Control Icon Overview

This chapter lists icons alphabetically by function name and includes function names, the previous function name, in which folder it can be found, and short descriptions. Function name is usually the same as the icon name.


Function Name

Folder

Description

Absolute

Arithmetic

Returns the absolute value.

Addition

Arithmetic

Sum up the input values.

AND

Logic

AND output becomes true (1) if all inputs are true (1).

ArcCosine

Arithmetic

Calculates the arc cosine function of the input.

ArcSine

Arithmetic

Calculates the arc sinus function of the input.

ArcTangent

Arithmetic

Calculates the arc tangent function of the input.

Average

Arithmetic

Calculates the average of input values.

CASPlus

Controller

Cascade controller that acts as a PI controller with a master and cascade controller.

Ceil

Arithmetic

Calculate the next higher integer of the input value

Compare Gr/ Eq/ Le

Comparison

Compares input A and B.

Compare GrEq/ LeEq

Comparison

Compares two analog inputs (A and B).

Cosine

Arithmetic

Calculate the cosine function of the input in rad.

Counter

Miscellaneous

Increments the output by 1 when input "the input" changes from 0 to 1. The counter is set to 0, when "Reset" input becomes true (1).

Cycle

Miscellaneous

Outputs an alternating value.

Decimal Places

Arithmetic

Returns the decimal places value of the input (3.175 => 0.175).

Delay

Timer

Switch-on delay of input A to Y. if input "A" is unequal to "B" within delay time, then Alarm output = true (1).

Dewpoint

EnergyManagement

Calculates the dewpoint temperature from the absolute humidity.

Differential

Controller

Calculates the derivative output signal, which changes in proportion to changes of the input signal. Y = 0 if the input is unchanged since the last cycle. Y > 0 if the deviation is increasing. Y < 0 if the deviation is decreasing.

Division

Arithmetic

Divides input A by input B.

DutyCycle

EnergyManagement

Switches HVAC systems alternating on and off to save energy.

Economy

EnergyManagement

Calculate enthalpy (Ent) and absolute humidity as a function of air temperature, relative air humidity, and air pressure. Use Enthalpy with the Economy function.

Enthalpy

EnergyManagement

Calculate enthalpy (Ent) and absolute humidity as a function of air temperature, relative air humidity, and air pressure. Use Enthalpy with the Economy function.

EOH

EnergyManagement

Calculate optimized values for starting and stopping the heating plant and for the supply water setpoint.

EOV

EnergyManagement

Calculate optimized values for starting and stopping air conditioning systems. Systems should start at the latest possible time and should stop as soon as possible to save energy.

Equal

Comparison

Compares "Comp" input with all other inputs. If at least one input is equal to the "Comp" input, the output is set to true (1).

Exponential

Arithmetic

Calculates the exponential.

Floor

Arithmetic

Calculate the next lower integer of the input value

HeatingCurve

EnergyManagement

Calculates an output according to a user-defined heating compensation curve.

Hysteresis

Controller

On/off controller that generates a digital output depending on the deviation of the controlled variable from the reference variable. Y1 = 1 if X >= W, Y1 = 0 if X < W – Hysteresis. Y2 = 1 if X <= W, Y2 = 0 if X > W + Hysteresis.

InputSwitch

Miscellaneous

Conditional Switch. Switches the value of a specified input to the output, depending on the "In Select" input.

Integral

Controller

Calculate the integral (sum) of the input signal.

J-K Flip-Flop

Logic

Toggles an output depending to the set, clear command and clock conditions

LastValue

Miscellaneous

Provides the current value and the value of the last control cycle.

Limit

Arithmetic

Limits input to a range between minimum and maximum.

Linear

Arithmetic

Calculates the linear product of the inputs.

Linear Converter

Arithmetic

Converts an input value within definable limits to an output value

Ln

Arithmetic

Calculates the natural logarithm.

Mat

Arithmetic

Mat components process one or more StatusNumeric input values and provide a StatusNumeric output value.

Maximum

Comparison

Returns the highest value of all inputs.

Minimum

Comparison

Returns the lowest value of all inputs.

Modulo

Arithmetic

Calculates the remainder of the division A by B.

Monoflop

Timer

Sets the output to true (1) for the time defined in the parameter "signal time".

Multiply

Arithmetic

Multiplies the input values.

Negate

Arithmetic

Negates the analog input value mathematically.

Next Schedule

Miscellaneous

Reads the next scheduled value and the time until the value changes from the schedule

NightPurge

EnergyManagement

Starts and stops ventilation systems to precondition rooms when cold outside air is available during night time.

NOT

Logic

Negates the analog input value mathematically.

On/Off Delay

Timer

Switch On- and Off delay of input "In" to output “Out".

OR

Logic

OR output becomes true (1) if at least one input is true (1). NOR output is the inverted OR output.

OutputSwitch

Miscellaneous

The input is copied to the output selected by the "Y Sel" input. The parameter defines if the other outputs are left unchanged or set to 0.

PIDPlus

Controller

PID-Controller that generates a signal depending on the deviation of the controlled variable from the reference variable.

Ramp

Miscellaneous

Calculates the output value in relation to the input, depending on a pre-defined graph.

Round

Arithmetic

Rounds the input value to the next integer value.

RS Flip-Flop

Logic

Sets the output to true (1) if the "SET" input is true (1) until the "RESET" input becomes true (1).

ScheduledCopy

Miscellaneous

Use for cyclic and not event-driven control. Transmits the input to the output only after the end of the cycle time.

Sequence

Miscellaneous

Calculates three output values in relation to the input, depending on pre-defined graphs.

Sine

Arithmetic

Calculate the sinus function of the input in rad.

Square

Arithmetic

Calculates the product “In” x “In”.

Square Root

Arithmetic

Calculates the square root.

Subtract

Arithmetic

Subtracts the sum of S inputs from the input value M.

Switching Logic

Logic

Switching logic provides a convenient means to implement a point's digital (Boolean) logic control.

Tangent

Arithmetic

Calculate the tangent function of the input in rad.

Time Counter

Timer

Counts the runtime of the input signal.

Truncate

Arithmetic

Truncates the decimal places (3.1 => 3, -3.1 => -3).

ValueRamp

Miscellaneous

Defines the slope by which the output will follow the input.

Window

Miscellaneous

Legacy RACL function: Checks if the input value is within the range between minimum and maximum.

X Root Y

Arithmetic

Calculates the “In Y”‘s root of “In X”.

XOR Table

Logic

XOR output becomes true (1) if exactly one input is true (1). XNOR output is the inverted XOR output.

Zero Energy Band

EnergyManagement

Divides a specified range into Heating range, Zero energy band and Cooling range.