{"id":2054,"date":"2025-04-15T05:03:15","date_gmt":"2025-04-15T05:03:15","guid":{"rendered":"https:\/\/webprojects.cloud\/wordpress\/splatco\/?post_type=spl_knowledgebase&#038;p=2054"},"modified":"2025-06-10T09:31:51","modified_gmt":"2025-06-10T09:31:51","slug":"pc485-rs485-wiring","status":"publish","type":"spl_knowledgebase","link":"https:\/\/webprojects.cloud\/wordpress\/splatco\/knowledgebase\/product-documentation\/product-documentation-rs485-adaptors\/pc485-rs232-to-rs485-adaptor\/pc485-rs485-wiring\/","title":{"rendered":"PC485: RS485 wiring"},"content":{"rendered":"\n<p>RS485 circuits contain 2 wires, A and B. The PC485 has screw terminals for A and B, plus one labelled G (for Gnd). If you are using screened cable (2 cores + shield), connect the shield to G.<\/p>\n\n\n\n<p>With an RS485 hookup all A terminals on all devices should be connected together and all B wires should be connected together. If you should swap A and B somewhere the system will not work. For long runs it pays to use shielded twisted pair cable. In that case the shield should connect to the 0V or Gnd terminal of each RS485 device.<\/p>\n\n\n\n<p>A system may contain up to 32 PC485s or similar devices on one pair of wires.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>RS485 circuits contain 2 wires, A and B. The PC485 has screw terminals for A and B, plus one labelled G (for Gnd). If you&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":2048,"menu_order":6,"template":"","class_list":["post-2054","spl_knowledgebase","type-spl_knowledgebase","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>PC485: RS485 wiring - SPLat Controls<\/title>\n<meta name=\"robots\" content=\"noindex, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"PC485: RS485 wiring - SPLat Controls\" \/>\n<meta property=\"og:description\" content=\"RS485 circuits contain 2 wires, A and B. The PC485 has screw terminals for A and B, plus one labelled G (for Gnd). If you...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/webprojects.cloud\/wordpress\/splatco\/knowledgebase\/product-documentation\/product-documentation-rs485-adaptors\/pc485-rs232-to-rs485-adaptor\/pc485-rs485-wiring\/\" \/>\n<meta property=\"og:site_name\" content=\"SPLat Controls\" \/>\n<meta property=\"article:modified_time\" content=\"2025-06-10T09:31:51+00:00\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/webprojects.cloud\/wordpress\/splatco\/knowledgebase\/product-documentation\/product-documentation-rs485-adaptors\/pc485-rs232-to-rs485-adaptor\/pc485-rs485-wiring\/\",\"url\":\"https:\/\/webprojects.cloud\/wordpress\/splatco\/knowledgebase\/product-documentation\/product-documentation-rs485-adaptors\/pc485-rs232-to-rs485-adaptor\/pc485-rs485-wiring\/\",\"name\":\"PC485: RS485 wiring - SPLat Controls\",\"isPartOf\":{\"@id\":\"https:\/\/webprojects.cloud\/wordpress\/splatco\/#website\"},\"datePublished\":\"2025-04-15T05:03:15+00:00\",\"dateModified\":\"2025-06-10T09:31:51+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/webprojects.cloud\/wordpress\/splatco\/knowledgebase\/product-documentation\/product-documentation-rs485-adaptors\/pc485-rs232-to-rs485-adaptor\/pc485-rs485-wiring\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/webprojects.cloud\/wordpress\/splatco\/knowledgebase\/product-documentation\/product-documentation-rs485-adaptors\/pc485-rs232-to-rs485-adaptor\/pc485-rs485-wiring\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/webprojects.cloud\/wordpress\/splatco\/knowledgebase\/product-documentation\/product-documentation-rs485-adaptors\/pc485-rs232-to-rs485-adaptor\/pc485-rs485-wiring\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/webprojects.cloud\/wordpress\/splatco\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Product documentation\",\"item\":\"https:\/\/webprojects.cloud\/wordpress\/splatco\/knowledgebase\/product-documentation\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Product documentation: RS485 adaptors\",\"item\":\"https:\/\/webprojects.cloud\/wordpress\/splatco\/knowledgebase\/product-documentation\/product-documentation-rs485-adaptors\/\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"PC485: RS232 to RS485 adaptor\",\"item\":\"https:\/\/webprojects.cloud\/wordpress\/splatco\/knowledgebase\/product-documentation\/product-documentation-rs485-adaptors\/pc485-rs232-to-rs485-adaptor\/\"},{\"@type\":\"ListItem\",\"position\":5,\"name\":\"PC485: RS485 wiring\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/webprojects.cloud\/wordpress\/splatco\/#website\",\"url\":\"https:\/\/webprojects.cloud\/wordpress\/splatco\/\",\"name\":\"SPLat Controls\",\"description\":\"OEM Embedded Machine Controllers\",\"publisher\":{\"@id\":\"https:\/\/webprojects.cloud\/wordpress\/splatco\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/webprojects.cloud\/wordpress\/splatco\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/webprojects.cloud\/wordpress\/splatco\/#organization\",\"name\":\"SPLat Controls\",\"url\":\"https:\/\/webprojects.cloud\/wordpress\/splatco\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/webprojects.cloud\/wordpress\/splatco\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/webprojects.cloud\/wordpress\/splatco\/wp-content\/uploads\/2024\/10\/logo.svg\",\"contentUrl\":\"https:\/\/webprojects.cloud\/wordpress\/splatco\/wp-content\/uploads\/2024\/10\/logo.svg\",\"caption\":\"SPLat Controls\"},\"image\":{\"@id\":\"https:\/\/webprojects.cloud\/wordpress\/splatco\/#\/schema\/logo\/image\/\"}}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"PC485: RS485 wiring - SPLat Controls","robots":{"index":"noindex","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"og_locale":"en_US","og_type":"article","og_title":"PC485: RS485 wiring - SPLat Controls","og_description":"RS485 circuits contain 2 wires, A and B. The PC485 has screw terminals for A and B, plus one labelled G (for Gnd). 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