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5. MONITOR FUNCTIONS AND THEIR USE
MELSEC-A
5.3.1
Function that indicates the numerical value of a word device in units of one point (numerical
format display)
[Function]
This function is used to display in a fixed position a numerical value stored in
the buffer of the word device special-function module.
By using this monitoring function, 16-bit or 32-bit numerical value data can
be displayed in decimal, hexadecimal, or BIN (binary) in the following formats:
(a) Magnification/offset can be calculated.
(b) Display format is determined by setting a displayed number column
and a decimal point position .
Since the PC CPU is used for monitoring and displaying, monitoring
can be done without calculating numerical value data.
Example:
When the planned numbers, actual numbers, and the
achievement rate stored to DO to D2 are displayed
Achievement rate values are displayed to the second
digit after the decimal point.
•
«Monitor device value) x (Multiplier» + (Offset value)
J-
or
«Monitor device value)
+
(Divisor»
+ (Offset value)
(Values after the decimal point are rounded off.)
Value to be
displayed
Model
Planned
Actual
Achievement
Number
Number
Rate
A-l
%
•
[Monitor screen creation]
DO
is
monitored.
01 is
monitored .
D2 is
monitored.
The following explains the setting that must be done to enable the function
by which a numerical value stored in the word device and the buffer of a
special-function module is monitored.
(1)
Graphic data created by using the GEDE
A display frame and a unit must be created using a canvas screen.
5-23
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