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mbus A429 Update


The A429 Update Labels function updates data attached to multiple ARINC 429 labels in a periodic transmit. The ARINC 429 labels must have already been created and have its rate defined. Refer to mbus A429 Send Labels At Rates to first add ARINC 429 labels.

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

When SDI 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 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 out number of ARINC 429 words to update
labels in ARINC 429 labels to update
data in ARINC 429 new data to override
sdi 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 Send Labels At


A429 Update