{"id":1665,"date":"2021-04-02T13:33:45","date_gmt":"2021-04-02T13:33:45","guid":{"rendered":"https:\/\/imperix.com\/doc\/?p=1665"},"modified":"2026-03-23T13:13:34","modified_gmt":"2026-03-23T13:13:34","slug":"ethernet-output-mailbox","status":"publish","type":"post","link":"https:\/\/imperix.com\/doc\/software\/ethernet-output-mailbox","title":{"rendered":"UDP out &#8211; Ethernet UDP output mailbox"},"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\/ethernet-output-mailbox\/#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\/ethernet-output-mailbox\/#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\/ethernet-output-mailbox\/#Parameters\" >Parameters<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/imperix.com\/doc\/software\/ethernet-output-mailbox\/#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-5\" href=\"https:\/\/imperix.com\/doc\/software\/ethernet-output-mailbox\/#Parameters-2\" >Parameters<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/imperix.com\/doc\/software\/ethernet-output-mailbox\/#C-functions\" >C++ functions<\/a><\/li><\/ul><\/nav><\/div>\n\n<p>The UDP output mailbox block allows sending up to 1024 bytes of data via Ethernet using the UDP\/IP protocol (in SDK versions prior to 2025.2, the size limit is 8 bytes). To receive data, the <a href=\"https:\/\/imperix.com\/doc\/software\/ethernet-input-mailbox\">UDP input mailbox<\/a> should be used.<\/p>\n\n\n\n<p>The data to send via UDP is formatted as a vector. The <strong>Signal decoding format<\/strong> parameter defines the data type of each element, and the <strong>Number of signals<\/strong> parameter defines the length of the output vector. The data can be interpreted as one of the following types: <em>int8<\/em>, <em>int16<\/em>, <em>int32<\/em>, <em>uint8<\/em>, <em>uint16<\/em>, <em>uint32<\/em>, <em>float32<\/em>, or <em>float64<\/em>.<\/p>\n\n\n\n<p>Example: if <strong><strong>Signal decoding format<\/strong><\/strong> is set to <strong><em>uint32 <\/em><\/strong>(4 bytes) and <strong>Number of signals<\/strong> is <em>100<\/em>, then:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Size of the UDP data = <strong>4 \u00d7 100 = 400 bytes<\/strong><\/li>\n\n\n\n<li>Output = vector of <strong>100 uint32 elements<\/strong><\/li>\n<\/ul>\n\n\n\n<p>The block supports two <strong>Data transmission mode<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><em>On-demand<\/em>: the user manually triggers the message transmissions.<\/li>\n\n\n\n<li><em>Periodically<\/em>: the message is sent periodically, whether the data has been changed or not. The user can configure the transmission frequency.<\/li>\n<\/ul>\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<ul class=\"wp-block-list\">\n<li>The first input is the data to send. The accepted data type is specified by the <strong>Signal coding format<\/strong> parameter. This data can be provided as a vector, with its size defined by the <strong>Number of signals<\/strong> parameter.<\/li>\n\n\n\n<li>The second input is the&nbsp;<em>send data<\/em>&nbsp;signal. It is used to initiate a data transmission when the <strong>Data transmission mode<\/strong> is set to&nbsp;<em>On-demand<\/em><strong>&nbsp;<\/strong>mode has been selected. Data is sent upon a rising edge on this signal.<\/li>\n<\/ul>\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-full\"><img loading=\"lazy\" decoding=\"async\" width=\"114\" height=\"71\" src=\"https:\/\/imperix.com\/doc\/wp-content\/uploads\/2021\/04\/udp_out.png\" alt=\"\" class=\"wp-image-37182\"\/><\/figure>\n<\/div><\/div>\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"Ethernetoutputmailbox-Parameters\"><span class=\"ez-toc-section\" id=\"Parameters\"><\/span>Parameters<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Ethernet port number<\/strong>: sets the destination port to which the data will be sent.<\/li>\n\n\n\n<li><strong>Ethernet IP address<\/strong> : selects the IP address to whom the data will be sent.<\/li>\n\n\n\n<li><strong>Signal coding format<\/strong>: defines the data type accepted in the data&nbsp;input (<em>int8<\/em>, <em>int16<\/em>, <em>int32<\/em>, <em>uint8<\/em>, <em>uint16<\/em>, <em>uint32<\/em>, <em>float32<\/em>, or <em>float64<\/em>).<\/li>\n\n\n\n<li><strong>Number of signals<\/strong>: specifies the vector size of the data to be sent.<\/li>\n\n\n\n<li><strong>Byte order<\/strong> : defines the byte order in which the data will be sent. (<em>Little-endian<\/em> or <em>Big-endian<\/em>)<\/li>\n\n\n\n<li><strong>Tx frequency<\/strong> : sets the data transmission frequency if the&nbsp;<strong>Data transmission mode<\/strong> is set to&nbsp;<em>Periodically<\/em>.