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