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How to scale analog input for M221?

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jhonut
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How to scale analog input for M221?

I have a TM221CE24R PLC with a TM3AI8 extension. I want to scale an extension's analog input signal . What function or how this could be done?

And another question would be how could I set for analog input channels: measurement type ( voltage, current (2 or 4 wire), resistor, etc), measurement range (0-10V, 0-20mA, 4-20mA, etc)?  

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Bastian_Schmitz
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Re: How to scale analog input for M221?

You can static scale a Analog input directly via ESME Basic. You can see the needed fields in the attached screenshot.M2214.PNG

Minimum is the lowest value of the sensor at 0V

Maximum is the highest value of the sensor at 10V

See Answer In Context

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Bastian_Schmitz
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Re: How to scale analog input for M221?

Hi you can add here a symbol name (IVALUE_1 as example) for the scaled value.

Or you can directly use the Hardware Address %IW1.0

TM221_6.PNG

In the example i use as scale 0...300 for a pressure probel 0..30Bar

In that case means the value 123 = 12,3 Bar.

See Answer In Context

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Bastian_Schmitz
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Re: How to scale analog input for M221?

If you add in configuration the TM3 modul you can open via double click a menu were you canconfigure the Sensor Type and the scaling if you use a Voltage or a current input.

 

m2213.PNG

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jhonut
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Re: How to scale analog input for M221?

@Bastian_Schmitz, thanks for replying!

Any idea how to scale an analog input signal? I didn't find a function similar to the one existing in Machine Expert.

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Bastian_Schmitz
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Re: How to scale analog input for M221?

You can static scale a Analog input directly via ESME Basic. You can see the needed fields in the attached screenshot.M2214.PNG

Minimum is the lowest value of the sensor at 0V

Maximum is the highest value of the sensor at 10V

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jhonut
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Re: How to scale analog input for M221?

@Bastian_Schmitz, I'm a little bit confused. I understood how scaling settings are being done. What I don't understand is how I assign the scaling result to a MW, MD or MF.

Let's say I have a temperature signal 4-20 mA. For 4mA I have 0 °C and for 20mA I have 65°C. These values, 0 and 65, where should be put? Where you wrote 4000 and 20000 for 4-20 mA? If, for example, I get 15mA, the scaling result is about 40°C. How do I get this result?

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Ralf
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Re: How to scale analog input for M221?

Hi @Bastian_Schmitz,

thanks for your quick replies.

 

Hi @jhonut,

 

please find in addition the following link to a 25min video.

Analog input configuration is shown at around 7 min

https://www.youtube.com/watch?v=wE1owCFxO4I

 

Best regards 

Ralf

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Bastian_Schmitz
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4268

Re: How to scale analog input for M221?

Hi you can add here a symbol name (IVALUE_1 as example) for the scaled value.

Or you can directly use the Hardware Address %IW1.0

TM221_6.PNG

In the example i use as scale 0...300 for a pressure probel 0..30Bar

In that case means the value 123 = 12,3 Bar.

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jhonut
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4253

Re: How to scale analog input for M221?

I thought that symbol is assigned to analog input signal. Now it's clear. Thank you very much for your help!

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