Device Control

Block

Description

SCP Software Limitations or Notes

DSI

Display Station Interface provides the interface between each Panel Display Station and the compounds and blocks that actualize the control strategy.

GDEV

General Device block provides Open/Close control of motor, or air, operated valves, and Run/Stop control of 2-wire or 3-wire motor circuits.

MDACT

Motor Driven Actuator Controller block provides a capability for controlling processes through tri-state devices.

MOVLV

Motor-Operated Valve block operates two related output contacts, which open/close a motor-operated valve on an incremental basis.

MTR

Motor Controller block performs both 2-wire and 3-wire motor control functions.

PLB

Programmable Logic Block supports ladder logic executing in a digital FBM. A PLB connects user tasks, other blocks, and other ladder diagrams with a digital FBM’s physical inputs and outputs and a ladder diagram’s I/O flags.

PLSOUT

Pulse Output block sends on/off or start/stop type commands through two momentary pulsed outputs from a Foxboro Evo control station to an external device via a DCI. Typically, these commands are sent to a latching function in a device, with one command used for the set input of the latch and the other used for the reset input.

UNIVFF

Universal Interface Block supports Foundation Fieldbus™ H1 (FF) CIF and acts as an interface to an FF Resource Block, Transducer Block or Function Block.

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

VLV

Valve on/off controller block operates two related output contacts, which open or close a solenoid valve.