{"id":1701,"date":"2021-04-02T13:39:31","date_gmt":"2021-04-02T13:39:31","guid":{"rendered":"https:\/\/imperix.com\/doc\/?p=1701"},"modified":"2025-11-21T12:54:53","modified_gmt":"2025-11-21T12:54:53","slug":"tunable-parameter","status":"publish","type":"post","link":"https:\/\/imperix.com\/doc\/software\/tunable-parameter","title":{"rendered":"Tunable parameter"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 ez-toc-wrap-right-text counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/imperix.com\/doc\/software\/tunable-parameter\/#Simulink-block\" >Simulink block<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/imperix.com\/doc\/software\/tunable-parameter\/#Signal-specification\" >Signal specification<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/imperix.com\/doc\/software\/tunable-parameter\/#Standard-parameters\" >Standard parameters<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/imperix.com\/doc\/software\/tunable-parameter\/#Simulation-parameters\" >Simulation parameters<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/imperix.com\/doc\/software\/tunable-parameter\/#PLECS-block\" >PLECS block<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/imperix.com\/doc\/software\/tunable-parameter\/#Signal-specification-2\" >Signal specification<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/imperix.com\/doc\/software\/tunable-parameter\/#Standard-parameters-2\" >Standard parameters<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/imperix.com\/doc\/software\/tunable-parameter\/#Simulation-parameters-2\" >Simulation parameters<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/imperix.com\/doc\/software\/tunable-parameter\/#C-functions\" >C++ functions<\/a><\/li><\/ul><\/nav><\/div>\n\n<p>The tunable parameter block creates a variable that can be altered in real-time using <a href=\"https:\/\/imperix.com\/software\/cockpit\/\">imperix Cockpit<\/a>. It supports the\u00a0<strong>int32<\/strong>,\u00a0<strong>uint32<\/strong>, and\u00a0<strong>float<em>\u00a0<\/em><\/strong>data types.<\/p>\n\n\n\n<p>Simultaneously, the tunable parameter can also be modified through the CAN bus similar to a <a href=\"https:\/\/imperix.com\/doc\/software\/can-input-mailbox\">CAN input mailbox<\/a> or\u00a0via UDP\/IP, similar to an <a href=\"https:\/\/imperix.com\/doc\/software\/ethernet-input-mailbox\">UDP input mailbox<\/a>.<\/p>\n\n\n\n<p>In simulation, the block can be configured to perform steps at predefined timestamps.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Simulink-block\"><\/span>Simulink block<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Signal-specification\"><\/span>Signal specification<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:66.66%\">\n<p>The block propagates the variable value to its output signal.<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.33%\"><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"109\" height=\"29\" src=\"https:\/\/imperix.com\/doc\/wp-content\/uploads\/2022\/04\/tunable_parameter.png\" alt=\"\" class=\"wp-image-12091\"\/><\/figure>\n<\/div><\/div>\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Standard-parameters\"><\/span>Standard parameters<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>Variable name<\/code>: sets the variable name. This name must start with a character and must not contain any spaces or special characters except for the \u201c_\u201c character.<\/li>\n\n\n\n<li><code>Initial value<\/code> (vectorizable): sets the initial value of the variable.<\/li>\n\n\n\n<li><code>Data type<\/code>: sets the variable type (<em>int32<\/em>, an <em>uint32<\/em>, or <em>single<\/em>)<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Simulation-parameters\"><\/span>Simulation parameters<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>Simulation output<\/code>\u00a0must be set to <em>steps<\/em> to enable the generation of steps in simulation.<\/li>\n\n\n\n<li><code>Step times<\/code> (vectorizable) specifies the time points when the steps occurs (in seconds).<\/li>\n\n\n\n<li><code>Data points<\/code> (vectorizable) specifies the steps to perform at each defined time point.<\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"369\" height=\"442\" src=\"https:\/\/imperix.com\/doc\/wp-content\/uploads\/2022\/04\/image-40.png\" alt=\"\" class=\"wp-image-12093\" srcset=\"https:\/\/imperix.com\/doc\/wp-content\/uploads\/2022\/04\/image-40.png 369w, https:\/\/imperix.com\/doc\/wp-content\/uploads\/2022\/04\/image-40-250x300.png 250w\" sizes=\"auto, (max-width: 369px) 100vw, 369px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"369\" height=\"442\" src=\"https:\/\/imperix.com\/doc\/wp-content\/uploads\/2022\/04\/image-44.png\" alt=\"\" class=\"wp-image-12097\" srcset=\"https:\/\/imperix.com\/doc\/wp-content\/uploads\/2022\/04\/image-44.png 369w, https:\/\/imperix.com\/doc\/wp-content\/uploads\/2022\/04\/image-44-250x300.png 250w\" sizes=\"auto, (max-width: 369px) 100vw, 369px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"369\" height=\"442\" src=\"https:\/\/imperix.com\/doc\/wp-content\/uploads\/2022\/04\/image-43.png\" alt=\"\" class=\"wp-image-12096\" srcset=\"https:\/\/imperix.com\/doc\/wp-content\/uploads\/2022\/04\/image-43.png 369w, https:\/\/imperix.com\/doc\/wp-content\/uploads\/2022\/04\/image-43-250x300.png 250w\" sizes=\"auto, (max-width: 369px) 100vw, 369px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"369\" height=\"442\" src=\"https:\/\/imperix.com\/doc\/wp-content\/uploads\/2022\/04\/image-45.png\" alt=\"\" class=\"wp-image-12098\" srcset=\"https:\/\/imperix.com\/doc\/wp-content\/uploads\/2022\/04\/image-45.png 369w, https:\/\/imperix.com\/doc\/wp-content\/uploads\/2022\/04\/image-45-250x300.png 250w\" sizes=\"auto, (max-width: 369px) 100vw, 369px\" \/><\/figure>\n<\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"PLECS-block\"><\/span>PLECS block<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Signal-specification-2\"><\/span>Signal specification<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:66.66%\">\n<p>The block propagates the variable value to its output signal.