National Instruments AutoCode NI MATRIX - Manual (Page 9)

Contents
© National Instruments Corporation ix AutoCode Reference
System External Interface Layer .....................................................................5-7
Discrete Subsystem Interface Layer ................................................................5-8
Single-Rate System ...........................................................................5-8
Multi-Rate System ............................................................................5-8
Sample and Hold ...............................................................................5-8
Static Data Within Subsystems .......................................................................5-9
iinfo ...................................................................................................5-9
R_P and I_P ......................................................................................5-9
State Data ..........................................................................................5-9
Procedure Data ..................................................................................5-10
Pre-init Phase...................................................................................................5-10
Init, Output, and State Phases..........................................................................5-10
Copy Back and Duplicates ..............................................................................5-10
Error Handling.................................................................................................5-11
Standard Procedures ......................................................................................................5-11
Structure-Based Interface ................................................................................5-11
Unrolled Interface............................................................................................5-12
Phases and Error Handling ..............................................................................5-12
Referenced Percent Variables..........................................................................5-12
Procedure Arguments ......................................................................................5-15
U, Y, S, and I.....................................................................................5-15
Extended Procedure Information Structure .....................................................5-18
Caller Identification ..........................................................................5-18
Compatibility Issues..........................................................................5-19
Macro Procedure............................................................................................................5-20
Interface ...........................................................................................................5-20
Asynchronous Procedures..............................................................................................5-21
Interrupt ...........................................................................................................5-21
Background......................................................................................................5-21
Startup..............................................................................................................5-21
Changing %var Values During Startup.............................................5-22
Condition Block .............................................................................................................5-22
Default Mode...................................................................................................5-22
No-Default Mode.............................................................................................5-22
Sequential Mode ..............................................................................................5-22
BlockScript Block..........................................................................................................5-22
Inputs and Outputs...........................................................................................5-23
Environment Variables ....................................................................................5-24
Local Variables................................................................................................5-24
Init, Output, and State Phases..........................................................................5-25
Default Phase ....................................................................................5-26