{"id":1960,"date":"2025-12-17T15:33:32","date_gmt":"2025-12-17T07:33:32","guid":{"rendered":"https:\/\/ksxiqian.cn\/?p=1960"},"modified":"2026-06-05T15:08:54","modified_gmt":"2026-06-05T07:08:54","slug":"supply-siemens-plc-module-6es7521-1fh00-0aa0-s7-1500-siemens-expansion-module","status":"publish","type":"post","link":"https:\/\/ksxiqian.cn\/?p=1960","title":{"rendered":"Supply Original Siemens 6ES7521-1FH00-0AA0 SM521 16DI 120VAC Digital Input Expansion Module For S7-1500 PLC"},"content":{"rendered":"\n<p class=\"has-medium-font-size wp-block-paragraph\">We supply original sealed Siemens SM521 6ES7521-1FH00-0AA0 digital input module for SIMATIC S7-1500 PLC system. <strong>Core Spec<\/strong>:16 channels AC input(120~264VAC,47~63Hz),divided into 4 channels per group,standard input delay 20ms,screw terminal front connector(front connector sold separately). Built-in optoelectronic isolation(1500V AC isolation between field and backplane bus),support channel fault diagnosis for open circuit &amp; short circuit,LED fault indication,IP20 protection,35mm DIN rail backplane installation. Perfect for collecting AC field switch signals in power plant,water treatment and heavy industry equipment.12-month factory warranty,sufficient inventory for bulk order &amp; global shipment.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>We supply original sealed Siemens SM521 &hellip;<\/p>\n","protected":false},"author":1,"featured_media":1819,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[26],"tags":[],"class_list":["post-1960","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-s7-1500"],"acf":[],"_links":{"self":[{"href":"https:\/\/ksxiqian.cn\/index.php?rest_route=\/wp\/v2\/posts\/1960","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ksxiqian.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ksxiqian.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ksxiqian.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ksxiqian.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1960"}],"version-history":[{"count":2,"href":"https:\/\/ksxiqian.cn\/index.php?rest_route=\/wp\/v2\/posts\/1960\/revisions"}],"predecessor-version":[{"id":9098,"href":"https:\/\/ksxiqian.cn\/index.php?rest_route=\/wp\/v2\/posts\/1960\/revisions\/9098"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ksxiqian.cn\/index.php?rest_route=\/wp\/v2\/media\/1819"}],"wp:attachment":[{"href":"https:\/\/ksxiqian.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1960"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ksxiqian.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1960"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ksxiqian.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1960"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}