<\/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-full\"><img loading=\"lazy\" decoding=\"async\" width=\"411\" height=\"551\" src=\"https:\/\/imperix.com\/doc\/wp-content\/uploads\/2025\/07\/ETH-out-mailbox-mask-1-simulink.png\" alt=\"Ethernet output mailbox Simulink dialog parameters port configuration\" class=\"wp-image-33870\" srcset=\"https:\/\/imperix.com\/doc\/wp-content\/uploads\/2025\/07\/ETH-out-mailbox-mask-1-simulink.png 411w, https:\/\/imperix.com\/doc\/wp-content\/uploads\/2025\/07\/ETH-out-mailbox-mask-1-simulink-224x300.png 224w\" sizes=\"auto, (max-width: 411px) 100vw, 411px\" \/><\/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-full\"><img loading=\"lazy\" decoding=\"async\" width=\"411\" height=\"551\" src=\"https:\/\/imperix.com\/doc\/wp-content\/uploads\/2025\/07\/ETH-out-mailbox-mask-2-simulink.png\" alt=\"Ethernet output mailbox Simulink dialog parameters IP address\" class=\"wp-image-33871\" srcset=\"https:\/\/imperix.com\/doc\/wp-content\/uploads\/2025\/07\/ETH-out-mailbox-mask-2-simulink.png 411w, https:\/\/imperix.com\/doc\/wp-content\/uploads\/2025\/07\/ETH-out-mailbox-mask-2-simulink-224x300.png 224w\" sizes=\"auto, (max-width: 411px) 100vw, 411px\" \/><\/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<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<ul class=\"wp-block-list\">\n<li>The first input is the data to send. The accepted data type is specified by the <strong>Signal coding format<\/strong> parameter. This data can be provided as a vector, with its size defined by the <strong>Number of signals<\/strong> parameter.<\/li>\n\n\n\n<li>The second input is the&nbsp;<em>send data<\/em>&nbsp;signal. It is used to initiate a data transmission when the <strong>Data transmission mode<\/strong> is set to&nbsp;<em>On-demand<\/em><strong>&nbsp;<\/strong>mode has been selected. Data is sent upon a rising edge on this signal.<\/li>\n<\/ul>\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-full\"><img loading=\"lazy\" decoding=\"async\" width=\"111\" height=\"89\" src=\"https:\/\/imperix.com\/doc\/wp-content\/uploads\/2021\/04\/UDP_out_plecs.png\" alt=\"\" class=\"wp-image-37184\"\/><\/figure>\n<\/div><\/div>\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Parameters-2\"><\/span>Parameters<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Ethernet port number<\/strong>: sets the destination port to which the data will be sent.<\/li>\n\n\n\n<li><strong>Ethernet IP address<\/strong> : selects the IP address to whom the data will be sent.<\/li>\n\n\n\n<li><strong>Signal coding format<\/strong>: defines the data type accepted in the data&nbsp;input (<em>int8<\/em>, <em>int16<\/em>, <em>int32<\/em>, <em>uint8<\/em>, <em>uint16<\/em>, <em>uint32<\/em>, <em>float32<\/em>, or <em>float64<\/em>).<\/li>\n\n\n\n<li><strong>Number of signals<\/strong>: specifies the vector size of the data to be sent.<\/li>\n\n\n\n<li><strong>Byte order<\/strong> : defines the byte order in which the data will be sent. (<em>Little-endian<\/em> or <em>Big-endian<\/em>)<\/li>\n\n\n\n<li><strong>Tx frequency<\/strong> : sets the data transmission frequency if the&nbsp;<strong>Data transmission mode<\/strong> is set to&nbsp;<em>Periodically<\/em>.<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"452\" height=\"414\" src=\"https:\/\/imperix.com\/doc\/wp-content\/uploads\/2021\/04\/ETH-out-mailbox-mask-plecs-2.png\" alt=\"Ethernet output mailbox PLECS dialog\" class=\"wp-image-33893\" srcset=\"https:\/\/imperix.com\/doc\/wp-content\/uploads\/2021\/04\/ETH-out-mailbox-mask-plecs-2.png 452w, https:\/\/imperix.com\/doc\/wp-content\/uploads\/2021\/04\/ETH-out-mailbox-mask-plecs-2-300x275.png 300w\" sizes=\"auto, (max-width: 452px) 100vw, 452px\" \/><\/figure>\n<\/div>\n\n\n<div class=\"wp-block-simple-alerts-for-gutenberg-alert-boxes sab-alert sab-alert-info\" role=\"alert\">The Ethernet IP addresses can be configured in the Imperix Controllers&#8217; target window (<em>Coder<\/em>\u00a0\u2192\u00a0<em>Coder option<\/em>\u00a0\u2192\u00a0<em>Target<\/em>).