National Instruments 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