5640r Communications Protocol

[ksalexander]

I have 2 5640r RIO devices that i'm trying to set up an encoder/decoder.  I need the two devices to communicate across either the analog or digital communications channel.  The problem we come across is that we're unsure if there is any sort of protocol with this communcation, or do we have to handle that ourselves.

The crux of the problem is that we don't want the decoder to decode anything until it has recieved something from the encoder.  Is this possible with the 5640r, or will it have to be added programmatically to our VI's?

[astromike]

I've been working with this board for a few weeks, but with what I understand from the documentation I have read, you would have to implement any protocol yourself.  For your application, you can probably come up with a simple protocol to use.  I do know that you should only drive the digital pins with one device at a time.  I think in the documentation it says you can destroy the board if you are driving a pin high and the receiver is doing the same.

If there is a preimplemented protocol with the board, the NI guys will probably respond.