Gain – This field indicates the gain used in the PID algorithm. Click this field to enter a new value.
Reset – This field indicates the integral time constant used in the PID algorithm. Click this field to enter a new value.
Rate – This field indicates the derivative time constant used in the PID algorithm. Click this field to enter a new value.
PV Filter TC – This field indicates the PV filter time constant in seconds. Click this field to enter a new value.
SP Filter TC – This field indicates the SP filter time constant in seconds. Click this field to enter a new value.
SP Rate DN – This field indicates the maximum negative change to the WORKING_SP in engineering units that are allowed per second. Click this field to enter a new value. A value of 0.0 indicates that no rate limiting will be done.
SP Rate UP – This field indicates the maximum positive change to the WORKING_SP in engineering units that are allowed per second. Click this field to enter a new value. A value of 0.0 indicates that no rate limiting will be done.
Structure – This field displays a description of the selected control algorithm's structure (that is, whether proportional and derivative action is on error or PV).
I Deadband – The integral deadband. When the error (WORKING_SP minus PV) is less than this value, integral action stops.