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mbus A429 Send Labels At


Periodic transmit of labels.

ARINC 429 Sent Labels At Rates function transmits labelCount ARINC 429 words onto any port with adjustable word rates. ARINC 429 words are composed of the labels and data.

The SDI Discriminate parameter is an optional advanced parameter. It can be kept unwired or wired to false for non-advanced needs.

When SDI Discriminate is set to true, the scheduler treats outgoing messages using the same label but different Source-Destination Identifiers (SDI) as separate messages.

The SDI is the two Least Significant Bits of the data. It serves as a label extension and can help differentiate two identical units in the same environment.

When SDI discrimination is enabled, the pair label-SDI are the message ID and each label-SDI pair can have its own rate.

error in in error conditions that occur before entering the function
portHandle in reference to the configured port
labelCount in number of ARINC 429 labels sent to the data bus
labels in ARINC 429 labels
data in ARINC 429 data
rates in ARINC 429 word rates in milliseconds
sdiDiscrimination in Advanced settings, refer to above description for details. Set to false by default
portHandle out reference to the configured port
error out out error information
function return out function execution status

Handle parameters are available as input and output. Output is a copy of the input and may be used to daisy chain successive VIs and reduce wire density.


Available in Multibus VI 1.0 and later.

See Also

mbus A429


A429 Schedule
A429 Suspend
A429 Update