<\/p>\n\n\n\n<p>When the <code>initial value<\/code> parameter is a vector,&nbsp; <em>N<\/em> variables are created where <em>N<\/em> is the vector size. For example, if the tunable block is named <code>value<\/code> ,&nbsp; 3 variables named <code>value_0<\/code>, <code>value_1<\/code> and <code>value_2<\/code>&nbsp;are created.<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.33%\"><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"110\" height=\"28\" src=\"https:\/\/imperix.com\/doc\/wp-content\/uploads\/2021\/04\/image-109.png\" alt=\"Tunable parameter block PLECS\" class=\"wp-image-2078\"\/><\/figure>\n<\/div><\/div>\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Standard-parameters-2\"><\/span>Standard parameters<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>Name of the tunable parameter<\/code>: sets the variable name. This name must start with a character and must not contain any spaces or special characters except for the \u201c_\u201c character.<\/li>\n\n\n\n<li><code>Initial value<\/code>(vectorizable): sets the initial value of the variable.<\/li>\n\n\n\n<li><code>Signal type<\/code>: sets the variable type (<em>int32<\/em>, an <em>uint32<\/em>, or <em>float32<\/em>)<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Simulation-parameters-2\"><\/span>Simulation parameters<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>Simulation output<\/code>\u00a0must be set to <em>steps<\/em> to enable the generation of steps in simulation.<\/li>\n\n\n\n<li>Step times (vectorizable) specifies the time points when the steps occur (in seconds).<\/li>\n\n\n\n<li><code>Data points<\/code> (vectorizable) specifies the steps to perform at each defined time point.<\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"342\" height=\"382\" src=\"https:\/\/imperix.com\/doc\/wp-content\/uploads\/2022\/04\/image-46.png\" alt=\"\" class=\"wp-image-12099\" srcset=\"https:\/\/imperix.com\/doc\/wp-content\/uploads\/2022\/04\/image-46.png 342w, https:\/\/imperix.com\/doc\/wp-content\/uploads\/2022\/04\/image-46-269x300.png 269w\" sizes=\"auto, (max-width: 342px) 100vw, 342px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"342\" height=\"382\" src=\"https:\/\/imperix.com\/doc\/wp-content\/uploads\/2022\/04\/image-47.png\" alt=\"\" class=\"wp-image-12100\" srcset=\"https:\/\/imperix.com\/doc\/wp-content\/uploads\/2022\/04\/image-47.png 342w, https:\/\/imperix.com\/doc\/wp-content\/uploads\/2022\/04\/image-47-269x300.png 269w\" sizes=\"auto, (max-width: 342px) 100vw, 342px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"342\" height=\"382\" src=\"https:\/\/imperix.com\/doc\/wp-content\/uploads\/2022\/04\/image-48.png\" alt=\"\" class=\"wp-image-12101\" srcset=\"https:\/\/imperix.com\/doc\/wp-content\/uploads\/2022\/04\/image-48.png 342w, https:\/\/imperix.com\/doc\/wp-content\/uploads\/2022\/04\/image-48-269x300.png 269w\" sizes=\"auto, (max-width: 342px) 100vw, 342px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"342\" height=\"382\" src=\"https:\/\/imperix.com\/doc\/wp-content\/uploads\/2022\/04\/image-49.png\" alt=\"\" class=\"wp-image-12102\" srcset=\"https:\/\/imperix.com\/doc\/wp-content\/uploads\/2022\/04\/image-49.png 342w, https:\/\/imperix.com\/doc\/wp-content\/uploads\/2022\/04\/image-49-269x300.png 269w\" sizes=\"auto, (max-width: 342px) 100vw, 342px\" \/><\/figure>\n<\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"Tunableparameter-C++functions\"><span class=\"ez-toc-section\" id=\"C-functions\"><\/span>C++ functions<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>All global variables of type&nbsp;<code>int<\/code>,&nbsp;<code>unsigned int<\/code>, or&nbsp;<code>float<\/code>&nbsp;can be scoped and altered using the BB Control utility software.<\/p>\n\n\n\n<p>Data can be received using the\u00a0<a href=\"https:\/\/imperix.com\/doc\/software\/ethernet-input-mailbox\">UDP input mailbox<\/a>\u00a0or the\u00a0<a href=\"https:\/\/imperix.com\/doc\/software\/can-input-mailbox\">CAN input mailbox<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The tunable parameter block creates a variable that can be altered in real-time using imperix Cockpit. It supports the\u00a0int32,\u00a0uint32, and\u00a0float\u00a0data types. Simultaneously, the tunable parameter&#8230;<\/p>\n","protected":false},"author":4,"featured_media":33315,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"categories":[16],"tags":[],"software-environments":[105,103,104],"provided-results":[],"related-products":[50,31,32,92,166,51,113,114,112,110],"guidedreadings":[],"tutorials":[],"user-manuals":[],"coauthors":[70],"class_list":["post-1701","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-software","software-environments-c-plus-plus","software-environments-matlab","software-environments-plecs","related-products-acg-sdk","related-products-b-board-pro","related-products-b-box-rcp","related-products-b-box-micro","related-products-b-box-rcp-3-0","related-products-cpp-sdk","related-products-mmc","related-products-motor","related-products-peb","related-products-tpi"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - 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