Input Description

Function Block TECT_TEMP_CONTROL

EN (enable)

Data type: BOOL

The Function Block is activated by a rising edge at the input EN. A FALSE keeps the Function Block deactivated. If the Function Block is activated, the values being present at the inputs are processed and the output values are delivered.

PID_INTERVAL

Data type: TIME, Range: > 1 ms, Default value: 2 s.

Interval of PID and AutoTune process.

For PID process: The interval time, at which the PID updates the duty cycle of output based PWM_PERIOD.

PID Interval time

PWM_PERIOD

Data type: TIME, Range: > 1 ms, Default value: 2 s.

Pulse Width Modulation (PWM) output period.

PWM output period

Note

PWM_PERIOD should be always less than or equal to PID_INTERVAL.

FAHRENHEIT

Data type: BOOL

A TRUE at the input FAHRENHEIT of the Funktion Block displays the temperature in Fahrenheit, a FALSE displays the temperature in Celsius.

ACT_TEMP_RAW

Data type: INT

Actual raw temperature value from analogous input sensor.

RAW_FACTOR

Data type: INT, Default value: 10.

Sensor provides the the ACT_TEMP_RAW, this value doesn’t match to the temperature in Celcius. Hence RAW_FACTOR is necessary to scale the temperature into Celsius scale.

Example for RAW_FACTOR

If ACT_TEMP_RAW is 200 which indicates 20 degree, then the RAW_FACTOR will be 200 / 20 = 10.

Note

The RAW_FACTOR should not be zero.

ADR_ZONEDATA

Data type: POINTER TO TECT_TEMPZONE_DATA_TYPE

POINTER TO ZONEDATA defined as TECT_TEMPZONE_DATA_TYPE.

Input as POINTER TO ZoneData. This variable can be connected to the output signal of the ADR-Block. An input variable ZoneData saves all relevant parameters, settings and values for one temperature zone. All Function Blocks for the zone interact with each other through ZoneData variable Temperature Control Library.