Input Parameters; Setpoint (Sp) - Allen-Bradley SLC 500 Series Reference Manual
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Input Parameters
Table 9.25 Input Parameters
Input Parameter Descriptions
SP - Setpoint
SPV - Process Variable Scaled
(1)
SMAX - Maximum Setpoint
SMIN - Minimum Setpoint
(1)
The SMAX must be greater than SMIN or the processor will fault with error code.
(2)
The range listed in the table is for when scaling is not enabled. With scaling, the range is from minimum scaled (SMIN) to maximum scaled (SMAX).
(3)
Maximum SP scaling range: SLC 5/02 is -16382 to +16383; SLC 5/03 and higher is -32767 to +32767.
(4)
Minimum SP scaling range: SLC 5/02 is -16383 to +16382; SLC 5/03 and higher is -32768 to +32766.
The table below shows the input parameter addresses, data formats, and types
of user program access. See the indicated pages for descriptions of each
parameter.
Address
Range
Word 2
0 to 16383
Word 14
0 to 16383
Word 7
0 to 16383
Word 8
0 to 16383
Setpoint (SP)
Table 9.26 Setpoint Parameter
Input
Address
Parameter
Descriptions
SP - Setpoint
Word 2
(1)
The range listed in the table is for when scaling is not enabled. With scaling, the range is from minimum scaled
(SMIN) to maximum scaled (SMAX).
The SP (Setpoint) is the desired control point of the process variable.
Proportional Integral Derivative Instruction
Type
User Program
Access
(2)
control
read/write
status
read only
(3)
control
read/write
(4)
control
read/write
Data
Range
Format
word (INT)
0 to
16383
Publication 1747-RM001G-EN-P - November 2008
For More
Information
9-15
9-16
9-16
9-17
Type
User Program
Access
control
read/write
(1)
9-15
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