Vista Laptop USB RS 485 Converter
I can't get a USB x RS485 converter to work on a Vista laptop. I've tried Belkin and another brand. Anyone have any suggestions?
I've also tried a TCP IP x RS485 converter (BF-430) without success.
You dont have a seral port?? I am using vista and it works fine. I think the Dell Latitude is one of the few that still put a seral port in.
None of our laptops have serial ports.
Try a Digi Edgeport/1, it is a USB/Serial converter, they are expensive ($90.00-$100.00) but they come with a utility (in the Win98 folder) on the CD to assign the device to a specific COM port. Then use an RS-232/RS-485 converter (B&B Electronics p/n 485SD9TB). I haven't tried it with Vista but they always work on XP laptops w/o serial ports. I haven't had any luck with a USB to RS-485 adapter, the above works (on XP).
Your problem may be that Vista assign's the adapter to a random COM port. Some software requires a specific COM port (like HVAC-Pro from JCI, COM1 or COM2 Only !). The 2 device thing is expensive but you can always use the 232/485 with a regular serial port.
We have stayed with XP simply because none of the major Mfgrs support Vista 100%, you may have to setup something to be able to use XP on those laptops, dual boot/virtual machine. Ask an IT guy what your options are.
If sense were so common everyone would have it !
All opinions expressed are my own. Any advice provided is based on personal experience, generally accepted fact or publicly available information. As such, it is worth exactly what you paid for it, not a penny more not a penny less !!
This might help
I've used the USB-COMi-SI-M with Win XP but you can find a Vista driver for it. Here is the web page for it
My Trane Rover kit came with a USB to RS-485 converter. (Actually, it's a USB to RS-232 and a RS-232 to RS-485 converter in one package.) Since I use PCMCIA RS-485, I let another co-worker use it on his Vista laptop, and it works with no problems. If I ever get my hands back on it, I will try to dechiper who made the darn thing. (Like Quatech makes the RS-485 card, and Echelon made the Lon adapter.)
BAS/BMS Technician/Computer Technician
The definition of cruel joke is when you start work in BAS, and you run into your old T&B employer on the job.
Thanks for the help. Looks like I have several options. I will post my progress.
B&B Electronics makes the Edgeport but they also have a straight USB to 485/422 converter. The part number is USPTL4. They also have an optically isolated one. They are very expensive ($120 for the USPTL4 and $140 for the isolated), but they work well. I use mine to do everything from troubleshoot MS/TP busses to download N2. The datasheet says that it works with Vista.
Thanks for all the help.
I'm still investigating all of these.
I did get the Vista drivers for the Keyspan USB x 232 from Tripplite.com I connected a 232 x 485 converter made by 3One Data Communications Tech and also to a converter made by ICP.com.
Both these converters work connected directly to a serial port running XP.
When I connect the converters to the USB x 232 converter on the Vista machine it will receive data from my device but I get an error when I send data.
Any additional help is appreciated
I give up. Can anyone suggest a Dallas Tx vendor that can fix me up with a working solution?
USB to RS485
Ethernet to RS485
PCMCIA to Rs485
USB to RS485 Ethernet to RS485
pc adapter world: www.shopsintech.com