Allen-Bradley 1747-PBASE, Programming Manual

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Publication 1746-PM001A-US-P
2-10 Getting Familiar with Your Development Software
5.
5. 5.
5. Use the previously saved program:
FIRST.BDL
6. 6. 6. 6. Move the cursor to the top left corner of the window.
7.
7. 7.
7. Type in the following program:
{THIS IS A FIRST PROGRAM}
REM FIRST PROGRAM
FOR X=1 TO 100
A=X*2
PRINT A
NEXT X
END
Notice that there are no line numbers entered here. Also notice that when you
type in the lines within the for/next loop, they are indented. This is because the
BASIC development software recognizes that you are entering a BASIC
development language program (since your filename extension is BDL) and
the default parameters are set for smart indenting. There are a number of other
related parameters for BDL files discussed in Chapter 3.
Saving Your Program
Path: Edit mode
→ → → →
File
→ → → →
save file as
Path: Edit mode
→ → → →
File
→ → → →
save file as
→ → → →
save file in current
window
QuickStroke: [F5]
We recommend that you periodically save sizeable programs as you work on them
to avoid losing large quantities of work in the event of a system error or power
failure.
The BASIC development software has an autosave feature that offers two methods
for automatically saving files as you work on them. It also has a backup feature with
several methods for making backup files. These features are described in Chapter 3.
1. If using a mouse, move the cursor over to the File menu at the top left and click
the left mouse button. If you do not have a mouse, press [
F2
] to move the
cursor to the pull-down menus. Cursor to the right or left to highlight the File
menu and press
[Enter]
.
2. 2. 2. 2. Move the cursor to
Save file in current window
and press
[RETURN]
or
click the left mouse button.
Since you have previously named and saved the file in the current window and
selected
Save file in current window
, the software assumes you are saving
it under its existing name. A message appears in the message line indicating
that the save was completed.