{"id":9509,"date":"2021-12-20T23:48:59","date_gmt":"2021-12-20T23:48:59","guid":{"rendered":"https:\/\/bryceautomation.com\/?p=9509"},"modified":"2021-12-22T10:56:48","modified_gmt":"2021-12-22T10:56:48","slug":"function-blocks-for-plantpax-pid","status":"publish","type":"post","link":"https:\/\/bryceautomation.com\/index.php\/2021\/12\/20\/function-blocks-for-plantpax-pid\/","title":{"rendered":"Function Blocks for PlantPAx PID"},"content":{"rendered":"\n<h3 class=\"wp-block-heading\">Introduction to Function Blocks for PlantPAx PID<\/h3>\n\n\n\n<p>In this section, we&#8217;ll add our Function Blocks for PlantPAx PID.  In our previous sections, we <a href=\"https:\/\/bryceautomation.com\/index.php\/2021\/12\/20\/preparing-plantpax-for-pid\/\">imported the add-on instructions.<\/a>  At this point, we are ready to set up our function block logic.  <\/p><div id=\"bryce-539982750\" class=\"bryce-afterfirst bryce-entity-placement\"><script async src=\"\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-8316758073402323\" crossorigin=\"anonymous\"><\/script><ins class=\"adsbygoogle\" style=\"display:block;\" data-ad-client=\"ca-pub-8316758073402323\" \ndata-ad-slot=\"7728240895\" \ndata-ad-format=\"auto\"><\/ins>\n<script> \n(adsbygoogle = window.adsbygoogle || []).push({}); \n<\/script>\n<\/div>\n\n\n\n<p>If you have not already done so, created a periodic task with a program for the PID Logic.  After that, add three routines:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>MainRoutine<\/li><li>FlowControl<\/li><li>LevelControl<\/li><\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"209\" height=\"159\" data-src=\"https:\/\/bryceautomation.com\/wp-content\/uploads\/2021\/12\/image-177.png\" alt=\"\" class=\"wp-image-9510 lazyload\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 209px; --smush-placeholder-aspect-ratio: 209\/159;\" \/><\/figure>\n\n\n\n<p>Be sure to go to the properties of your MainProgram, and make sure the MainRoutine is indeed configured as Main.  Also, don&#8217;t forget to add  your JSR Instructions to the MainRoutine.  Otherwise, the processor will not scan FlowControl, or LevelControl.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Add your Logic to Function Blocks for PlantPAx PID<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">Analog Input for Flow<\/h4>\n\n\n\n<p>To begin, let&#8217;s open the FlowControl routine.  On Sheet #1, we&#8217;ll add a PAIChan instruction and a P_AIn instruction.  We&#8217;ll also need an IREF and an OCON.  The OCON simply has a label, not a tag.  This allows us to feed data into another sheet later on.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"364\" data-src=\"https:\/\/bryceautomation.com\/wp-content\/uploads\/2021\/12\/image-178-1024x364.png\" alt=\"\" class=\"wp-image-9511 lazyload\" data-srcset=\"https:\/\/bryceautomation.com\/wp-content\/uploads\/2021\/12\/image-178-1024x364.png 1024w, https:\/\/bryceautomation.com\/wp-content\/uploads\/2021\/12\/image-178-300x107.png 300w, https:\/\/bryceautomation.com\/wp-content\/uploads\/2021\/12\/image-178-768x273.png 768w, https:\/\/bryceautomation.com\/wp-content\/uploads\/2021\/12\/image-178.png 1130w\" data-sizes=\"(max-width: 1024px) 100vw, 1024px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 1024px; --smush-placeholder-aspect-ratio: 1024\/364;\" \/><\/figure>\n\n\n\n<p>FlowProcessVariable is an alias that points to the Analog Input Channel that our Flow Process Variable connects to.  Our P_AIChan instruction simply conditions the input, and checks for faults.  The P_AIChan will provide a standard scaled value to the P_AIn instruction.  We will configure these later on from the HMI Faceplate.   <\/p>\n\n\n\n<p>When you drop in the instructions, Studio 5000 creates a default tag name.  Simply go to the properties of the default tag name, and rename them.  The name of the channel is very important.  The channel must have the exact same name of the P_AIn instruction it connects to&#8230;  with one difference.  The Channel needs &#8220;_Chan&#8221; immediately following the name of the analog input instruction.  For the OREF, simply type the label &#8220;ProcessVariable&#8221;.  On another sheet, we&#8217;ll feed this value to the PID instruction.  The labels for IREF and OREF are local to the routine they reside in.  