{"id":13138,"date":"2025-06-16T13:22:40","date_gmt":"2025-06-16T12:22:40","guid":{"rendered":"https:\/\/selfbits.de\/uncategorized\/modbus\/"},"modified":"2025-06-26T12:43:25","modified_gmt":"2025-06-26T11:43:25","slug":"modbus","status":"publish","type":"post","link":"https:\/\/selfbits.de\/en\/learn\/digital-production-i40\/modbus\/","title":{"rendered":"ModBus"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"13138\" class=\"elementor elementor-13138 elementor-12728\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-32cbeae2 e-flex e-con-boxed e-con e-parent\" data-id=\"32cbeae2\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-6798e800 e-con-full e-flex e-con e-child\" data-id=\"6798e800\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-3c67674c e-con-full e-flex e-con e-child\" data-id=\"3c67674c\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-12b8bd96 elementor-widget elementor-widget-breadcrumbs\" data-id=\"12b8bd96\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"breadcrumbs.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<p id=\"breadcrumbs\"><span><span><a href=\"https:\/\/selfbits.de\/en\/\">Startseite<\/a><\/span><\/span><\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1cd01c91 elementor-widget elementor-widget-theme-post-title elementor-page-title elementor-widget-heading\" data-id=\"1cd01c91\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"theme-post-title.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">ModBus<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-31bb6604 elementor-widget elementor-widget-text-editor\" data-id=\"31bb6604\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tThe article provides a concise overview of the origins, functionality, and areas of application of the classic Modbus protocol.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-5bc2b9ee e-con-full e-flex e-con e-child\" data-id=\"5bc2b9ee\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-72c9bcd0 elementor-widget elementor-widget-image\" data-id=\"72c9bcd0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"1536\" height=\"1024\" src=\"https:\/\/selfbits.de\/wp-content\/uploads\/2025\/06\/modbus-grafik.webp\" class=\"attachment-full size-full wp-image-12737\" alt=\"\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6b9b49b1 elementor-widget elementor-widget-text-editor\" data-id=\"6b9b49b1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Image: Sample illustration<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-222eac64 e-con-full e-flex e-con e-child\" data-id=\"222eac64\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-56cd9e04 elementor-widget elementor-widget-heading\" data-id=\"56cd9e04\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">What is ModBus?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-769876ea e-con-full e-flex e-con e-child\" data-id=\"769876ea\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-15ee145 elementor-widget elementor-widget-text-editor\" data-id=\"15ee145\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-b2258b6 elementor-widget elementor-widget-text-editor\" data-id=\"b2258b6\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\"><div class=\"elementor-widget-container\"><div class=\"flex flex-grow flex-col gap-3\"><div class=\"min-h-[20px] flex flex-col items-start gap-4 whitespace-pre-wrap\"><div class=\"markdown prose w-full break-words dark:prose-invert light\"><p>Modbus is a communication protocol used for the transmission of data in industrial automation systems. It was developed in 1979 and is one of the oldest and most widely used protocols for industrial automation. Modbus enables devices to exchange data and communicate with each other. <\/p><p>Modbus is used in various applications, including process control systems, temperature controllers, measuring instruments, and other devices used in industrial automation. It is easy to implement and provides good compatibility between different devices, regardless of their manufacturer. <\/p><\/div><p>Modbus has been the de facto standard for open protocols in the automation industry. However, in recent years, <a href=\"https:\/\/selfbits.de\/en\/learn\/digital-production-i40\/what-is-opc-ua\/\">OPC UA<\/a> has become the preferred choice. <\/p><\/div><\/div><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-6e49cc9 e-con-full e-flex e-con e-child\" data-id=\"6e49cc9\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-8600251 elementor-widget elementor-widget-heading\" data-id=\"8600251\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Dissemination<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-724f0198 e-con-full e-flex e-con e-child\" data-id=\"724f0198\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-38c26b11 elementor-widget elementor-widget-text-editor\" data-id=\"38c26b11\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-0c6cdb0 elementor-widget elementor-widget-text-editor\" data-id=\"0c6cdb0\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\"><div class=\"elementor-widget-container\"><p>Due to the openness of the protocol, it has been adopted in various application scenarios in recent years. These include: <\/p><ol><li><p>Process control systems: MODBUS is often used to exchange data between process control systems and other devices. This can include data such as process parameters, alarms, and other important information. <\/p><\/li><li><p>Measurement devices: MODBUS is frequently employed to exchange data between measurement devices and other equipment. This can involve data like voltage, current, power, and other electrical quantities. <\/p><\/li><li><p>Drive systems: MODBUS is commonly used to exchange data between drive systems and other devices. This can include data such as speed, torque, and other important drive parameters. <\/p><\/li><li><p>Sensors: MODBUS is often utilized to exchange data between sensors and other devices. This may encompass data such as pressure, acceleration, and other critical sensor parameters. <\/p><\/li><\/ol><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-c5464b8 e-con-full e-flex e-con e-child\" data-id=\"c5464b8\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-34e3a06 elementor-widget elementor-widget-heading\" data-id=\"34e3a06\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Interfaces and Operating Modes<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-3565add e-con-full e-flex e-con e-child\" data-id=\"3565add\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3ad9107 elementor-widget elementor-widget-text-editor\" data-id=\"3ad9107\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-dfaba13 elementor-widget elementor-widget-text-editor\" data-id=\"dfaba13\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\"><div class=\"elementor-widget-container\"><p>MODBUS can be operated either with older serial interfaces like RS-232 and RS-485 or via Ethernet.<\/p><p>There are different operating modes available:<\/p><ul><li>MODBUS\/RTU: binary data transmission <\/li><li>MODBUS\/ASCII: transmission in ASCII format, theoretically human-readable<\/li><li>MODBUS\/TCP: similar to RTU, but Transmission Control Protocol (TCP) is used for transmission. TCP port 502 is reserved for MODBUS. Modbus\/TCP can also utilize Transport Layer Security (TLS) for secure data transmission since 2018, using TCP port 802 for this purpose.   <\/li><\/ul><\/div><\/div><div class=\"elementor-element elementor-element-ab4e7cb elementor-widget elementor-widget-text-editor\" data-id=\"ab4e7cb\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\"><div class=\"elementor-widget-container\"><p>More details on the implementation of the standard can be found in the <a href=\"https:\/\/www.modbus.org\/specs.php\">documentation<\/a>.<\/p><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ef94c10 elementor-widget elementor-widget-image\" data-id=\"ef94c10\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"800\" height=\"600\" src=\"https:\/\/selfbits.de\/wp-content\/uploads\/2023\/02\/2592395272_276e310934_c-jpg.webp\" class=\"attachment-large size-large wp-image-8517\" alt=\"rs 232\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">RS 232<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-bce39be e-con-full e-flex e-con e-child\" data-id=\"bce39be\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-9814cef elementor-widget elementor-widget-heading\" data-id=\"9814cef\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Usage for machine data acquisition<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-c604308 e-con-full e-flex e-con e-child\" data-id=\"c604308\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-40c2e95 elementor-widget elementor-widget-text-editor\" data-id=\"40c2e95\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-c25c276 elementor-widget elementor-widget-text-editor\" data-id=\"c25c276\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\"><div class=\"elementor-widget-container\"><div class=\"flex flex-grow flex-col gap-3\"><div class=\"min-h-[20px] flex flex-col items-start gap-4 whitespace-pre-wrap\"><div class=\"markdown prose w-full break-words dark:prose-invert light\"><p>Machines with a MODBUS interface can be connected to an IoT platform or a Manufacturing Execution System (<a href=\"https:\/\/selfbits.de\/en\/learn\/digital-production-i40\/what-is-an-mes-system\/\">MES<\/a>) using a MODBUS-compatible driver that enables communication between the machine and the MES. The following steps can help in this process: <\/p><ol><li><p>Connecting the machine to the network: The machine needs to be connected to the MES system via an Ethernet cable or another type of network connection.<\/p><\/li><li><p>Configuring the MODBUS driver: The MODBUS driver must be installed and configured on the MES system. This involves setting relevant parameters such as the IP address, port number, and other configuration details. <\/p><\/li><li><p>Configuring the MODBUS interface on the machine: The MODBUS interface on the machine also needs to be configured. This includes setting relevant parameters such as the IP address, port number, and other configuration details. <\/p><\/li><li><p>Checking the connection: Once the configuration is complete, the connection between the machine and the MES can be verified by exchanging data between the two systems.<\/p><\/li><li><p>Integrating the data into the MES: Once the connection is established, the data from the machine can be integrated into the MES. Specific applications or tools can be used to translate the data into a readable format and integrate it into the MES. <\/p><\/li><\/ol><p>The necessary integration effort may vary depending on the system and MODBUS interface on the machine. However, the documentation and instructions provided by the respective manufacturer can provide initial guidance on the functionality and effort required for integration into a higher-level system.  <\/p><\/div><\/div><\/div><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Modbus is an open industrial communication protocol from 1979 that easily connects devices such as sensors, drives, and control systems.<\/p>\n","protected":false},"author":16,"featured_media":12737,"comment_status":"closed","ping_status":"open","sticky":false,"template":"elementor_header_footer","format":"standard","meta":{"content-type":"","_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[33,30],"tags":[],"class_list":["post-13138","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-digital-production-i40","category-learn"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - 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