Publication 1763-RM001C-EN-P - October 2009
Process Control Instruction
297
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 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
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