This means that we can freely use these same labels on other routines.  Remember, they are not tags.  <\/p>\n\n\n\n<p>Be sure to label the entire sheet as &#8220;FlowPV&#8221;.  Enter the name in the upper right hand corner of sheet 1.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Flow Control<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">Analog Output for Flow<\/h4>\n\n\n\n<p>At this point, we&#8217;ll create a new sheet.  Press the &#8220;New Sheet&#8221; icon.  This is the third icon from the left of our function block toolbar.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"247\" height=\"36\" data-src=\"https:\/\/bryceautomation.com\/wp-content\/uploads\/2021\/12\/image-179.png\" alt=\"\" class=\"wp-image-9512 lazyload\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 247px; --smush-placeholder-aspect-ratio: 247\/36;\" \/><\/figure>\n\n\n\n<p>Name this sheet &#8220;FlowCV&#8221;.  This instruction will handle our analog output for the Control Variable.  Set up your logic as follows:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"833\" height=\"400\" data-src=\"https:\/\/bryceautomation.com\/wp-content\/uploads\/2021\/12\/image-180.png\" alt=\"\" class=\"wp-image-9513 lazyload\" data-srcset=\"https:\/\/bryceautomation.com\/wp-content\/uploads\/2021\/12\/image-180.png 833w, https:\/\/bryceautomation.com\/wp-content\/uploads\/2021\/12\/image-180-300x144.png 300w, https:\/\/bryceautomation.com\/wp-content\/uploads\/2021\/12\/image-180-768x369.png 768w\" data-sizes=\"(max-width: 833px) 100vw, 833px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 833px; --smush-placeholder-aspect-ratio: 833\/400;\" \/><\/figure>\n\n\n\n<p>As you can see, we need an ICON (Input Connector), a P_AOut instruction, and an OREF.  The ICON simply feeds the control variable in from the PID Instruction.  You will need to go to the properties of the P_AOut instruction to turn on visibility for the PSet_CV.  Do this before you attempt to tie the ICON into the P_AOut.<\/p>\n\n\n\n<p>Lastly, our Out_CV of the P_AOut will go to the OREF.  The tag on the OREF is our FlowControlVariable.  This is simply an alias to the real world output channel that our field device connects to.  Don&#8217;t forget to rename the tag for the P_AOut instruction.  You must right click the tag name and edit the tag&#8217;s properties to do this.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">P_PIDE Instruction for Flow<\/h4>\n\n\n\n<p>Lastly, we&#8217;ll add another sheet for the P_PIDE instruction in PlantPAx.  Add another sheet as we did before.  Be sure to label this sheet &#8220;FlowPID&#8221;.  Set up your logic as follows:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"841\" height=\"311\" data-src=\"https:\/\/bryceautomation.com\/wp-content\/uploads\/2021\/12\/image-181.png\" alt=\"\" class=\"wp-image-9514 lazyload\" data-srcset=\"https:\/\/bryceautomation.com\/wp-content\/uploads\/2021\/12\/image-181.png 841w, https:\/\/bryceautomation.com\/wp-content\/uploads\/2021\/12\/image-181-300x111.png 300w, https:\/\/bryceautomation.com\/wp-content\/uploads\/2021\/12\/image-181-768x284.png 768w\" data-sizes=\"(max-width: 841px) 100vw, 841px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 841px; --smush-placeholder-aspect-ratio: 841\/311;\" \/><\/figure>\n\n\n\n<p>Please remember to rename the P_PIDE&#8217;s tag.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Level Control<\/h3>\n\n\n\n<p>Later on, we will set up a cascading PID system, and we&#8217;ll involve a tank level in that configuration.  For now, let&#8217;s go ahead and set up the routine.  Open your LevelControl Routine<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Analog Input for Level<\/h3>\n\n\n\n<p>As before, on sheet 1, we&#8217;ll add the following logic:<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"177\" data-src=\"https:\/\/bryceautomation.com\/wp-content\/uploads\/2021\/12\/image-182-1024x177.png\" alt=\"\" class=\"wp-image-9515 lazyload\" data-srcset=\"https:\/\/bryceautomation.com\/wp-content\/uploads\/2021\/12\/image-182-1024x177.png 1024w, https:\/\/bryceautomation.com\/wp-content\/uploads\/2021\/12\/image-182-300x52.png 300w, https:\/\/bryceautomation.com\/wp-content\/uploads\/2021\/12\/image-182-768x133.png 768w, https:\/\/bryceautomation.com\/wp-content\/uploads\/2021\/12\/image-182.png 1155w\" data-sizes=\"(max-width: 1024px) 100vw, 1024px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 1024px; --smush-placeholder-aspect-ratio: 1024\/177;\" \/><\/figure>\n\n\n\n<p>Don&#8217;t forget to edit the properties of each instruction to rename the tag.  