Publication 1766-RM001A-EN-P - October 2008
Process Control Instruction
335
Setpoint MIN (MINS)
If the SPV is read in engineering units, then the MINS (Setpoint Minimum)
parameter corresponds to the value of the setpoint in engineering units
when the control input is at its minimum value.
Scaled errors greater than +32767 or less than -32768 cannot be
represented. If the scaled error is greater than +32767, it is represented as
+32767. If the scaled error is less than -32768, it is represented as -32768.
Old Setpoint Value (OSP)
The OSP (Old Setpoint Value) is substituted for the current setpoint, if the
current setpoint goes out of range of the setpoint scaling (limiting)
parameters.
Input Parameter
Descriptions
Address
Data
Format
Range
Type
User
Program
Access
MINS - Setpoint
Minimum
PD10:0.MINS
word
(INT)
-32,768…+32,767
control
read/write
TIP
MinS - MaxS
scaling allows you to work in engineering units. The
deadband, error, and SPV are also displayed in engineering units. The
process variable, PV, must be within the range of 0…16383. Use of
MinS -
MaxS
does not minimize PID PV resolution.
Input Parameter
Descriptions
Address
Data
Format
Range
Type
User
Program
Access
OSP - Old
Setpoint Value
PD10:0.OSP
word
(INT)
-32,768…+32,767
status
read only
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