Device Net Driver

T

Thread Starter

Tom Bray

Sorry I haven't been around much, my consulting work back up and between that, keeping a couple of networks running, and some other side things I do on the side, I haven't much time left over.

Anyway, I may have to be doing some stuff with DeviceNet and while doing some surfing, I accidently stumbled onto this site. I haven't checked out the details, but it looks like and ISA/PC104 and PCMCIA driver for standard "CAN" cards.

I didn't see a link on the PuffinPLC web site, so here it is:

http://www.spectra-one.com/dn5136man.html (description)

ftp://metalab.unc.edu/pub/Linux/hardware/drivers/ss5136dn-1.3.tar.gz (the code)


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C

Curt Wuollet

Hi Tom

I pointed someone to this on the automation list, but you're right, we don't have a link here. This at least gets it in the mail archive. The sst board is kinda pricey or I'd be using one. This is more like a library than a driver, the board has its own processor. If you hear of anyone using one, we could use some info.

Thanks

cww

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T

Thomas B. O'Hanlan

hi curt! i believe DeviceNet uses RS-485 serial asynchronous UART data. The driver and application must know some of DeviceNet protocol specifics, but I'm pretty sure you can use regular RS-485 serial ports. Of course I would
recommend Sealevel Systems Ultra Series PCI and ISA boards with automatic RS-485 support.

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You are thinking of DH-485 which is RS-485 and uses one of the Data Highway protocols, it might even be DH+. I haven't had much contact with it and it was developed after I left AB.

DeviceNet is a CAN based protocol (Controller Area Network) which can run up to 500Mbit/Sec in the DeviceNet mode and 1Mbit/Sec in native CAN mode. The nodes are very cheap to create in quantity, many of the Motorola and Intel (with multiple sources) micro-controllers have CAN built in and it then only requires a $0.50 bus driver to complete the package. The network was
originally developed in Europe for automotive applications, like running brake lights, so it is pretty robust to boot.

That SSS card probably isn't cheap, I'll be checking the price in a day or two, but it sure makes life easy.

I haven't found a cheap PC to CAN interface, if someone knows of one I would like to hear about it, especially if there is PC-104 version available.

Tom Bray


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R

Robert Schwebel

On Wed, 9 Aug 2000, Tom Bray wrote:
> I haven't found a cheap PC to CAN interface, if someone knows of one I would
> like to hear about it, especially if there is PC-104 version available.

Janz (http://www.janz.de) has PC/104 CAN cards with Linux support, but I don't know about the price (just ask them).

Robert
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