Installation manual

Publication 1747-RM001G-EN-P - November 2008
9-12 Proportional Integral Derivative Instruction
Derivative Rate Action Bit (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.
Output Alarm Upper Limit (UL)
The control variable upper limit alarm bit is set (1) when the calculated CV
output exceeds the upper CV limit.
Output Alarm Lower Limit (LL)
The control variable lower limit alarm bit is set (1) when the calculated CV
output is less than the lower CV limit.
Table 9.16 Derivative Rate Action Bit Parameter
Tuning Parameter
Descriptions
Address Data Format Range Type User
Program
Access
DA - Derivative Action Bit Word 0, Bit
7
binary (bit) 0 or 1 control read/write
Table 9.17 Output Alarm Upper Limit Parameter
Tuning Parameter
Descriptions
Address Data Format Range Type User Program
Access
UL - Output Alarm Upper
Limit
Word 0, Bit
9
binary (bit) 0 or 1 status read/write
Table 9.18 Output alarm Lower Limit Parameter
Tuning Parameter
Descriptions
Address Data Format Range Type User Program
Access
LL - Output Alarm Lower
Limit
Word 0, Bit
10
binary (bit) 0 or 1 status read/write