NI MATRIXx Reference Manual

Contents

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