{"id":2059,"date":"2025-04-15T05:04:50","date_gmt":"2025-04-15T05:04:50","guid":{"rendered":"https:\/\/webprojects.cloud\/wordpress\/splatco\/?post_type=spl_knowledgebase&#038;p=2059"},"modified":"2025-06-10T09:32:50","modified_gmt":"2025-06-10T09:32:50","slug":"mb485-wiring","status":"publish","type":"spl_knowledgebase","link":"https:\/\/webprojects.cloud\/wordpress\/splatco\/knowledgebase\/product-documentation\/product-documentation-rs485-adaptors\/mb485\/mb485-wiring\/","title":{"rendered":"MB485: Wiring"},"content":{"rendered":"\n<p>RS485 circuits contain 2 wires, A and B. The MB485 has screw terminals for A and B, plus one labelled 0V. The latter is connected to ground (0V) of the controller. If you are using screened cable (2 cores + shield), connect the shield to 0V.<\/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 MB485s or similar devices on one pair of wires.<\/p>\n\n\n\n\n","protected":false},"excerpt":{"rendered":"<p>RS485 circuits contain 2 wires, A and B. The MB485 has screw terminals for A and B, plus one labelled 0V. The latter is connected&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":2056,"menu_order":2,"template":"","class_list":["post-2059","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>MB485: 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=\"MB485: Wiring - SPLat Controls\" \/>\n<meta property=\"og:description\" content=\"RS485 circuits contain 2 wires, A and B. The MB485 has screw terminals for A and B, plus one labelled 0V. 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