Using Frame API for C, Need to change Data size for a TX Object

I need to Transmit different messages to the same ArbitrationID address. The Transmited messages have variable lengths. Can I call ncConfig on an object to change the NC_ATTR_CAN_DATA_LENGTH even after the call to ncOpenObject. Or do I have to Close the object and reopen it after the call to ncConfig?
Thanks!

Hello Genesis,
your second assumption is right. You do have to close, reconfigure and reopen the object in order to change the data length.
As long as you're using the CAN Object in the 'Transmit Data by Call' mode only, you might want to consider using the Network Interface for transmitting. When you use the Network Interface, you can change the ArbitrationID for each write call.
-B2k

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