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Download AD51H-BASIC Programming Manual (Command)
Transcript
11 INSTRUCTIONS AND FUNCTIONS ON GOTO Instruction MELSEC-Q ON to GOTO • Branches to one of the lines specified with the line numbers according to the value. Syntax ON <expression> GOTO <line number>[,<line number>…] expression • • • • Branches to the specified line number depending on the value of the expression. line number • • • • Specify the line number to which the execution is branched. Examples ON A GOTO 200, 300, 400 Description • The ON to GOTO instruction branches the program execution to one of several specified line numbers depending on the value of the specified expression. • Digits after the decimal points are truncated if the value of <expression> is not an integer. • The execution moves to the next instruction if the value of <expression> is 0 or greater than the number of specified line numbers, which should be 255 or less. • An “Illegal function call” error occurs if the value of <expression> is negative or greater than 255. • A label name can be used instead of an actual line number for <line number>. 11 - 149 •••• Branches to line 200 if the value of A is 1, to line 300 if A is 2, and to line 400 if A is 3. 11 - 149
