Campbell-scientific CR9000X Measurement and Control System Bedienungsanleitung PDF herunterladen (Seite 332)

Section 9. Program Control Instructions

value of the variable that was passed in. If a constant is

passed to one of the subroutine declared “variables”, that

“variable” becomes a constant and its value cannot be

changed by the subroutine.

You are never required to use the Call keyword when calling a subroutine. If

you use the Call keyword to call a procedure that requires arguments, the

arguments list must be enclosed in parentheses.

You can pass arguments to a procedure by reference (variable) or by value

(constant or numeric value). Values of arguments passed by reference can be

altered by the procedure when the arguments are returned.

See the Sub topic in Section 5 Program Declarations for Example and

additional information on Subroutines.

CallTable

Used to call a data table.

Syntax

CallTable Name

Remarks

Calls a DataTable that has been declared prior to the BeginProg statement.

When the DataTable is called, it will process data as programmed and check

the output condition.

CallTable Example

This example uses CallTable to Call the ACCEL data table.

Default Program

A program called Default.C9X can be stored on the CR9000X CPU drive. At

power up, the CR9000X looks for and, when it exists, loads Default.C9X if no

other program takes priority

See "Program File run hierarchy" in the "Powerup.ini" topic in Section 9.2,

Datalogger Status/Control.

'This example uses the FileMark command.

Public TBlk1(1) : Units TBlk1 = Deg_F

Dim TRef(1) 'Declare Reference Temp variable

Public Flag(8), Count

DataTable(TEMP,True,-1) 'Trigger, auto size

CardOut (0 ,1000) 'Write data to PC Card

DataInterval(0,0,0,50) 'Synchronous, 50 lapses, autosize

Average (1,TBlk1(),FP2,False) '1 Reps,Source,Res

EndTable 'End of table TEMP

BeginProg 'Program begins here

Scan 0,0) 'Scan once every 10mSecs, non-burst (500,1,

ModuleTemp(TRef(),1,5,20) 'RefTemp,CardCount,StartCard,Integrate

TCDiff(TBlk1(),1,mV50,5,1,TYPET,TRef(1),True,30,40,1.8,32)

CALLTABLE TEMP 'Go up and run Table TEMP

Next Scan 'Loop up for the next scan

EndProg 'Program ends here

9-2

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