Publication 1747-RM001G-EN-P - November 2008
Proportional Integral Derivative Instruction 9-17
Setpoint Minimum Scaled (SMIN)
If the SPV is read in engineering units, then the SMIN (Setpoint Minimum)
parameter corresponds to the value of the setpoint in engineering units when
the control input is at its minimum value.
Table 9.29 Setpoint Minimum Scaled Parameter
Input
Parameter
Descriptions
Address Data
Format
Range Type User
Program
Access
SMIN -
Minimum
Scaled
Word 8 word
(INT)
-32,768 to
+32,766
(1)
(1)
SLC 5/02 valid range is -16383 to +16382.
control read/write
TIP
SMIN - SMAX 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 to 16383. Use of SMIN - SMAX does not
minimize PID PV resolution.
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