{"product_id":"advantech-bb-4wsd9tb-rs232-422-485-serial-converter","title":"Advantech BB-4WSD9TB RS232 422 485 Serial Converter","description":"\u003cdiv\u003e\u003cp\u003eAdvantech BB-4WSD9TB is a port-powered RS-232 to RS-422\/RS-485 universal converter that translates a DB9 female RS-232 interface into RS-422 or RS-485 signals on a terminal-block output. It can be powered from the host via port-power or from an external 12 V DC supply through a power jack, offering flexible installation in equipment racks or enclosures. The device employs Automatic Send Data Control to manage RS-485 transmission automatically, enabling the transmitter from the RS-232 TD signal and, in 2-wire RS-485 half-duplex mode, enabling the receiver when not transmitting; in 4-wire RS-422\/RS-485 full-duplex mode, the receiver remains enabled. A set of DIP switches selects the operating mode—RS-485 2-wire half-duplex, RS-485 4-wire full-duplex, or RS-422—with additional switches for Echo On\/Echo Off to control the receive path behavior in 4-wire configurations. The BB-4WSD9TB is part of Advantech’s ULI-224 family of inline converters and ships in a compact enclosure measuring about 9.0 cm by 4.3 cm by 2.3 cm, designed for easy panel or chassis mounting. On the RS-232 side you’ll find a DB9 female connector, while the RS-422\/RS-485 side uses a terminal-block connection suitable for 2-wire or 4-wire wiring, depending on the mode selected. The model name BB-4WSD9TB specifies a DB9F RS-232 to RS-422\/RS-485 TB converter configuration, and the unit supports operation with either port power or an external supply, making it a versatile bridge between legacy serial devices and multi-drop serial networks. \u003c\/p\u003e\u003c\/div\u003e","brand":"Advantech","offers":[{"title":"New","offer_id":51657039970606,"sku":null,"price":149.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/Ebay_website_image_17e8bb38-f055-4f74-b278-e614dc483982.jpg?v=1769465459","url":"https:\/\/plgautomation.com\/products\/advantech-bb-4wsd9tb-rs232-422-485-serial-converter","provider":"PLG Automation ","version":"1.0","type":"link"}