Process Control Instructions

The Process Control instructions include these instructions:
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Provide alarming for any analog signal.
ALM
Control discrete devices, such as solenoid valves, pumps, and motors, that have only two possible states (e.g., on/off, open/closed, etc.).
D2SD
Control discrete devices, such as high/low/off feeders that have three possible states (e.g., fast/slow/off, forward/stop/reverse, etc.).
D3SD
Perform a delay of a single input. You select the amount of deadtime delay.
DEDT
Convert an input based on a piece-wise linear function.
FGEN
Provide a phase lead-lag compensation for an input signal.
LDLG
Regulate an analog output to maintain a process variable at a certain setpoint, using a PID algorithm.
PIDE
Raise/lower or open/close a device, such as a motor-operated valve, by pulsing open or close contacts.
POSP
Provide for alternating ramp and soak periods to follow a temperature profile.
RMPS
Convert an unscaled input value to a floating point value in engineering units.
SCL
Take the 0-100% output of a PID loop and drive heating and cooling digital output contacts with a periodic pulse.
SRTP
Provide a time-scaled accumulation of an analog input value, such as a volumetric flow.
TOT
Control a single process variable by maintaining a single controller output.
IMC
Control a single process variable by manipulating as many as three different control variables.
CC
Control two process variables to their setpoints using up to three control variables.
MMC
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