This will help us to remember the purpose of the tag when we configure the HMI.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">PID Instruction for Level Control<\/h4>\n\n\n\n<p>This time, since we will be using cascading control, we do not need a control variable.   When we configure the cascading PID,  the CV will go directly to the setpoint of our flow controller.<\/p>\n\n\n\n<p>The only thing left is to set up the PID Instruction:  Be sure to create the tag &#8220;SPFromLevelPID&#8221;.  It will have a REAL data type.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"869\" height=\"325\" data-src=\"https:\/\/bryceautomation.com\/wp-content\/uploads\/2021\/12\/image-224.png\" alt=\"\" class=\"wp-image-9640 lazyload\" data-srcset=\"https:\/\/bryceautomation.com\/wp-content\/uploads\/2021\/12\/image-224.png 869w, https:\/\/bryceautomation.com\/wp-content\/uploads\/2021\/12\/image-224-300x112.png 300w, https:\/\/bryceautomation.com\/wp-content\/uploads\/2021\/12\/image-224-768x287.png 768w\" data-sizes=\"(max-width: 869px) 100vw, 869px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 869px; --smush-placeholder-aspect-ratio: 869\/325;\" \/><\/figure>\n\n\n\n<p>As before, don&#8217;t forget to rename the tag.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Summary<\/h3>\n\n\n\n<p>In Short, all we did in this section was add our logic.  This logic will get the processvariable from the analog input channel.  The logic then scales the value, and sends it to the PID.  In the flow controller, we feed the output of the PID through an AOut instruction.  This will scale engineering units back into raw data.  The Analog Output channel uses this data to provide a voltage to our simulator.  In the next section, we&#8217;ll <a href=\"https:\/\/bryceautomation.com\/index.php\/2021\/12\/21\/associating-plantpax-objects-for-pid\/\">associate the PlantPAx HMI objects to the tags we just created in our processor.<\/a><\/p>\n\n\n\n<p>&#8212; Ricky Bryce<\/p>\n<div id=\"bryce-1188737100\" class=\"bryce-after-content bryce-entity-placement\"><script async src=\"\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-8316758073402323\" crossorigin=\"anonymous\"><\/script><ins class=\"adsbygoogle\" style=\"display:block;\" data-ad-client=\"ca-pub-8316758073402323\" \ndata-ad-slot=\"4667596182\" \ndata-ad-format=\"auto\"><\/ins>\n<script> \n(adsbygoogle = window.adsbygoogle || []).push({}); \n<\/script>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Introduction to Function Blocks for PlantPAx PID In this section, we&#8217;ll add our Function Blocks for PlantPAx PID. In our previous sections, we imported the add-on instructions. At this point, we are ready to set up our function block logic. If you have not already done so, created a periodic task with a program for <a class=\"moretag btn btn-primary\" href=\"https:\/\/bryceautomation.com\/index.php\/2021\/12\/20\/function-blocks-for-plantpax-pid\/\">Read More \u00bb<\/a><\/p>\n","protected":false},"author":1,"featured_media":9516,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[410,195],"tags":[413,48,196],"class_list":{"0":"post-9509","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-pid","8":"category-plantpax","9":"tag-p_pide","10":"tag-pid","11":"tag-plantpax","12":"czr-hentry"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Function Blocks for PlantPAx PID - Bryce Automation<\/title>\n<meta name=\"description\" content=\"Setting up function blocks for PlantPAx PID. We&#039;ll create a period task, add our routines, and create logic for PlantPAx PID.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/bryceautomation.com\/index.php\/2021\/12\/20\/function-blocks-for-plantpax-pid\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Function Blocks for PlantPAx PID - Bryce Automation\" \/>\n<meta property=\"og:description\" content=\"Setting up function blocks for PlantPAx PID. 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