6.1) and desktop system (with 802.11b USB wireless card running LabVIEW 6.1) to send commands (from laptop) to start and stop LabVIEW programs (running on desktop) and download data (from desktop)?There shouldn't be any problems. The wireless LAN works much in the same way as a hard wired ethernet connection. You use the TCP/IP protocol. For your application you can use vi server to run an application on the desktop from the laptop. The only point I would make is regarding the brand of Wireless LAN card in the case that the desktop and laptop are some distance apart. Not all of them allow an external antenna to be attached particularly the USB ones. I know the Cisco and Lucent PCMCIA type adapters allow exteral antennae to be attached.
Another point - it's probably simplest if you run the same operating system on both computers.

[FraserD]

Laptop (with 802.11b PCMCIA wireless card running LabVIEW 6.1) and desktop system (with 802.11b USB wireless card running LabVIEW 6.1) to send commands (from laptop) to start and stop LabVIEW programs (running on desktop) and download data (from desktop)?Andrew,

Thank you for your help. I am looking at using a Bluetake Wireless USB LAN on each machine. It has an antenna.

In order to use the TCP/IP protocol with these devices, is it necessary to use some additional software, other than the drivers provided with the device?

Thanks in advance,

Fraser

[Andrew Madry]

Laptop (with 802.11b PCMCIA wireless card running LabVIEW 6.1) and desktop system (with 802.11b USB wireless card running LabVIEW 6.1) to send commands (from laptop) to start and stop LabVIEW programs (running on desktop) and download data (from desktop)?Fraser
There shouldn't be any other software needed other than the drivers. It's all bulit into LabVIEW. There are several options for how to communicate between computers: Datasocket, straight TCP/IP or UDP, or the VI server. For using a peice of data acquisition hardware on another computer there is Remote Device Access (RDA) which we've found useful in several apps.

Re the antenna I was referring to an antenna that can be physically plugged into the wireless LAN device rather than one built in. This allows you to use custom antennae to meet range requirements if the standard one doesn't suit. In many of our applications we've had the computers some distance apart and the built in antennae aren't good enough.

regards

Andrew

[FraserD]

Laptop (with 802.11b PCMCIA wireless card running LabVIEW 6.1) and desktop system (with 802.11b USB wireless card running LabVIEW 6.1) to send commands (from laptop) to start and stop LabVIEW programs (running on desktop) and download data (from desktop)?Andrew,

Do you know of any wireless usb adaptors which have a jack for an external antenna?

thanks in advance,

Fraser