Publication 1762-RM001C-EN-P
Process Control Instruction 19-15
PV Out Of Range (PV)
The process variable out of range bit is set (1) when the unscaled process
variable
•
exceeds 16,383, or
•
is less than zero.
Done (DN)
The PID done bit is set (1) for one scan when the PID algorithm is
computed. It resets (0) whenever the instruction is scanned and the PID
algorithm was not computed (applies to timed mode only).
Enable (EN)
The PID enabled bit is set (1) whenever the PID instruction is enabled. It
follows the rung state.
Integral Sum (IS)
This is the result of the integration .
Altered Derivative Term (AD)
This long word is used internally to track the change in the process
variable within the loop update time.
Tuning Parameter
Descriptions
Address Data Format Range Type User Program
Access
PV - PV Out of Range PD10:0/PV binary (bit) 0 or 1 status read/write
Tuning Parameter
Descriptions
Address Data Format Range Type User Program
Access
DN - Done PD10:0/DN binary (bit) 0 or 1 status read only
Tuning Parameter
Descriptions
Address Data Format Range Type User Program
Access
EN - Enable PD10:0/EN binary (bit) 0 or 1 status read only
Tuning Parameter
Descriptions
Address Data Format Range Type User Program
Access
IS - Integral Sum PD10:0.IS long word
(32-bit INT)
-2,147,483,648 to
2,147,483,647
status read/write
Tuning Parameter
Descriptions
Address Data Format Range Type User Program
Access
AD - Altered
Derivative Term
PD10:0.AD long word
(32-bit INT)
-2,147,483,648 to
2,147,483,647
status read only
K
c
T
I
-------
Etd()
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