Allen-Bradley LOGIX 5000 User Manual

Chapter 1
Process Control Instructions
68 Rockwell Automation Publication 1756-RM006K-EN-P - November 2018
Structured Text
PIDE(PIDE_tag);
Operands
Function Block
Operand Type Format Description
PIDE tag PID_ENHANCED structure PIDE structure
autotune tag PIDE_AUTOTUNE structure (optional)
autotune structure
Structured Text
Operand Type Format Description
PIDE tag PID_ENHANCED structure PIDE structure
See Structured Text Syntax for more information on the syntax of expressions
within structured text.
PIDE Structure
Input Parameter Data Type Description
EnableIn BOOL Enable input. If false, the instruction does not execute and outputs are not updated.
Default is true.
PV REAL Scaled process variable input. This value is typically read from an analog input module.
Valid = any float
Default = 0.0
PVFault BOOL PV bad health indicator. If PV is read from an analog input, then PVFault is normally
controlled by the analog input fault status. When PVFault is true, it indicates the input
signal has an error.
Default is false = "good health"
PVEUMax REAL
Maximum scaled value for PV. The value of PV and SP which corresponds to 100 percent
span of the Process Variable.
Valid = PVEUMin < PVEUMax maximum positive float
Default = 100.0
PVEUMin REAL Minimum scaled value for PV. The value of PV and SP which corresponds to 0 percent
span of the Process Variable.
Valid = maximum negative float PVEUMin < PVEUMax
Default = 0.0
SPProg REAL SP program value, scaled in PV units. SP is set to this value when in Program control
and not Cascade/Ratio mode. If the value of SPProg < SPLLimit or > SPHLimit, the
instruction sets the appropriate bit in Status and limits the value used for SP.
Valid = SPLLimit to SPHLimit
Default = 0.0

Allen-Bradley LOGIX 5000 Specifications

General

Brand	Allen-Bradley
Model	LOGIX 5000
Category	Controller
Language	English