Section 2. Program: EDLOG
PC208W, Version 3.3, Instruction Manual
2-7
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Press <F1>. This opens the help system to the detailed description of the
instruction and parameters.
Repeat the process until all of the parameters have been entered.
The instructions and their parameters are datalogger specific; to
find a detailed description of an instruction, refer to the specific
datalogger manual.
2.4.2 Data Entry Warning
When the Data Entry Warning is active, a warning is displayed immediately
after an invalid input has been entered for an instruction's parameter. The
warning lists the valid inputs. A valid input must be entered before advancing
to the next parameter.
By default, the Data Entry Warning is enabled. To disable the Data Entry
Warning, select OPTION | EDITOR. Use the <tab> key to place the cursor on
the brackets and press the <space> bar or select the brackets with the computer's
mouse. A space instead of an 'X' between the brackets indicates this option is
disabled.
2.5 Expressions
Expressions are a shortcut for processing numbers and input data. They can be
entered into any of the program tables. When a datalogger program that
contains an expression is compiled, the appropriate instructions are
automatically incorporated into the .DLD file.
2.5.1 Rules for Creating Expressions
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Expressions must be set equal to the label of the Input Location that will
store the result. The label must be to the left of the expression. See
Section 2.7 for more information about Input Location labels.
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Expressions can have both fixed numbers and Input Location labels. Input
Locations can ONLY be referenced by their label; each number is always
assumed to be a constant.
•
Floating point numbers are limited to five (or six for the CR10X) digits
plus the decimal point and sign.
•
The operator(s) and/or function(s) used in the expression must be on the
operator or function list (Table 2.5-1).
•
Numbers and labels that are immediately after a function must be enclosed
in parentheses.
•
Several operators and/or functions can be used in one expression.
Operations and functions that are enclosed in parentheses are calculated
first; the inner most parentheses are evaluated first.
•
To continue an expression to the next line, end the first line with an
underscore (_).
NOTE
Summary of Contents for PC208W
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