{"id":1985,"date":"2026-03-03T00:07:13","date_gmt":"2026-03-02T22:07:13","guid":{"rendered":"https:\/\/docklight.de\/dl_faq050\/"},"modified":"2026-03-03T00:07:17","modified_gmt":"2026-03-02T22:07:17","slug":"dl_faq050","status":"publish","type":"post","link":"https:\/\/docklight.de\/dl_faq050\/","title":{"rendered":"How can I simulate Modbus RTU master frames? \nHow can I detect Modbus RTU frames and evaluate or simulate Modbus slave telegrams?"},"content":{"rendered":"<p><em>Applies to: Docklight and Docklight Scripting (all versions), Article ID: dl_faq050<\/em><\/p>\n<p>Using the example project below, you can easily build a basic Modbus protocol simulator or analyzer and extend it to meet your<br \/>\nown requirements, e.g. sending or receiving a specific type of Modbus function. <\/p>\n<p>Docklight&#8217;s checksum generation and validation capabilities allow you to easily generate own Modbus RTU frames as well as detecting<br \/>\na valid Modbus RTU frame within a data stream.<\/p>\n<p><a href=\"https:\/\/docklight.de\/exampleFiles\/projects\/ModbusRtuCrc.zip\" target=\"_blank\">ModbusRtuCrc.zip &#8211; a documented example project for sending and receiving Modbus RTU telegrams<\/a><\/p>\n<p><a href=\"\" target=\"_blank\"><\/a><\/p>\n<p><a href=\"\" target=\"_blank\"><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Applies to: Docklight and Docklight Scripting (all versions), Article ID: dl_faq050 Using the example project below, you can easily build a basic Modbus protocol simulator or analyzer and extend it to meet your own requirements, e.g. sending or receiving a specific type of Modbus function. Docklight&#8217;s checksum generation and validation capabilities allow you to easily generate own Modbus RTU frames [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7,6],"tags":[101],"class_list":["post-1985","post","type-post","status-publish","format-standard","hentry","category-faq","category-support","tag-dl_faq050"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Docklight - How can I simulate Modbus RTU master frames? 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Docklight&#8217;s checksum generation and validation capabilities allow you to easily generate own Modbus RTU frames [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/docklight.de\/dl_faq050\/\" \/>\n<meta property=\"og:site_name\" content=\"Docklight\" \/>\n<meta property=\"article:published_time\" content=\"2026-03-02T22:07:13+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-03-02T22:07:17+00:00\" \/>\n<meta name=\"author\" content=\"Flachmann &amp; Heggelbacher\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Flachmann &amp; Heggelbacher\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/docklight.de\\\/dl_faq050\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/docklight.de\\\/dl_faq050\\\/\"},\"author\":{\"name\":\"Flachmann &amp; Heggelbacher\",\"@id\":\"https:\\\/\\\/docklight.de\\\/#\\\/schema\\\/person\\\/d6855d60ab4ee87f6482ab881c7151a3\"},\"headline\":\"How can I simulate Modbus RTU master frames? 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