mbus A717 Rx Port Config.vi
Description
A717 Rx Port Config function sets up the selected receive port configuration. This function opens a port and provides a portHandle. This portHandle must be wired to all subsequent VIs that uses this port.
| Parameters | ||
|---|---|---|
| error in | in | error conditions that occur before entering the function |
| sessionHandle | in | reference to the current Multibus session block handle |
| portNumber | in | receive port number to configure |
| bitEncoding | in | the way bits are encoded: Harvard Biphase or Bipolar RZ |
| subFrameSize | in | subframe size in number of words |
| rawMode | in | Must be kept to False (default) for standard ARINC 717 subframe-based receive method. Can be set to True (advanced), to enabled raw mode. More information provided below. |
| loopback | in | ARINC 717 words are looped back from Tx to Rx ports |
| sessionHandle | out | reference to the current Multibus session block handle |
| 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.
| Receive mode | |
|---|---|
| Standard | 12-bit words are assembled into subframes with correct subFrameSize. Four synchronization words must be detected before data starts to be returned to user application. Each subsequent subframe must have a valid synchronization word to be returned to user application |
| Raw mode | Data stream is parsed into 12-bit long words and returned to user application as it is. There is no synchronization word needed and no subframe assembled. |
Note that both modes require to correctly set subFrameSize to adjust reading speed.
Availability
Available in Multibus VI 1.2 and later.
See Also
mbus A717 Port Config.vi mbus A717 Tx Port Config.vi mbus A717 Port Close.vi