Commissioning of the temperature control

The commissioning of the temperature control includes both a TwinCAT Engineering and a part to be executed at runtime. This sample summarizes the steps that are executed at runtime.

	Commissioning via HMI recommended This sample describes the procedure solely via the PLC path. Use the section Commissioning of the temperature control for commissioning using the HMI.

Before the subsequent steps, the preparation of the TwinCAT project has to be done according to the example from section Mapping and configuration of temperature zones.

Set the appropriate input and output signal types and devices for all their temperature zones

	Hardware parameterization without grouping This step refers to the linear mapping of the TF8540 library. Already configured groupings are ignored in this step.

1. Create a program section to assign the parameters once.

2. Assign the following parameters according to your hardware configuration.

// set cooling output type to “no cooling”
fbTemperature.Channels(1).OutputSel_C  := E_TcPfw_TctrlOutSelect.eTcPfwTcOut_NoSignal;
// set heating output type to “pwm”
fbTemperature.Channels(1).OutputSel_H  := E_TcPfw_TctrlOutSelect.eTcPfwTcOut_PWM;
// set sensor terminal type to “EL3314”
fbTemperature.Channels(1).TempSensTerm := E_TcPfw_TerminalType.eTcPfwTermT_EL331x;
// set sensor type to “ThermoCouple Typ K”
fbTemperature.Channels(1).SensorType   := E_TcPfw_TempSensType.eTcPfwTempSensT_TC_K; 
// set terminal channel of the sensor to “Channel 1”
fbTemperature.Channels(1).TermChannel  := 1;

3. Repeat step 2 for all channels used. If necessary, use a FOR loop or the FB_Temperature.CreateDefaultParams() method to assign an identical parameter for multiple zones.

FOR i := 3 TO MIN(5, fbTemperatureHmi.CountPfwChannels) DO 
    fbTemperature.Channels(i).OutputSel_C := E_TcPfw_TctrlOutSelect.eTcPfwTcOut_PWM; 
END_FOR

4. Execute the created code segment once.

5. Log on to the controller.

6. Save the parameters on your target device via fbTemperature.MachineData.Save.

Commissioning of the temperature control 3:

Check the reaction of the hardware inputs on the machine

1. Log on to the controller.

2. Go in the tree structure fbTemperature.aGroups[…].aZones[…] to the first used zone.

3. Heat the sensor of the zone via an external heat source.

4. Observe via the value ActualTemperature whether the temperature change occurs in the expected zone.
Repeat step 2 to 4 for each zone.
Commissioning of the temperature control 4:

Commissioning of the temperature control 4:

Check the response of the hardware outputs on the machine

	Switching on a zone does not generate a power level Make sure that at the time of this step the temperature control has been enabled by the PLC! To enable all zones execute the method FB_Temperature.EnableAll(…). To enable exactly one group execute the method FB_Temperature.Groups(x).Enable(…).

1. Switch on a single temperature zone via fbTemperature.aGroups[…].Zones[…].Enable.

2. Check if in the same zone the value of the variable Heating = TRUE and the value of the variable ActualTemperature changes.

3. Switch the zone off again as soon as possible to keep the temperature rise to a minimum.

4. Repeat steps 1 to 3 for each zone.
Commissioning of the temperature control 6:

Start the automatic tuning of the control parameters

1. Activate the tuning of a group via fbTemperatureHmi.aGroups[…].DoTune = TRUE.

2. Execute step 1 for all groups to be commissioned.
Commissioning of the temperature control 7:

Monitor the automatic tuning until it completes successfully

1. As soon as the value of the variable fbTemperatureHmi.aGroups[…].TuningActive is reset, the tuning of the group is finished.

Commissioning of the temperature control 8:

2. The value of the variable fbTemperatureHmi.aGroups[…].TuningDone indicates whether the tuning was successful.

You have successfully commissioned your temperature control.