Rockwell Automation 1771-DB Basic Module User Manual - Series A - Manual (Page 57)

Operating Functions
Chapter 5
5–20
Examples:
SIMPLE DO-UNTIL
u10 A=0
u20 DO
u30 A=A+1
u40 PRINT A
u50 UNTIL A=4
u60 PRINT “DONE”
u70 END
uRUN
1
2
3
4
DONE
READY
u
NESTED DO-UNTIL
u10 DO
u20 A=A+1
u30 DO
u40 B=B+1
u50 PRINT A,B,A,*B
u60 UNTIL B=3
u70 B=0
u80 UNTIL A=3
u90 END
uRUN
1 1 1
1 2 2
1 3 3
2 1 2
2 2 4
2 3 6
3 1 3
3 2 6
3 3 9
READY
u
5.4.8
Statements: DO – UNTIL
[rel expr] (continued)