Rockwell-automation 1771-DB BASIC MODULE Manual de usuario descargar pdf (Pagina 250)

100

101

Chapter

Call Routines 0–68

12 -60

Use this routine to append one string to the end of another string.

If the resulting string is longer than the maximum string length, the append

characters are lost. This is a string concatenation assignment.

(Ex. $(1)=$(1)+$(2)).

Input and Output Arguments

This routine has two input arguments and no output arguments. The first

input argument is the string number of the string you want appended.

The second input argument is the string number of the base string.

Syntax

PUSH

string number of string to be appended

PUSH

string number of the base string

CALL

Example

10 STRING 200,20

20 $(1)=”How are ”

30 $(2)= “you?”

40 PRINT “BEFORE:”,

50 PRINT “$1=”,$(1),” $2=”,$(2)

60 PUSH 2 :REM STRING NUMBER OF STRING TO BE APPENDED

70 PUSH 1 :REM BASE STRING NUMBER

80 CALL 61 :REM INVOKE STRING CONCATENATION ROUTINE

90 PRINT “AFTER:”,

100 PRINT “$1=”,$(1),” $2=”,$(2)

110 END

>RUN

BEFORE:

$1=How are

$2=you?

AFTER:

$l=How are you?

$2=you?

CALL 61: String Append

(Concatenation)

1 2 ... 245 246 247 248 249 250 251 252 253 254 255 ... 393 394

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