Recent posts to Calling a User functionhttps://forge.codesys.com/forge/talk/CODESYS-V2/thread/3bb9db74c8/2020-02-27T22:26:27.845000ZRecent posts to Calling a User functionCalling a User function2020-02-27T22:26:27.845000Z2020-02-27T22:26:27.845000ZSCADAdochttps://forge.codesys.com/u/scadadoc/https://forge.codesys.comd6a87e370b07d7f5d78a0ef9275423eaedf5897e<div class="markdown_content"><p>Hi Singleton -<br/>
Thank you for your reply - that works perfectly! I appreciate your help.</p></div>Calling a User function2020-02-27T22:26:26.176000Z2020-02-27T22:26:26.176000Zsingletonhttps://forge.codesys.com/u/singleton/https://forge.codesys.com978a44645dfa008c2ff816b8e5872224c1e3c415<div class="markdown_content"><p>Hi,<br/>
the return value of the function is its name:</p>
<div class="codehilite"><pre><span></span><span class="k">IF</span> <span class="nv">variable</span> <span class="o">>=</span> <span class="nv">setpoint</span> <span class="k">THEN</span>
<span class="nv">Alarm</span> :<span class="o">=</span><span class="nv">TRUE</span><span class="c1">;</span>
<span class="k">ELSE</span>
<span class="nv">Alarm</span> :<span class="o">=</span><span class="nv">FALSE</span><span class="c1">;</span>
<span class="nv">END_IF</span>
</pre></div>
</div>Calling a User function2020-02-27T22:26:21.761000Z2020-02-27T22:26:21.761000ZSCADAdochttps://forge.codesys.com/u/scadadoc/https://forge.codesys.combd4fa1a57f9c0af5c7aceed265cba6d558f8c68c<div class="markdown_content"><p>Hello - Below is the code I am having trouble with. I can accomplish this simple task by using the Function Block type for "Alarm", but I've never use a straight "Function" before and I wanted to try it. I cannot seem to pick out how to get the "Alarm" solution returned to PLC_PRG. Could someone please help? TIA.</p>
<p>PROGRAM PLC_PRG<br/>
VAR<br/>
Level_SP : INT := 35;<br/>
Current_Level : INT:= 40;<br/>
Level_Alarm : BOOL;<br/>
END_VAR<br/>
==========<br/>
Level_Alarm := Alarm(Level_SP, Current_Level);</p>
<h1 id="_1">==============</h1>
<p>FUNCTION Alarm : BOOL<br/>
VAR_INPUT<br/>
setpoint:INT;<br/>
variable:INT;<br/>
END_VAR</p>
<p>VAR<br/>
output:BOOL;<br/>
END_VAR<br/>
============<br/>
IF variable >= setpoint THEN<br/>
output :=TRUE;<br/>
ELSE<br/>
output :=FALSE;<br/>
END_IF<br/>
===============<br/>
================</p></div>