Rockwell-automation 1771-DB Basic Module User Manual - Series A Manual de usuario descargar pdf (Pagina 39)

Operating Functions

Chapter 5

5–2

You may put more than one statement on a line, if separated by a

colon (:). You can use only one statement number per line.

You can enter lower case characters in the COMMAND mode. Any

keywords, commands, variable and array names entered in lower case

change to upper case when stored in memory.

You can use format statements within the print statement. The format

statements include TAB( (|expr|), SPC([expr]), USING(special

symbols), and CR (carriage return with no line feed).

You can represent the following range of numbers in the BASIC module:

+1E–127 to +.99999999E+127

There are eight significant digits. Numbers are internally rounded

to fit this precision. You can enter and display numbers in four

formats: integer, decimal, hexadecimal and exponential.

Example: 129, 34.98, 0A6EH, 1.23456E+3

In the BASIC module, integers are numbers that range from 0 to 65

535 or OFFFFH. You can enter all integers in either decimal or

hexadecimal format. You indicate a hexadecimal number by placing the

character “H” after the number (e.g. 170H). If the hexadecimal number

begins with A – F, then it must be preceded by a zero (i.e. You must enter

A567H as OA567H). When an operator, such as .AND. requires an

integer, the BASIC module truncates the fraction portion of the number

so it fits the integer format. We refer to integers and line numbers as:

[integer] – [ln-num]

5.2.2

Statements (continued)

5.2.3

Format Statements

5.2.4

Data Format

5.2.5

Integers

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Rockwell-automation 1771-DB Basic Module User Manual - Series A Manual de usuario Pagina 39