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5. MONITOR FUNCTIONS AND THEIR USE
MELSEC-A
(3) Sequence program created by using the PC CPU
A sequence program which satisfies the following item is necessary.
However, it is not necessary to create the following sequence program
if the sequence program data for doing monitoring control can be used
as is.
(a) Data collection trigger
A sequence program is necessary to turn ON and OFF the bit device
in which data collection timing is to be determined when specifying
the leading edge and falling edge of a bit device.
(b) Monitor device
A value stored in a monitor device is handled as 16- or 32-bi1 data.
If the weight varies from the monitor device, use a sequence program
to do weight conversion.
Control the value so that a graph in the range from the lower limit to
the upper limit can be displayed.
•
(Set the lower limit value of an accumulated type to 0 or more.)
(4)
Restrictions when creating monitoring screens
See Section 6.9 for restrictions when using a monitoring function in
which a bar graph is to be displayed.
•
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