Installation manual

Publication 1747-RM001G-EN-P - November 2008
Proportional Integral Derivative Instruction 9-15
Input Parameters
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.
Setpoint (SP)
The SP (Setpoint) is the desired control point of the process variable.
Table 9.25 Input Parameters
Input Parameter Descriptions Address Range Type User Program
Access
For More
Information
SP - Setpoint Word 2
0 to 16383
(2)
control read/write 9-15
SPV - Process Variable Scaled Word 14 0 to 16383 status read only 9-16
SMAX - Maximum Setpoint
(1)
Word 7
0 to 16383
(3)
control read/write 9-16
SMIN - Minimum Setpoint Word 8
0 to 16383
(4)
control read/write 9-17
(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.
Table 9.26 Setpoint Parameter
Input
Parameter
Descriptions
Address Data
Format
Range Type User Program
Access
SP - Setpoint Word 2 word (INT) 0 to
16383
(1)
(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).
control read/write