https://forge.codesys.com/forge/talk/Engineering/thread/a9c6cef95e/2020-02-27T13:54:22.180000ZRecent posts to Analog Sgnals in CodeSys V32020-02-27T13:54:22.180000Z2020-02-27T13:54:22.180000ZLuigihttps://forge.codesys.com/u/luigi/https://forge.codesys.combefc2ac99774dec19152d3a114b3466fbfc6dcd3

<div class="markdown_content"><p>Thank you for your explanation</p></div>

2020-02-27T13:54:21.994000Z2020-02-27T13:54:21.994000Znothinrandomhttps://forge.codesys.com/u/nothinrandom/https://forge.codesys.com58753a2ddb115f07d6b976732845778889c2357b

<div class="markdown_content"><p>You can certainly write your own scaling function...assuming you just started Codesys:</p> <p>Create a function block and give it a name called Scale. Copy this part to the top</p> <p>FUNCTION_BLOCK Scale<br/> VAR_INPUT<br/> xEN : BOOL; (<em> enable </em>)<br/> diInput : DINT; (<em> raw digital input </em>)<br/> diInputMin : DINT; (<em> minimum value expected </em>)<br/> diInputMax : DINT; (<em> maximum value expected </em>)<br/> diOutputMin : DINT; (<em> minimum scaled output </em>)<br/> diOutputMax : DINT; (<em> maximum scaled output </em>)<br/> END_VAR<br/> VAR_OUTPUT<br/> xENO : BOOL; (<em> running </em>)<br/> diScaledOutput : DINT; (<em> scaled output </em>)<br/> END_VAR</p> <p>Now copy this part to the bottom half of screen</p> <p>diScaledOutput := (diInput-diInputMin)*(diOutputMax-diOutputMin)/(diInputMax-diInputMin)+ diOutputMin;</p> <p>For example your analog sensor reads 8000 (assuming some range between 0 and 32767), and this range represents a temperature value of 0 to 100 *C. You should set up your function block, where:<br/> diInput is whatever raw value you have<br/> diInputMin is 0<br/> diInputMax is 32767<br/> diOutputMin is 0<br/> diOutputMax is 100<br/> diScaledOutput should yield 24</p> <p>If you need decimal point, then multiply all inputs by 10, then divide by 10 at the very end and change your output from DINT to REAL</p></div>

2020-02-27T13:54:21.816000Z2020-02-27T13:54:21.816000ZComingback4uhttps://forge.codesys.com/u/comingback4u/https://forge.codesys.com8b68348ffde4be7aaf6f25911256c23e381d7882

<div class="markdown_content"><p>There are a lot of function blocks out there. A standard one is LIN_TRAFO but has some downfalls in my opinion. A good starting point none the less. For an example I would look in the help. If you go to Help-Index and search LIN_TRAFO it will give you everything you need to know. You can just map your inputs and scale values and you are set.</p></div>

2020-02-27T13:54:21.636000Z2020-02-27T13:54:21.636000ZLuigihttps://forge.codesys.com/u/luigi/https://forge.codesys.com864f293c3e44ba21c5b98120448b42a870835e21

<div class="markdown_content"><p>Can anyone tell me if Codesys V3 has the ability for scaling and unscaling analog signals? Do anyone have a good example for working within CodeSys with analog signals as newbie? In TIA Portal we have function blocks, do CodeSys also have one?</p></div>