Allen-Bradley MicroLogix 1400 Instruction Manual page 337

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Setpoint MIN (MINS)
Input Parameter
Descriptions
MINS - Setpoint
Minimum
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.
TIP
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)
Input Parameter
Descriptions
OSP - Old
Setpoint Value
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.
Address Data Range
Format
PD10:0.MINS word -32,768...+32,767
(INT)
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.
Address Data Range
Format
PD10:0.OSP word -32,768...+32,767
(INT)
Process Control Instruction
Type User
Program
Access
control read/write
Type User
Program
Access
status read only
Publication 1766-RM001A-EN-P - October 2008
335