PlantPAx instructions
The PlantPAx built-in instructions monitor and process discrete and analog inputs and outputs for controlling devices.
Available Instructions
Ladder Diagram, Function Block, Structured Text
To: | Use this instruction: |
|---|---|
Provide HART digital data for an intelligent analog device alongside the analog input (PAI) or analog output (PAO) instruction for that device. | Process Analog HART (PAH) |
Monitor one analog value, such as from a channel of analog input module. | Process Analog Input (PAI) |
Monitor one analog Process Variable (PV) by using two analog input signals. | Process Dual Sensor Analog Input (PAID) |
Monitors one analog process variable (PV) by using up to eight analog input signals. | Process Multi Sensor Analog Input (PAIM) |
Manipulate an analog output to control a field device. | Process Analog Output (PAO) |
Executes up to eight gates of configurable Boolean logic. | Process Boolean Logic (PBL) |
Select the Command Source for a device. | Process Command Source (PCMDSRC) |
Control and monitor feedback from a discrete 2-state, 3-state, or 4-state device in a variety of modes. | Process Discrete 2-, 3-, or 4-State Device (PD4SD) |
Generate outputs to provide data and alarms on deadbands and thresholds. | Process Deadband Controller (PDBC) |
Monitor one discrete condition, such as from a channel of a discrete input module. | Process Discrete Input (PDI) |
Manipulate a discrete output to control a field device. | Process Discrete Output (PDO) |
Control an ingredient addition that uses a flow meter to measure the quantity of ingredient added. | Process Dosing (PDOSE) |
Send one primary analog output signal to multiple secondary users or devices. | Process Analog Fanout (PFO) |
Select the highest or the lowest of up to six incoming controlled variables (CVs) and send the selected CV as output. | Process High or Low Selector (PHLS) |
Collect, or sum up, the interlock conditions that stop or de-energize a running or energized piece of equipment. | Process Interlocks (PINTLK) |
Control a parallel group of motors, such as a set of pumps with a common intake source and discharge destination. | Process Lead Lag Standby Motor Group (PLLS) |
Monitor and control a fixed single-speed, two-speed, or reversing motor. | Process Motor (PMTR) |
Control and monitor feedback from a circular or linear discrete device with up to 30 positions. | Process n-Position Device (PNPOS) |
Collect, or sum up, the permissive conditions that allow a piece of equipment to energize. | Process Permissives (PPERM) |
Manipulate the Control Variable (CV) in regulatory control loops in response to Process Variable (PV) readings and Setpoint (SP, the target PV) settings. | Process Proportional + Integral + Derivative (PPID) |
Calculate a flow at standard temperature and pressure. | Process Pressure/Temperature Compensated Flow (PPTC) |
Prevent large motors from starting repeatedly. | Process Restart Inhibit (PRI) |
Record the total run time and number of instances the motor or other equipment starts. | Process Run Time and Start Counter (PRT) |
Calculate the volume of product in an upright cylindrical tank, given the level of the product and the tank calibration table. | Process Tank Strapping Table (PTST) |
Operate a two-position, single-solenoid operated valve, a dual-solenoid operated valve, or a motor-operated valve in various modes; monitor hand-operated two-position valves. | Process Valve (PVLV) |
Control and monitor feedback from a mix-proof valve in various modes and states. | Process Mix Proof Valve (PVLVMP) |
Monitor a two-state (open and close) valve and record statistics for stroke times and stroke counts. | Process Valve Statistics (PVLVS) |
Monitor and control a variable-speed motor using an AC (variable frequency) or DC drive. | Process Variable Speed Drive (PVSD) |
Provide Feedback