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Section 6-1
Basic PID (Block Model 011)
Decimal Point Position of I (Integral Time) and D (Differential Time):
The decimal point position of I and D changes according to the decimal point
position in the CSV tag file. The decimal point position is changed by changing the scale setting number. When the value of the decimal point position for
the CSV tag file is 0, the scale setting number is set to not be changed, and
when the value is 1, the scale setting is set to a factor of 0.1.
4: Realtime Trend Graph
The tag ITEMs PV (ITEM 007), SP (ITEM 029), and MV (ITEM 089) are displayed in graph format. Each tag ITEM is depicted by a line in the graph
according to the following table.
Tag ITEM
PV
SP
MV
Color
Minimum Maximum Line style Marker
value
value
−1500
11500
Solid line None
−1500
11500
Solid line None
Green
Yellow
Blue
−1500
(color
code 229)
11500
Solid line
None
Step
display
Not used.
Not used.
Not used.
5: Realtime Trend Graph Legend
The line color of each tag ITEM is indicated using a Text object and a Rectangle (PV: Green; SP: Yellow; MV: Light blue).
6: Switch to Control Screen Button
Touch this button to switch to the Control Screen that includes the tag name of
the Tuning Screen. This button is created as a Command Button.
7: Realtime Trend Graph Scale
Fixed marks on the vertical axis of the realtime trend graph indicate the gradations equivalent to 0%, 25%, 50%, 75%, and 100%. The value for each mark
is displayed in engineering units using a Text object.
8: Unit
The unit character string for the engineering unit is displayed as a Text object.
9: Face Plate Control
The contents is the same as that provided in the explanations in 6.1Basic
PID (Block Model 011) except that there is no Tuning Screen Button.
The following screen is a Tuning Screen for Basic PID built using the Face
Plate Auto-Builder for NS in a 640×480 screen resolution.
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