YME Engineering Course

I. REGULATORY CONTROL FUNCTION BLOCKS
it is. Also, when set to the “Velocity Output Action” type, the value read
back from the connection destination is added to the output value and set
in the connection destination.
♦ MV Display Style
Use the Function Block Detail Builder to set the display form for the
manipulated output value (MV).
• MV Display Style:
Select “Automatic Determination” or “User Define.”
The default is “Automatic Determination.”
When “Automatic Determination” is selected, the engineering unit and
scale range of the manipulated output value (MV) change according to the
connected destination of the OUT terminal. When “User Define” is
selected, set the engineering unit and scale range for the manipulated
output value (MV).
♦ Limit Output in Direction when Clamped
When the data status of the cascade connection destination is CLP+ or
CLP-, the output direction of the manipulated output value (MV) is
restricted, i.e., the value cannot be changed to exceed or falls below the
present output value, so that only the manipulated output value (MV) in
the direction that cancels CLP+ or CLP- is output. Limit output in direction
when clamped is selectable from “Yes” and “No.” Default is “Yes.”
♦ Control Calculation Output Type
A Regulatory Control Block outputs its manipulated output value (MV) or
the vicissitude of that value (∆MV). There are two types output action:
positional and velocity:
• In positional output action, the output value connects to its
destinations unchanged.
• In velocity output action, the amount of change for the
current output (∆MV) is added to the value read back from
the connection destination of the output terminal.
The output operation can be selectable from “positional” or “velocity.”
Default is the “positional” action.
I.3.7 CONNECTION
The wiring configuration done using the control drawing builder appears on this
sheet.
I.3.8 OTHERS – CONSTANT
Constants are preset tuning parameters; they can be set in the Constant text box
on others tab. Up to 1,024 alphanumeric characters can be used for each
YME Training Center I-19
CS3KR3-ENG 1 ST Edition Jan 2002