{"id":654,"date":"2010-09-04T06:26:19","date_gmt":"2010-09-04T13:26:19","guid":{"rendered":"http:\/\/www.serialporttool.com\/sptblog\/?p=654"},"modified":"2010-09-04T06:26:19","modified_gmt":"2010-09-04T13:26:19","slug":"how-to-use-comm-operator-as-a-loopback-connection","status":"publish","type":"post","link":"https:\/\/www.serialporttool.com\/GK\/2010\/09\/how-to-use-comm-operator-as-a-loopback-connection\/","title":{"rendered":"How to Use Comm Operator as Loopback Connection"},"content":{"rendered":"<p>Echo rule is added to \u201cAuto Send\u201d in Comm Operator. It can be used for loopback test.<\/p>\n<p>The loopback is the most popular method to test two-way communication in RS232 or network application. For RS232 application, the loopback can be very simple, just connection RX and TX pin together on remote end, it will echo all data back. For network application, it couldn\u2019t be that simple. Certain program has to be run on remote endpoint.\u00a0 Now it is possible to use Comm Operator as loopback for both RS232 and network application. You only need to add \u201cEcho Rule\u201d to Auto Send Rule.<\/p>\n<p><strong>How to Add \u201cEcho Rule\u201d<\/strong><\/p>\n<p>Click menu [Edit]-&gt;[Auto Send] to open the \u201cAuto Send Rule Setting\u201d dialog.<\/p>\n<p><a href=\"http:\/\/www.serialporttool.com\/sptblog\/wp-content\/uploads\/2010\/09\/image3.png\"><img loading=\"lazy\" decoding=\"async\" class=\"\" style=\"display: block; float: none; margin-left: auto; margin-right: auto; border-width: 0px;\" title=\"Auto Send Rule Setting\" src=\"http:\/\/www.serialporttool.com\/sptblog\/wp-content\/uploads\/2010\/09\/image_thumb3.png\" alt=\"Auto Send Rule Setting\" width=\"542\" height=\"314\" border=\"0\" \/><\/a><\/p>\n<p>Click \u201cNew\u201d button to show \u201cSelect Rule Type\u201d dialog.<\/p>\n<p><a href=\"http:\/\/www.serialporttool.com\/sptblog\/wp-content\/uploads\/2010\/09\/image5.png\"><img loading=\"lazy\" decoding=\"async\" style=\"display: inline; margin-left: 0px; margin-right: 0px; border-width: 0px;\" title=\"Select Rule Type\" src=\"http:\/\/www.serialporttool.com\/sptblog\/wp-content\/uploads\/2010\/09\/image_thumb4.png\" alt=\"Select Rule Type\" width=\"250\" height=\"369\" border=\"0\" \/><\/a><\/p>\n<p>Select \u201cEcho\u201d and Click \u201cOK\u201d. The \u201cEcho\u201d setting dialog will be shown.<\/p>\n<p><a href=\"http:\/\/www.serialporttool.com\/sptblog\/wp-content\/uploads\/2010\/09\/image6.png\"><img loading=\"lazy\" decoding=\"async\" class=\"\" style=\"display: inline; margin-left: 0px; margin-right: 0px; border-width: 0px;\" title=\"Echo Rule\" src=\"http:\/\/www.serialporttool.com\/sptblog\/wp-content\/uploads\/2010\/09\/image_thumb6.png\" alt=\"Echo Rule\" width=\"481\" height=\"174\" border=\"0\" \/><\/a><\/p>\n<p>Check the \u201cAlways\u201d will make it echo all the data back, otherwise, it only echo one received data.<\/p>\n<p>\u201cDelay\u201d is the delay time to echo data back. The unit is millisecond.<\/p>\n<p>Click OK and make the new auto send rule is valid.<\/p>\n<p><a href=\"http:\/\/www.serialporttool.com\/sptblog\/wp-content\/uploads\/2010\/09\/image7.png\"><img loading=\"lazy\" decoding=\"async\" style=\"display: block; float: none; margin-left: auto; margin-right: auto; border-width: 0px;\" title=\"Auto Send Rule Setting\" src=\"http:\/\/www.serialporttool.com\/sptblog\/wp-content\/uploads\/2010\/09\/image_thumb7.png\" alt=\"Auto Send Rule Setting\" width=\"656\" height=\"380\" border=\"0\" \/><\/a><\/p>\n<p>Click \u201cOK\u201d button and click \u201cStart\u201d button on toolbar will make the Comm Operator work in Echo mode.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Echo rule is added to \u201cAuto Send\u201d in Comm Operator. It can be used for loopback test. The loopback is the most popular method to test two-way communication in RS232 or network application. For RS232 application, the loopback can be [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6,3],"tags":[29,36,37],"class_list":["post-654","post","type-post","status-publish","format-standard","hentry","category-commop","category-news","tag-comm-operator","tag-loop-back","tag-test"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>How to Use Comm Operator as Loopback Connection - Serial Port Tool<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.serialporttool.com\/GK\/2010\/09\/how-to-use-comm-operator-as-a-loopback-connection\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to Use Comm Operator as Loopback Connection - Serial Port Tool\" \/>\n<meta property=\"og:description\" content=\"Echo rule is added to \u201cAuto Send\u201d in Comm Operator. It can be used for loopback test. The loopback is the most popular method to test two-way communication in RS232 or network application. 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