<\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"C-functions\"><\/span>C++ functions<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h4 class=\"wp-block-heading\">Standard functions<\/h4>\n\n\n<style>.kt-accordion-id1665_7fb71d-30 .kt-accordion-inner-wrap{column-gap:var(--global-kb-gap-md, 2rem);row-gap:1px;}.kt-accordion-id1665_7fb71d-30 .kt-accordion-panel-inner{border-top:2px solid transparent;border-right:2px solid transparent;border-bottom:2px solid transparent;border-left:2px solid transparent;border-top-left-radius:2px;border-top-right-radius:2px;border-bottom-right-radius:2px;border-bottom-left-radius:2px;background:#ffffff;padding-top:20px;padding-right:20px;padding-bottom:20px;padding-left:20px;}.kt-accordion-id1665_7fb71d-30 > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header{border-top:2px solid #f2f2f2;border-right:2px solid #f2f2f2;border-bottom:2px solid #f2f2f2;border-left:2px solid #f2f2f2;border-top-left-radius:2px;border-top-right-radius:2px;border-bottom-right-radius:2px;border-bottom-left-radius:2px;background:#ffffff;font-size:16px;line-height:24px;letter-spacing:0px;font-weight:bold;text-transform:none;color:var(--global-palette3, #1A202C);padding-top:12px;padding-right:10px;padding-bottom:8px;padding-left:16px;}.kt-accordion-id1665_7fb71d-30:not( .kt-accodion-icon-style-basiccircle ):not( .kt-accodion-icon-style-xclosecircle ):not( .kt-accodion-icon-style-arrowcircle )  > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap .kt-blocks-accordion-icon-trigger:after, .kt-accordion-id1665_7fb71d-30:not( .kt-accodion-icon-style-basiccircle ):not( .kt-accodion-icon-style-xclosecircle ):not( .kt-accodion-icon-style-arrowcircle )  > .kt-accordion-inner-wrap > 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.kt-blocks-accordion-header:focus-visible{color:#444444;background:#ffffff;border-top:2px solid #eeeeee;border-right:2px solid #eeeeee;border-bottom:2px solid #eeeeee;border-left:2px solid #eeeeee;}.kt-accordion-id1665_7fb71d-30:not( .kt-accodion-icon-style-basiccircle ):not( .kt-accodion-icon-style-xclosecircle ):not( .kt-accodion-icon-style-arrowcircle ) .kt-accordion-header-wrap .kt-blocks-accordion-header:hover .kt-blocks-accordion-icon-trigger:after, .kt-accordion-id1665_7fb71d-30:not( .kt-accodion-icon-style-basiccircle ):not( .kt-accodion-icon-style-xclosecircle ):not( .kt-accodion-icon-style-arrowcircle ) .kt-accordion-header-wrap .kt-blocks-accordion-header:hover .kt-blocks-accordion-icon-trigger:before, body:not(.hide-focus-outline) .kt-accordion-id1665_7fb71d-30:not( .kt-accodion-icon-style-basiccircle ):not( .kt-accodion-icon-style-xclosecircle ):not( .kt-accodion-icon-style-arrowcircle ) .kt-blocks-accordion--visible .kt-blocks-accordion-icon-trigger:after, body:not(.hide-focus-outline) .kt-accordion-id1665_7fb71d-30:not( .kt-accodion-icon-style-basiccircle ):not( .kt-accodion-icon-style-xclosecircle ):not( .kt-accodion-icon-style-arrowcircle ) .kt-blocks-accordion-header:focus-visible .kt-blocks-accordion-icon-trigger:before{background:#444444;}.kt-accordion-id1665_7fb71d-30:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-accordion-header-wrap .kt-blocks-accordion-header:hover .kt-blocks-accordion-icon-trigger, body:not(.hide-focus-outline) .kt-accordion-id1665_7fb71d-30:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-accordion-header-wrap .kt-blocks-accordion-header:focus-visible .kt-blocks-accordion-icon-trigger{background:#444444;}.kt-accordion-id1665_7fb71d-30:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-accordion-header-wrap .kt-blocks-accordion-header:hover .kt-blocks-accordion-icon-trigger:after, .kt-accordion-id1665_7fb71d-30:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-accordion-header-wrap .kt-blocks-accordion-header:hover .kt-blocks-accordion-icon-trigger:before, body:not(.hide-focus-outline) .kt-accordion-id1665_7fb71d-30:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-accordion-header-wrap .kt-blocks-accordion-header:focus-visible .kt-blocks-accordion-icon-trigger:after, body:not(.hide-focus-outline) .kt-accordion-id1665_7fb71d-30:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-accordion-header-wrap .kt-blocks-accordion-header:focus-visible .kt-blocks-accordion-icon-trigger:before{background:#ffffff;}.kt-accordion-id1665_7fb71d-30 .kt-accordion-header-wrap .kt-blocks-accordion-header:focus-visible,\n\t\t\t\t.kt-accordion-id1665_7fb71d-30 > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header.kt-accordion-panel-active{color:var(--global-palette3, #1A202C);background:var(--global-palette9, #ffffff);border-top:2px solid var(--global-palette6, #718096);border-right:2px solid var(--global-palette6, #718096);border-bottom:2px solid var(--global-palette6, #718096);border-left:2px solid var(--global-palette6, #718096);}.kt-accordion-id1665_7fb71d-30:not( .kt-accodion-icon-style-basiccircle ):not( .kt-accodion-icon-style-xclosecircle ):not( .kt-accodion-icon-style-arrowcircle )  > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header.kt-accordion-panel-active .kt-blocks-accordion-icon-trigger:after, .kt-accordion-id1665_7fb71d-30:not( .kt-accodion-icon-style-basiccircle ):not( .kt-accodion-icon-style-xclosecircle ):not( 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.kt-blocks-accordion-icon-trigger:before{background:var(--global-palette9, #ffffff);}@media all and (max-width: 1024px){.kt-accordion-id1665_7fb71d-30 .kt-accordion-panel-inner{border-top:2px solid transparent;border-right:2px solid transparent;border-bottom:2px solid transparent;border-left:2px solid transparent;}}@media all and (max-width: 1024px){.kt-accordion-id1665_7fb71d-30 > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header{border-top:2px solid #f2f2f2;border-right:2px solid #f2f2f2;border-bottom:2px solid #f2f2f2;border-left:2px solid #f2f2f2;}}@media all and (max-width: 1024px){.kt-accordion-id1665_7fb71d-30 > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header:hover, \n\t\t\t\tbody:not(.hide-focus-outline) .kt-accordion-id1665_7fb71d-30 .kt-blocks-accordion-header:focus-visible{border-top:2px solid #eeeeee;border-right:2px solid #eeeeee;border-bottom:2px solid #eeeeee;border-left:2px solid #eeeeee;}}@media all and (max-width: 1024px){.kt-accordion-id1665_7fb71d-30 .kt-accordion-header-wrap .kt-blocks-accordion-header:focus-visible,\n\t\t\t\t.kt-accordion-id1665_7fb71d-30 > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header.kt-accordion-panel-active{border-top:2px solid var(--global-palette6, #718096);border-right:2px solid var(--global-palette6, #718096);border-bottom:2px solid var(--global-palette6, #718096);border-left:2px solid var(--global-palette6, #718096);}}@media all and (max-width: 767px){.kt-accordion-id1665_7fb71d-30 .kt-accordion-inner-wrap{display:block;}.kt-accordion-id1665_7fb71d-30 .kt-accordion-inner-wrap .kt-accordion-pane:not(:first-child){margin-top:1px;}.kt-accordion-id1665_7fb71d-30 .kt-accordion-panel-inner{border-top:2px solid transparent;border-right:2px solid transparent;border-bottom:2px solid transparent;border-left:2px solid transparent;}.kt-accordion-id1665_7fb71d-30 > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header{border-top:2px solid #f2f2f2;border-right:2px solid #f2f2f2;border-bottom:2px solid #f2f2f2;border-left:2px solid #f2f2f2;}.kt-accordion-id1665_7fb71d-30 > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header:hover, \n\t\t\t\tbody:not(.hide-focus-outline) .kt-accordion-id1665_7fb71d-30 .kt-blocks-accordion-header:focus-visible{border-top:2px solid #eeeeee;border-right:2px solid #eeeeee;border-bottom:2px solid #eeeeee;border-left:2px solid #eeeeee;}.kt-accordion-id1665_7fb71d-30 .kt-accordion-header-wrap .kt-blocks-accordion-header:focus-visible,\n\t\t\t\t.kt-accordion-id1665_7fb71d-30 > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header.kt-accordion-panel-active{border-top:2px solid var(--global-palette6, #718096);border-right:2px solid var(--global-palette6, #718096);border-bottom:2px solid var(--global-palette6, #718096);border-left:2px solid var(--global-palette6, #718096);}}<\/style>\n<div class=\"wp-block-kadence-accordion alignnone\"><div class=\"kt-accordion-wrap kt-accordion-id1665_7fb71d-30 kt-accordion-has-4-panes kt-active-pane-0 kt-accordion-block kt-pane-header-alignment-left kt-accodion-icon-style-arrow kt-accodion-icon-side-left\" style=\"max-width:none\"><div class=\"kt-accordion-inner-wrap\" data-allow-multiple-open=\"false\" data-start-open=\"none\">\n<div class=\"wp-block-kadence-pane kt-accordion-pane kt-accordion-pane-2 kt-pane1665_0c8591-ec\"><div class=\"kt-accordion-header-wrap\"><button class=\"kt-blocks-accordion-header kt-acccordion-button-label-show\" type=\"button\"><span class=\"kt-blocks-accordion-title-wrap\"><span class=\"kt-blocks-accordion-title\"><code><code>Eth_ConfigureOutputMailbox<\/code> <\/code><strong>\u2014 Configure an Ethernet output mailbox<\/strong><\/span><\/span><span class=\"kt-blocks-accordion-icon-trigger\"><\/span><\/button><\/div><div class=\"kt-accordion-panel kt-accordion-panel-hidden\"><div class=\"kt-accordion-panel-inner\"><pre class=\"wp-block-code\" aria-describedby=\"shcb-language-1\" data-shcb-language-name=\"C++\" data-shcb-language-slug=\"cpp\"><span><code class=\"hljs language-cpp shcb-wrap-lines\"><span class=\"hljs-function\"><span class=\"hljs-keyword\">bool<\/span> <span class=\"hljs-title\">Eth_ConfigureOutputMailbox<\/span><span class=\"hljs-params\">(<span class=\"hljs-keyword\">unsigned<\/span> <span class=\"hljs-keyword\">int<\/span> mailboxId, <span class=\"hljs-keyword\">unsigned<\/span> <span class=\"hljs-keyword\">int<\/span> port, <span class=\"hljs-keyword\">const<\/span> <span class=\"hljs-keyword\">char<\/span>* ipAddress, <span class=\"hljs-keyword\">float<\/span> maxTxFrequency = <span class=\"hljs-number\">100<\/span>, tEndianness endianness = LITTLE_ENDIAN, <span class=\"hljs-keyword\">size_t<\/span> msgLength = <span class=\"hljs-number\">4<\/span>)<\/span><\/span>;<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-1\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">C++<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">cpp<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<p>Configures an Ethernet UDP output mailbox.