Instruction manual

APPENDIX A. FREQUENTLY ASKED QUESTIONS
PC208W, Version 3.0, Instruction Manual A-3
done unintentionally. If writing twice
intentionally, ignore the warning.
What is an “Improper use of P80” warning?
Normally P80 follows the instruction that sets
the Output Flag and is used to set the Array ID
or specify were data are stored. If P80 does not
immediately follow the instruction setting the
Output Flag, EDLOG generates this warning.
Using P80 in this manner has three
consequences:
• The Final Storage file that EDLOG
generates may not correctly identify
how the array is divided.
• EDLOG’s estimates of the amount of
storage used may be off.
• Some dataloggers (21X and CR7) do
not support dividing arrays with different
destinations.
Why can’t I use CSI_R, CSI_1, ... as Input
Location labels?
The expression compiler uses these locations
to store temporary values. These labels are
reserved. Do not use these labels in your
program.
Where did my expression labels go?
When you run Optimize in the Input Location
Editor, EDLOG removes any Input Location
labels that are not referenced in the program or
that do not have the Manual Flag set. EDLOG
does not evaluate expressions as part of the
optimization so locations that are only
referenced by an expression will be removed.
This is no cause for concern as the labels are
reallocated with the next compile. The
temporary labels CSI_R, CSI_1, etc. are good
examples of this.
When should I optimize?
Optimization removes all labels that are not
referenced in the program or do not have the
manual flag set. It will move locations to
remove any unused locations. It will also check
and reapply the Read - Write flags. It will
update all direct references (where the
instructions specify an Input Location) in the
program. Indirect references are not updated.
You do not need to optimize, but it can be
helpful if the Input Locations get cluttered after
numerous program changes. If in doubt, save
your work before optimizing.
What’s with these “INI” files!
PC208W uses INI files, or information files, to
keep track of various program configurations.
There are INI files for each datalogger in your
device map, INI files for your modem setup, and
INI files for the PC208W program itself.
Additionally, EDLOG uses an EDLOG.INI file to
remember the datalogger type you used last. It
also keeps track of the program that was open
when you exited from EDLOG. It will reload
these automatically when EDLOG is restarted.
I know the number of the instruction I want
to add. How can I avoid the <Shift><Insert>
or EDIT menu steps to add it?
Type the number starting in column one on a
blank line in EDLOG.
How can I find an instruction when I don’t
remember the number?
Pressing <Shift><Ins> will display a pick list of
instructions. There are two ways to find and
insert an instruction:
• Use the up and down arrow keys to move
through the Instruction list. When the
instruction you wish to use is highlighted,
press <Enter>.
• Use the <Tab> key to highlight the
Instruction Name field. Type in the first few
letters of the instruction name; that
instruction name will be found and
highlighted in the Instruction list. Press
<Tab>, and press <Enter>.
Once an instruction has been inserted into the
program, you can press <F1> for help on the
instruction and its parameters.
Why did the dld file not change when I
changed my program?
You did not recompile. Changes to the .CSI file
are reflected in the .DLD file following a compile
operation.