Regulatory Control

Block

Description

SCP Software Limitations or Notes

BIAS

Bias block produces an output that is the sum of the two input values, MEAS and BIAS, each of which can be scaled independently.

DGAP

Differential Gap block provides optional bi-state or tri-state on/off control of two Boolean outputs.

DPIDA

Distributed Proportional-Integral-Derivative Adaptive block - Runs in FBM and is the interface between the FBM and the CP.

The block loads, but it does not process a PID algorithm that reside in FBM

FFTUNE

Feedforward Tuning block connects to the PIDA block as an extension block for feedforward control loops.

FBTUNE

Feedback Tuning block connects to the PIDA block as an extension block for performing enhanced EXACT MV tuning for feedback control loops.

LIM

Limiter block provides a position and velocity limiter.

OUTSEL

Output Select block allows the selection of one of two inputs from upstream blocks to be used as output to the process.

PID

Proportional, Integral, Derivative block provides functions of a traditional, interacting, 3-term controller.

PIDA

Advanced Proportional, Integral, Derivative block provides functions of an EXACT MV multivariable controller and is used in conjunction with the feedforward and feedback tuning blocks.

PIDE

PID with EXACT Tuning block provides PID with the EXACT self-tuning algorithm.

PIDFF

The DCI PID Interface block supports Foundation Fieldbus™ H1 (FF) device CIF and acts as the interface to a FF PID Function Block residing in an FF field device. It supports the standard PID Function block.

The block loads but does not process any algorithm that reside in FBM

PIDX

PID Extended block adds to the PID block: a sampled-data control option to use with sampling type instruments; TRACK capability that forces the output to track an independent track input; an optional non-linear gain element for pH control; a batch option that provides preloadable integral bias for batch control.

PIDXE

PID Extended with EXACT Tuning block combines the functionality of PIDX and PIDE.

PTC

Proportional Time Controller block performs the functions of a proportional-time on/off controller.

RATIO

Ratio block computes an output that is the scaled multiplication of a measurement input with a ratio set-point input.