Math in PCM

[[Ri...]]

Below is some PCM used in a Result element.
It converts Celsius (C) to Fahrenheit (F).

(getTemperatureCorrection().temperaturePart)* 1.8) + 32)

1. I need to pass this value to a variable: "u_TempStart".
2. How do I use this in a Result element? Can I use it in a Result element?
3. I would like it converted for F.
4. "u_TempStart" is passed to PiWeb. (This part is working without the F conversion) in Post Settings.

setRecordHead("u_TempStart", (getTemperatureCorrection().temperaturePart))
getRecordHead("u_TempStart")

Any assistance is appreciated.

[[Mi...]]

Hello!

I don't think that

setRecordHead("u_TempStart", (getTemperatureCorrection().temperaturePart))

work in a result element. In general the pre- or post-settings are meant for assignments.
Why don't you put

(getTemperatureCorrection().temperaturePart)* 1.8) + 32)

in the result element directly?
As far as I know, the temperature of the workpiece is only measured at the beginning of the CNC-start.

[[Ri...]]

We are not using Compensation, we are just recording a temperature value at Start and End of the programs.
I believe you are correct that

setRecordHead("u_TempStart", (getTemperatureCorrection().temperaturePart))

will not work in a result element.
I attaching the PCM to features.

In the first temp sensor feature Post settings:

StartTemp=(getActual("u_TempStart").temperature)
StartTemp=formatL(StartTemp,3,1)
setRecordHead("u_TempStart",StartTemp)

The End temp sensor feature Post settings:

EndTemp=(getActual("u_TempEnd").temperature)
EndTemp=formatL(EndTemp,3,1)
setRecordHead("u_TempEnd",EndTemp)

Then in the last feature prior to the End temp sensor: (Forces the temp sensor to run).

getActual("Temp End").temperature

It would be a lot simpler if we could do this. (See attached image).

Climate Change.JPG

[[Mi...]]

I assume you use the workpiece senors and not the temperature probe.
You can also use a separate result element with

 readActualWPTemperature("1+2") 

for the start and end temperature.

[[Ri...]]

I am using a RST-T temp sensor.

[[No...]]

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I'm not sure if I'm missing the point here. In my understanding you already successfully converted the value to °F and are also able to assign it to the header variable with setRecordHead.

But why do you want to use setRecordHead() in the result element formula?
I would do all the calculations in the presettings of whatever feature or characteristic and assign the result to a PCM variable:

myTemp=(getTemperatureCorrection().temperaturePart)* 1.8) + 32)

Then use the contents of the PCM variable in the result element or wherever you see fit, by just stating it in the formula:

myTemp

Or am I missing something important? 😕

[[Ri...]]

"setRecordHead" is used for passing the data to a variable.
This is used to pass the data to a custom PiWeb Template.

[[No...]]

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But why does it need to happen in the result element (formula)?

[[Ri...]]

It doesn't, It was an attempt to accomplish the task, but it was the wrong way.