<Appendix 5. PID Block>
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IM 01E21A02-03EN
Appendix 5. PID Block
The PID block performs the PID calculation based on the deviation of the measured value (PV)
from the setpoint (SP).
The PID block is generally used for constant-setpoint and tracking control.
A5.1 Functional Block Diagram
The functional block diagram of the PID block is shown below.
Setpoint
Output
Bypass
Input Filter
PID Control
Computation
Alarm
Processing
Mode Control
Feed-forward
Data Status
Management
Output Tracking
CAS_IN
BKCAL_OUT
RCAS_OUT
BKCAL_IN
ROUT_IN
ROUT_OUT
FF_VAL
RCAS_IN
TRK_IN_D
TRK_VAL
IN
OUT
PV
SP
FA0101.EPS