ProSoft Technology MVI56-BAS - Manual (Page 179)

MVI56-BAS ♦ ControlLogix Platform BASIC CALLs Syntax
BASIC Module (DB/BAS Compatible) User Manual
ProSoft Technology, Inc. Page 179 of 234
December 13, 2011
CALL 20: Enable Processor Interrupt
Use CALL 20 to allow the ControlLogix to interrupt the current BASIC program.
When word 0 bit 15 in the output image (Local:x:O:Data[0].15) toggles from OFF
to ON, the program jumps to the line number specified by the CALL 20
parameter.
Use the RETI command in order to return to the point the program was before
being interrupted.
Syntax:
PUSH [A]
CALL 20
Where:
A = BASIC line number
Example:
10 PUSH 50: REM JUMPS TO LINE NUMBER 50
20 CALL 20
30 GOTO 30
35 PRINT "LINE 35"
40 PRINT "LINE 40"
50 PRINT "LINE 50"
60 PRINT "LINE 60"
70 RETI
80 END