Re: Multi-drop network



Ted wrote:
I'm looking for a networking technology with the following requirements


1. Multidrop.No hub/router/switch 2. Up to 20 nodes 3. Transfer rate > 3MBytes/s 5. Supported by an off-the-shelf PC104 type card for an industrial PC (master) 5. Easy to implement in HW (slave)


Anyone got any ideas? CANBus comes close, but isn't fast enough.

With simple selfmade hardware this specification is doable. As physical medium choose RS422, RS485, LVDS, all on twisted pair. A separate clock line allows synchroneous hardware. As serializer/deserializer, have a look at CPLDs & Serdes.

Rene
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