Rockwell-automation 1747-PBASE BASIC Development Software Programming Manual de usuario descargar pdf (Pagina 75)

Publication 1746-PM001A-US-P

Writing Programs Using the BASIC Development Language 6-3

Syntax:{ }

Syntax: REM

Example:

Before translation: After translation:

{This is a comment} 0 REM ...

REM THIS IS A REMARK 10 REM THIS IS A REMARK

Examples of illegal comments:

{$ comment}

For example, upon translating the FIRST program of chapter 2 you would get

something like:

0 REM BTRAN V X.XX C:\ABBASIC\BAS\FIRST.BDL, 06-12-91 06:35pm

Include

The Include directive tells the translator to load another source code file into the

current program. This method of file inclusion allows you to frequently used

routines in many different programs without re-entering any code or having to edit

line numbers. The included file can contain any combination of program

statements and translator directives.

Syntax:

{$I [filename.ext]}

Example:

Before translation: After translation:

REM INCLUDE EXAMPLE 0 REM ...

{$I FIRST.BDL} 10 REM INCLUDE EXAMPLE

20 FOR X=1 TO 100

30 A=X*2

40 P. A

50 NEXT X

60 END

IMPORTANT

If a dollar sign immediately follows the left curly bracket, it is not

interpreted as a comment. Comments are also not allowed inside

of comments.

IMPORTANT

Remarks (line zero) will be created by the 1747–PBASE

Translator for each .BDL program that is translated (indicated in

this manual by: 0

REM ...). This remark contains the translator’s

filename (BTRAN), followed by its revision number, path and

name of the program being translated, and date and time.

1 2 ... 70 71 72 73 74 75 76 77 78 79 80 ... 143 144

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Rockwell-automation 1747-PBASE BASIC Development Software Programming Manual de usuario Pagina 75