XL API for ARINC 429 and VN0601 Does Not Support Multiple Applications at a Single Channel
A single ARINC 429 channel can be used by one application exclusively only. This used ARINC 429 channel needs init access (see xlOpenPort in the XL Driver Library API Description). A second application does not get init access for the assigned channel and xlOpenPort returns an error. The second application cannot transmit/receive messages on this assigned channel.