<\/p>\n\n\n\n<p>Can only be called in&nbsp;<code>UserInit()<\/code>.<\/p>\n\n\n\n<p id=\"Ethernetoutputmailbox-Parameters.1\"><strong>Parameters<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>mailboxId<\/code>: &nbsp;the mailbox unique identifier. This ID must be unique throughout all ETH and CAN input\/output mailboxes<\/li>\n\n\n\n<li><code>port<\/code>: the destination UDP port number to which the data will be sent<\/li>\n\n\n\n<li><code>ipAddress<\/code>: the destination IP address to whom the data will be sent<\/li>\n\n\n\n<li><code>maxTxFrequency<\/code>: maximal frequency at which data can be sent. The frequency must be a multiple of the main interrupt frequency. If the requested frequency is not achievable, it will automatically be set to the closest valid frequency<\/li>\n\n\n\n<li><code>endianness<\/code>: defines the bytes order. BIG_ENDIAN (most significant byte first) or LITTLE_ENDIAN (least significant byte first)<\/li>\n\n\n\n<li><code>msgLength<\/code>: size in bytes of the message, for best perfomance it is advised to keep it under 1024 bytes<\/li>\n<\/ul>\n\n\n\n<p id=\"Ethernetoutputmailbox-Returnvalue\"><strong>Return value<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Returns <strong>false<\/strong> if the maximum output mailboxes limit is exceeded or if the&nbsp;<code>port<\/code>&nbsp;was already assigned to another ETH output mailbox.<\/li>\n<\/ul>\n<\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-kadence-pane kt-accordion-pane kt-accordion-pane-4 kt-pane1665_56a255-3a\"><div class=\"kt-accordion-header-wrap\"><button class=\"kt-blocks-accordion-header kt-acccordion-button-label-show\" type=\"button\"><span class=\"kt-blocks-accordion-title-wrap\"><span class=\"kt-blocks-accordion-title\"><code><code>Eth_Write<\/code> <\/code><strong>\u2014 Write<\/strong><\/span><\/span><span class=\"kt-blocks-accordion-icon-trigger\"><\/span><\/button><\/div><div class=\"kt-accordion-panel kt-accordion-panel-hidden\"><div class=\"kt-accordion-panel-inner\"><pre class=\"wp-block-code\" aria-describedby=\"shcb-language-2\" data-shcb-language-name=\"C++\" data-shcb-language-slug=\"cpp\"><span><code class=\"hljs language-cpp\"><span class=\"hljs-function\"><span class=\"hljs-keyword\">int<\/span> <span class=\"hljs-title\">Eth_Write<\/span><span class=\"hljs-params\">(<span class=\"hljs-keyword\">unsigned<\/span> <span class=\"hljs-keyword\">int<\/span> mailboxId, <span class=\"hljs-keyword\">void<\/span>* data, <span class=\"hljs-keyword\">size_t<\/span> size)<\/span><\/span>;<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-2\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">C++<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">cpp<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<p>Sends a UDP message using the network parameters (IP and Port) defined by the provided <code>mailboxId<\/code>.<\/p>\n\n\n\n<p>Can only be called in the interrupt routine.<\/p>\n\n\n\n<p><strong>Parameters<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>maildboxId<\/code>: the mailbox unique identifier. This ID must be unique throughout all ETH and CAN input\/output mailboxes<\/li>\n\n\n\n<li><code>data<\/code>: pointer to the data which will be loaded into the output mailbox write buffer<\/li>\n\n\n\n<li><code>size<\/code>: size in bytes of the data to copy, must match the size declared during mailbox creation<\/li>\n<\/ul>\n\n\n\n<p><strong>Return value<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Returns <strong>1<\/strong> if the data has been loaded in the write buffer. Returns <strong>0<\/strong> otherwise.