{"id":497940,"date":"2024-11-05T13:07:03","date_gmt":"2024-11-05T13:07:03","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/as-60870-5-21998-r2015\/"},"modified":"2024-11-05T13:07:03","modified_gmt":"2024-11-05T13:07:03","slug":"as-60870-5-21998-r2015","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/as\/as-60870-5-21998-r2015\/","title":{"rendered":"AS 60870.5.2:1998 (R2015)"},"content":{"rendered":"<p>Defines link procedures which are restricted to message transmission sequences operating with size 1 windows. It is one of a series of Standards applicable to telecontrol equipment systems. This Standard is identical with and has been reproduced from IEC 60870-5-2:1992.  <\/p>\n<p><b>Scope<\/b><\/p>\n<p> This section of IEC 870-5 applies to telecontrol equipment and systems with coded bit serial data transmission for monitoring and controlling geographically widespread processes. <\/p>\n<p> The defined link procedures are restricted to message transmission sequences operating with size 1 windows. This means that the link layer of the primary station (station that initiates a message transfer) accepts a request for a new message transfer only when a previously accepted request for a message transfer is terminated either successfully or with an error indication. The procedures are applicable to balanced and unbalanced transmission in telecontrol systems using half duplex or duplex transmission channels.<\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>Telecontrol equipment and systems &#8211; Transmission protocols &#8211; Link transmission procedures<\/b><\/p>\n<table style=\"width: 100%\" border=\"0\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td>Published By<\/td>\n<td>Publication Date<\/td>\n<td>Number of Pages<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/pdfstandards.shop\/product-category\/publishers\/as\/\"><b>AS<\/b><\/a><\/td>\n<td>1998-04-05<\/td>\n<td>57<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":497952,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[653,2633],"product_tag":[],"class_list":{"0":"post-497940","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-33-200","7":"product_cat-as","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/497940","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/497952"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=497940"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=497940"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=497940"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}