Allen-Bradley MicroLogix 1400 - Page 350

Publication 1766-RM001A-EN-P - October 2008
348 Process Control Instruction
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
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…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…
2,147,483,647
status read only
K
c
T
I
------ -
Etd()
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