<\/li>\n<\/ul>\n<\/div><\/div><\/div>\n<\/div><\/div><\/div>\n\n\n\n<h4 class=\"wp-block-heading\">Legacy functions<\/h4>\n\n\n<style>.kt-accordion-id1665_9b0006-a7 .kt-accordion-inner-wrap{column-gap:var(--global-kb-gap-md, 2rem);row-gap:1px;}.kt-accordion-id1665_9b0006-a7 .kt-accordion-panel-inner{border-top:2px solid transparent;border-right:2px solid transparent;border-bottom:2px solid transparent;border-left:2px solid transparent;border-top-left-radius:2px;border-top-right-radius:2px;border-bottom-right-radius:2px;border-bottom-left-radius:2px;background:#ffffff;padding-top:20px;padding-right:20px;padding-bottom:20px;padding-left:20px;}.kt-accordion-id1665_9b0006-a7 > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header{border-top:2px solid #f2f2f2;border-right:2px solid #f2f2f2;border-bottom:2px solid #f2f2f2;border-left:2px solid #f2f2f2;border-top-left-radius:2px;border-top-right-radius:2px;border-bottom-right-radius:2px;border-bottom-left-radius:2px;background:#ffffff;font-size:16px;line-height:24px;letter-spacing:0px;font-weight:bold;text-transform:none;color:var(--global-palette3, #1A202C);padding-top:12px;padding-right:10px;padding-bottom:8px;padding-left:16px;}.kt-accordion-id1665_9b0006-a7:not( .kt-accodion-icon-style-basiccircle ):not( .kt-accodion-icon-style-xclosecircle ):not( .kt-accodion-icon-style-arrowcircle )  > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap .kt-blocks-accordion-icon-trigger:after, .kt-accordion-id1665_9b0006-a7:not( .kt-accodion-icon-style-basiccircle ):not( .kt-accodion-icon-style-xclosecircle ):not( .kt-accodion-icon-style-arrowcircle )  > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap .kt-blocks-accordion-icon-trigger:before{background:var(--global-palette3, #1A202C);}.kt-accordion-id1665_9b0006-a7:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-blocks-accordion-icon-trigger{background:var(--global-palette3, #1A202C);}.kt-accordion-id1665_9b0006-a7:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-blocks-accordion-icon-trigger:after, .kt-accordion-id1665_9b0006-a7:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-blocks-accordion-icon-trigger:before{background:#ffffff;}.kt-accordion-id1665_9b0006-a7 > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header:hover, \n\t\t\t\tbody:not(.hide-focus-outline) .kt-accordion-id1665_9b0006-a7 .kt-blocks-accordion-header:focus-visible{color:#444444;background:#ffffff;border-top:2px solid #eeeeee;border-right:2px solid #eeeeee;border-bottom:2px solid #eeeeee;border-left:2px solid #eeeeee;}.kt-accordion-id1665_9b0006-a7:not( .kt-accodion-icon-style-basiccircle ):not( .kt-accodion-icon-style-xclosecircle ):not( .kt-accodion-icon-style-arrowcircle ) .kt-accordion-header-wrap .kt-blocks-accordion-header:hover .kt-blocks-accordion-icon-trigger:after, .kt-accordion-id1665_9b0006-a7:not( .kt-accodion-icon-style-basiccircle ):not( .kt-accodion-icon-style-xclosecircle ):not( .kt-accodion-icon-style-arrowcircle ) .kt-accordion-header-wrap .kt-blocks-accordion-header:hover .kt-blocks-accordion-icon-trigger:before, body:not(.hide-focus-outline) .kt-accordion-id1665_9b0006-a7:not( .kt-accodion-icon-style-basiccircle ):not( .kt-accodion-icon-style-xclosecircle ):not( .kt-accodion-icon-style-arrowcircle ) .kt-blocks-accordion--visible .kt-blocks-accordion-icon-trigger:after, body:not(.hide-focus-outline) .kt-accordion-id1665_9b0006-a7:not( .kt-accodion-icon-style-basiccircle ):not( .kt-accodion-icon-style-xclosecircle ):not( .kt-accodion-icon-style-arrowcircle ) .kt-blocks-accordion-header:focus-visible .kt-blocks-accordion-icon-trigger:before{background:#444444;}.kt-accordion-id1665_9b0006-a7:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-accordion-header-wrap .kt-blocks-accordion-header:hover .kt-blocks-accordion-icon-trigger, body:not(.hide-focus-outline) .kt-accordion-id1665_9b0006-a7:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-accordion-header-wrap .kt-blocks-accordion-header:focus-visible .kt-blocks-accordion-icon-trigger{background:#444444;}.kt-accordion-id1665_9b0006-a7:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-accordion-header-wrap .kt-blocks-accordion-header:hover .kt-blocks-accordion-icon-trigger:after, .kt-accordion-id1665_9b0006-a7:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-accordion-header-wrap .kt-blocks-accordion-header:hover .kt-blocks-accordion-icon-trigger:before, body:not(.hide-focus-outline) .kt-accordion-id1665_9b0006-a7:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-accordion-header-wrap .kt-blocks-accordion-header:focus-visible .kt-blocks-accordion-icon-trigger:after, body:not(.hide-focus-outline) .kt-accordion-id1665_9b0006-a7:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-accordion-header-wrap .kt-blocks-accordion-header:focus-visible .kt-blocks-accordion-icon-trigger:before{background:#ffffff;}.kt-accordion-id1665_9b0006-a7 .kt-accordion-header-wrap .kt-blocks-accordion-header:focus-visible,\n\t\t\t\t.kt-accordion-id1665_9b0006-a7 > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header.kt-accordion-panel-active{color:var(--global-palette3, #1A202C);background:var(--global-palette9, #ffffff);border-top:2px solid var(--global-palette6, #718096);border-right:2px solid var(--global-palette6, #718096);border-bottom:2px solid var(--global-palette6, #718096);border-left:2px solid var(--global-palette6, #718096);}.kt-accordion-id1665_9b0006-a7:not( .kt-accodion-icon-style-basiccircle ):not( .kt-accodion-icon-style-xclosecircle ):not( .kt-accodion-icon-style-arrowcircle )  > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header.kt-accordion-panel-active .kt-blocks-accordion-icon-trigger:after, .kt-accordion-id1665_9b0006-a7:not( .kt-accodion-icon-style-basiccircle ):not( .kt-accodion-icon-style-xclosecircle ):not( .kt-accodion-icon-style-arrowcircle )  > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header.kt-accordion-panel-active .kt-blocks-accordion-icon-trigger:before{background:var(--global-palette3, #1A202C);}.kt-accordion-id1665_9b0006-a7:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-blocks-accordion-header.kt-accordion-panel-active .kt-blocks-accordion-icon-trigger{background:var(--global-palette3, #1A202C);}.kt-accordion-id1665_9b0006-a7:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-blocks-accordion-header.kt-accordion-panel-active .kt-blocks-accordion-icon-trigger:after, .kt-accordion-id1665_9b0006-a7:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-blocks-accordion-header.kt-accordion-panel-active .kt-blocks-accordion-icon-trigger:before{background:var(--global-palette9, #ffffff);}@media all and (max-width: 1024px){.kt-accordion-id1665_9b0006-a7 .kt-accordion-panel-inner{border-top:2px solid transparent;border-right:2px solid transparent;border-bottom:2px solid transparent;border-left:2px solid transparent;}}@media all and (max-width: 1024px){.kt-accordion-id1665_9b0006-a7 > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header{border-top:2px solid #f2f2f2;border-right:2px solid #f2f2f2;border-bottom:2px solid #f2f2f2;border-left:2px solid #f2f2f2;}}@media all and (max-width: 1024px){.kt-accordion-id1665_9b0006-a7 > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header:hover, \n\t\t\t\tbody:not(.hide-focus-outline) .kt-accordion-id1665_9b0006-a7 .kt-blocks-accordion-header:focus-visible{border-top:2px solid #eeeeee;border-right:2px solid #eeeeee;border-bottom:2px solid #eeeeee;border-left:2px solid #eeeeee;}}@media all and (max-width: 1024px){.kt-accordion-id1665_9b0006-a7 .kt-accordion-header-wrap .kt-blocks-accordion-header:focus-visible,\n\t\t\t\t.kt-accordion-id1665_9b0006-a7 > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header.kt-accordion-panel-active{border-top:2px solid var(--global-palette6, #718096);border-right:2px solid var(--global-palette6, #718096);border-bottom:2px solid var(--global-palette6, #718096);border-left:2px solid var(--global-palette6, #718096);}}@media all and (max-width: 767px){.kt-accordion-id1665_9b0006-a7 .kt-accordion-inner-wrap{display:block;}.kt-accordion-id1665_9b0006-a7 .kt-accordion-inner-wrap .kt-accordion-pane:not(:first-child){margin-top:1px;}.kt-accordion-id1665_9b0006-a7 .kt-accordion-panel-inner{border-top:2px solid transparent;border-right:2px solid transparent;border-bottom:2px solid transparent;border-left:2px solid transparent;}.kt-accordion-id1665_9b0006-a7 > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header{border-top:2px solid #f2f2f2;border-right:2px solid #f2f2f2;border-bottom:2px solid #f2f2f2;border-left:2px solid #f2f2f2;}.kt-accordion-id1665_9b0006-a7 > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header:hover, \n\t\t\t\tbody:not(.hide-focus-outline) .kt-accordion-id1665_9b0006-a7 .kt-blocks-accordion-header:focus-visible{border-top:2px solid #eeeeee;border-right:2px solid #eeeeee;border-bottom:2px solid #eeeeee;border-left:2px solid #eeeeee;}.kt-accordion-id1665_9b0006-a7 .kt-accordion-header-wrap .kt-blocks-accordion-header:focus-visible,\n\t\t\t\t.kt-accordion-id1665_9b0006-a7 > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header.kt-accordion-panel-active{border-top:2px solid var(--global-palette6, #718096);border-right:2px solid var(--global-palette6, #718096);border-bottom:2px solid var(--global-palette6, #718096);border-left:2px solid var(--global-palette6, #718096);}}<\/style>\n<div class=\"wp-block-kadence-accordion alignnone\"><div class=\"kt-accordion-wrap kt-accordion-id1665_9b0006-a7 