Allen-Bradley MicroLogix 1200 Reference Manual page 256

19-14 Process Control Instruction
Publication 1762-RM001C-EN-P
Derivative Action Bit (DA)
Tuning Parameter Address
Descriptions
DA - Derivative Action Bit PD10:0/DA
When set (1), the derivative (rate) action (DA) bit causes the derivative
(rate) calculation to be evaluated on the error instead of the process
variable (PV). When clear (0), this bit allows the derivative (rate)
calculation to be evaluated where the derivative is performed on the PV.
CV Upper Limit Alarm (UL)
Tuning Parameter Address
Descriptions
UL - CV Upper Limit Alarm PD10:0/UL
The control variable upper limit alarm bit is set when the calculated CV
output exceeds the upper CV limit.
CV Lower Limit Alarm (LL)
Tuning Parameter Address
Descriptions
LL - CV Lower Limit Alarm PD10:0/LL
The control variable lower limit alarm bit is set (1) when the calculated
CV output is less than the lower CV limit.
Setpoint Out Of Range (SP)
Tuning Parameter
Descriptions
SP - Setpoint Out of Range
This bit is set (1) when the setpoint:
• exceeds the maximum scaled value, or
• is less than the minimum scaled value.
Data Format Range
binary (bit) 0 or 1
Data Format Range
binary (bit) 0 or 1
Data Format Range Type
binary (bit) 0 or 1
Address Data Format Range Type
PD10:0/SP binary (bit)
Type User Program
Access
control read/write
Type User Program
Access
status read/write
User Program
Access
status read/write
User Program
Access
0 or 1 status read/write