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3.
AD57G MONITORING FUNCTIONS
MELSEC-A
(3) Sequence program set 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) Graph erasing device
A sequence program is necessary to turn ON and OFF the bit device
i n which graph erasing timing is to be determined when specifying
the leading edge and falling edge of a bit device.
(c) Monitor device
A value stored i n a monitor device is handled as 16- or 32-bit 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.
When the type of scattered graph is a batch display type, store the
X and Y axes data of the set number of points in a monitor device
before displaying the graph.
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