kt-accordion-has-4-panes kt-active-pane-0 kt-accordion-block kt-pane-header-alignment-left kt-accodion-icon-style-arrow kt-accodion-icon-side-left\" style=\"max-width:none\"><div class=\"kt-accordion-inner-wrap\" data-allow-multiple-open=\"false\" data-start-open=\"none\">\n<div class=\"wp-block-kadence-pane kt-accordion-pane kt-accordion-pane-4 kt-pane1665_863c06-fe\"><div class=\"kt-accordion-header-wrap\"><button class=\"kt-blocks-accordion-header kt-acccordion-button-label-show\" type=\"button\"><span class=\"kt-blocks-accordion-title-wrap\"><span class=\"kt-blocks-accordion-title\"><code><code>Eth_Write<\/code> <\/code><strong>\u2014 Write<\/strong><\/span><\/span><span class=\"kt-blocks-accordion-icon-trigger\"><\/span><\/button><\/div><div class=\"kt-accordion-panel kt-accordion-panel-hidden\"><div class=\"kt-accordion-panel-inner\"><pre class=\"wp-block-code\" aria-describedby=\"shcb-language-3\" data-shcb-language-name=\"C++\" data-shcb-language-slug=\"cpp\"><span><code class=\"hljs language-cpp\"><span class=\"hljs-function\"><span class=\"hljs-keyword\">int<\/span> <span class=\"hljs-title\">Eth_Write<\/span><span class=\"hljs-params\">(<span class=\"hljs-keyword\">unsigned<\/span> <span class=\"hljs-keyword\">int<\/span> mailboxId, <span class=\"hljs-keyword\">unsigned<\/span> <span class=\"hljs-keyword\">int<\/span> dataLow)<\/span><\/span>;<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-3\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">C++<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">cpp<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-4\" data-shcb-language-name=\"C++\" data-shcb-language-slug=\"cpp\"><span><code class=\"hljs language-cpp\"><span class=\"hljs-function\"><span class=\"hljs-keyword\">int<\/span> <span class=\"hljs-title\">Eth_Write<\/span><span class=\"hljs-params\">(<span class=\"hljs-keyword\">unsigned<\/span> <span class=\"hljs-keyword\">int<\/span> mailboxId, <span class=\"hljs-keyword\">int<\/span> dataLow)<\/span><\/span>;<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-4\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">C++<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">cpp<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-5\" data-shcb-language-name=\"C++\" data-shcb-language-slug=\"cpp\"><span><code class=\"hljs language-cpp\"><span class=\"hljs-function\"><span class=\"hljs-keyword\">int<\/span> <span class=\"hljs-title\">Eth_Write<\/span><span class=\"hljs-params\">(<span class=\"hljs-keyword\">unsigned<\/span> <span class=\"hljs-keyword\">int<\/span> mailboxId, <span class=\"hljs-keyword\">float<\/span> dataLow)<\/span><\/span>;<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-5\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">C++<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">cpp<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<p>Sends a UDP message using the network parameters (IP and Port) defined by the provided <code>mailboxId<\/code>.<\/p>\n\n\n\n<p>Can only be called in the interrupt routine.<\/p>\n\n\n\n<p><strong>Parameters<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>maildboxId<\/code>: the mailbox unique identifier. This ID must be unique throughout all ETH and CAN input\/output mailboxes<\/li>\n\n\n\n<li><code>data<\/code>: data which will be loaded into the output mailbox write buffer<\/li>\n\n\n\n<li><code>size<\/code>: size in bytes of the data to copy, must match the size declared during mailbox creation<\/li>\n<\/ul>\n\n\n\n<p><strong>Return value<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Returns <strong>1<\/strong> if the data has been loaded in the write buffer. Returns <strong>0<\/strong> otherwise.<\/li>\n<\/ul>\n<\/div><\/div><\/div>\n<\/div><\/div><\/div>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The UDP output mailbox block allows sending up to 1024 bytes of data via Ethernet using the UDP\/IP protocol (in SDK versions prior to 2025.2,&#8230;<\/p>\n","protected":false},"author":7,"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":[50,31,32,92,166,51,110],"guidedreadings":[],"tutorials":[],"user-manuals":[],"coauthors":[71],"class_list":["post-1665","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-tpi"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Ethernet output mailbox - Simulink, PLECS and C++ documentation<\/title>\n<meta name=\"description\" content=\"The Ethernet output mailbox block (ETH) allows sending 32-bit values via Ethernet using the UDP\/IP protocol. 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