{"id":412,"date":"2012-10-10T04:47:11","date_gmt":"2012-10-10T04:47:11","guid":{"rendered":"http:\/\/instrumentacionycontrol.net\/?p=412"},"modified":"2020-06-11T14:03:44","modified_gmt":"2020-06-11T19:03:44","slug":"plcs-programming-comparison-operation","status":"publish","type":"post","link":"https:\/\/instrumentacionycontrol.net\/en\/programacion-de-plcs-operacion-de-comparacion\/","title":{"rendered":"PLC Programming: Comparison Operation"},"content":{"rendered":"<p class=\"wp-block-paragraph\">These operations allow you to compare two variables or a variable with a numerical value. All these operations are conditional; that is, when the comparison condition is met, a binary signal will be activated. In some cases, the first variable must be a true variable, while the second can be either a variable or a constant.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The possible comparison operations are:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u2022Equality.<br>\u2022Inequality.<br>\u2022Less than.<br>\u2022Less than or equal to.<br>\u2022Greater than.<br>\u2022Greater than or equal to.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The representation in the IEC 61131-3 standard is represented as follows:<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"648\" height=\"72\" src=\"http:\/\/instrumentacionycontrol.net\/wp-content\/uploads\/2017\/10\/L6.jpg\" alt=\"\" class=\"wp-image-422\" srcset=\"https:\/\/instrumentacionycontrol.net\/wp-content\/uploads\/2017\/10\/L6.jpg 648w, https:\/\/instrumentacionycontrol.net\/wp-content\/uploads\/2017\/10\/L6-300x33.jpg 300w\" sizes=\"auto, (max-width: 648px) 100vw, 648px\" \/><\/figure><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Input operands can be of type BYTE, WORD, DWORD, INT, DINT, or REAL. The output operand will always be a variable of type BOOL.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Table 2 below shows the comparison operations used for the PLCs: Simatic, Telemecanique, and Allen Bradley.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"531\" height=\"554\" src=\"http:\/\/instrumentacionycontrol.net\/wp-content\/uploads\/2017\/10\/L8.jpg\" alt=\"\" class=\"wp-image-423\" srcset=\"https:\/\/instrumentacionycontrol.net\/wp-content\/uploads\/2017\/10\/L8.jpg 531w, https:\/\/instrumentacionycontrol.net\/wp-content\/uploads\/2017\/10\/L8-288x300.jpg 288w\" sizes=\"auto, (max-width: 531px) 100vw, 531px\" \/><\/figure><\/div>\n\n\n\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<h2 class=\"wp-block-heading\">Help us grow <\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Finally, if you are determined to learn Industrial Automation and advance your professional career, you may be interested in our Premium courses:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u2013 Click to see all our courses at <a rel=\"noreferrer noopener\" href=\"https:\/\/myautomationclass.com\/?utm_source=iycnet&amp;utm_medium=post&amp;utm_campaign=footer_link_post\" target=\"_blank\">MyAutomationClass.com <\/a><br>- Course: <a rel=\"noreferrer noopener\" href=\"https:\/\/myautomationclass.com\/p\/aprende-plcs-desde-cero-con-rslogix500-basico-avanzado?utm_source=iycnet&amp;utm_medium=post&amp;utm_campaign=footer_link_post\" target=\"_blank\">\u00ab&quot;Become a PLC expert in 60 days, from basic to pro&quot;\u00bb <\/a><br>- Course: <a rel=\"noreferrer noopener\" href=\"https:\/\/myautomationclass.com\/p\/aprende-controladores-pid-de-manera-practica?utm_source=iycnet&amp;utm_medium=post&amp;utm_campaign=footer_link_post\" target=\"_blank\">\u00ab&quot;PID Controllers Master Class \u2013 100% practical&quot;\u00bb <\/a><br>- Course:<a rel=\"noreferrer noopener\" href=\"https:\/\/myautomationclass.com\/p\/desarrollo-de-proyectos-scadahmi-con-wonderware-intouch?utm_source=iycnet&amp;utm_medium=post&amp;utm_campaign=footer_link_post\" target=\"_blank\"> \u00ab&quot;How to create SCADA\/HMI projects from scratch with InTouch&quot;\u00bb <\/a><br>- Course:<a rel=\"noreferrer noopener\" href=\"https:\/\/myautomationclass.com\/p\/pid-tuning-ultimate-sintonizacion?utm_source=iycnet&amp;utm_medium=post&amp;utm_campaign=footer_link_post\" target=\"_blank\"> \u00ab&quot;PID Tuning Ultimate: The Definitive Course for Tuning&quot;\u00bb <\/a><br>- Course:<a rel=\"noreferrer noopener\" href=\"https:\/\/myautomationclass.com\/p\/modelamiento-practico-de-procesos-10-pasos-impresindibles-para-ser-un-experto?utm_source=iycnet&amp;utm_medium=post&amp;utm_campaign=footer_link_post\" target=\"_blank\"> \u00ab&quot;Practical Process Modeling: Definitive Steps to Becoming an Expert&quot;\u00bb <\/a><br>- Program:<a rel=\"noreferrer noopener\" href=\"https:\/\/myautomationclass.com\/p\/the-ultimate-process-control-training-se-un-maestro-control-pid?utm_source=iycnet&amp;utm_medium=post&amp;utm_campaign=footer_link_post\" target=\"_blank\"> \u00ab&quot;The Ultimate Process Control Formula&quot; (All-inclusive: PID Control, Tuning, and Modeling)<\/a> <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">- Course: <a href=\"https:\/\/myautomationclass.com\/p\/aprende-instrumentacion-industrial-facil\" target=\"_blank\" rel=\"noreferrer noopener\">How to Learn Industrial Instrumentation, Easily (Complete)<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If you have any questions, contact us via <a rel=\"noreferrer noopener\" href=\"http:\/\/m.me\/instrumentacionycontrol.net\" target=\"_blank\">Facebook Messenger<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Until next time. COMMENT AND SHARE! I&#039;ll be happy to answer your questions.<\/p>\n<\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>Estas operaciones permiten comparar dos variables o una variable con un valor num\u00e9rico. Todas estas operaciones son condicionales, es decir, cuando se cumple la relaci\u00f3n de comparaci\u00f3n, se activar\u00e1 una se\u00f1al del tipo binaria. En algunos casos es necesario que la primera variable sea netamente variable, mientras que la segunda puede ser variable o constante. [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":419,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[73],"tags":[425,838,21403,777],"class_list":["post-412","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-curso-avanzado-plcs","tag-comparacion","tag-operacion","tag-plcs-2","tag-programacion","post-wrapper","thrv_wrapper"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Programacion de PLC&#039;s: Operacion de Comparacion<\/title>\n<meta name=\"description\" content=\"Estas operaciones permiten comparar dos variables o una variable con un valor num\u00e9rico. Todas estas operaciones son condicionales, es decir, cuando se cumple la relaci\u00f3n de comparaci\u00f3n, se activar\u00e1 una se\u00f1al del tipo binaria. 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