{"product_id":"rs232-to-rs485-serial-interface-converter-db9-adapter","title":"RS232 to RS485 Serial Interface Converter – DB9 Adapter","description":"\u003ch3\u003e\u003cspan\u003eRS232 to RS485 Serial Interface Converter – DB9 Adapter\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eThe \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eRS232 to RS485 Serial Interface Converter\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e is a compact communication adapter designed to connect RS232 serial devices to RS485 communication networks.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIt converts RS232 signals into RS485 differential signals, enabling reliable serial communication over longer distances. With support for transmission distances of up to \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e1200 meters\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e on the RS485 side and data rates up to \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e115.2 kbps\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, this converter is suitable for industrial automation, PLC communication, monitoring systems, and serial equipment integration.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe converter features a DB9 RS232 interface and an RS485 terminal connection. Its port-powered design eliminates the need for a separate external power supply under supported operating conditions.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eKey Features\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eRS232 to RS485 Conversion:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Connect RS232 serial equipment to RS485 communication networks.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eLong-Distance Communication:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Supports RS485 transmission distances of up to 1200 meters under suitable conditions.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eData Rates up to 115.2 kbps:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Suitable for industrial and general serial communication.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eHalf-Duplex Communication:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Supports bidirectional communication over a two-wire RS485 connection.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eAutomatic Direction Control:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Designed to manage RS485 transmit and receive direction automatically.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003ePort-Powered Design:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Draws operating power from the RS232 interface without a separate external power supply.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eDB9 Serial Interface:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Convenient connection to compatible RS232 devices.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eCompact Construction:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Suitable for installation in control panels and communication systems.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eIndustrial Applications:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Suitable for PLCs, monitoring equipment, industrial instruments, and serial devices.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eTechnical Specifications\u003c\/span\u003e\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cspan\u003eParameter\u003c\/span\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cspan\u003eSpecification\u003c\/span\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eProduct Type\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eRS232 to RS485 Serial Converter\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eRS232 Interface\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eDB9 Connector\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eRS485 Interface\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eTerminal Connection\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eCommunication Standard\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eRS232 \/ RS485\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eCommunication Mode\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eAsynchronous, Half-Duplex\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eMaximum Data Rate\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e115.2 kbps\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eSupported Baud Rate\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eUp to 115200 bps\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eRS232 Transmission Distance\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eUp to 5m\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eRS485 Transmission Distance\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eUp to 1200m\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eRS485 Signal Lines\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eD+ \/ A, D− \/ B\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eDirection Control\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eAutomatic\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003ePower Supply\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eRS232 Port-Powered\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eExternal Power Supply\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eNot Required under supported conditions\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eTransmission Cable\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eTwisted Pair \/ Shielded Cable\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eOperating Temperature\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e−20°C to +85°C\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eRelative Humidity\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e5%–95%\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cspan\u003eInterface and Connection\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eRS232 Side\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe converter uses a DB9 connector for connection to a compatible RS232 serial interface.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eRS485 Side\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cspan\u003eTerminal\u003c\/span\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cspan\u003eFunction\u003c\/span\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eD+ \/ A\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eRS485 Differential Signal\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eD− \/ B\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eRS485 Differential Signal\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eGND\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eSignal Ground, where provided\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eTypical Connection:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003e\u003cspan\u003eConnect the converter's DB9 connector to the RS232 port of the computer or industrial controller.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eConnect the RS485 A and B terminals to the corresponding terminals of the RS485 device.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eConfigure the same baud rate, parity, data bits, and stop bits on both communicating devices.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eUse suitable twisted-pair cabling for longer communication distances.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eInstall appropriate RS485 termination where required by the network design.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eExample Applications:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003ePC RS232 Port → RS485 PLC\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eIndustrial Controller → RS485 Sensor\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eRS232 Equipment → Modbus RTU Device\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSerial Computer Interface → RS485 Monitoring System\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eApplications\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eIndustrial Automation Systems\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePLC Serial Communication\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eModbus RTU Networks\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eRS485 Sensors and Instruments\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eIndustrial Monitoring Systems\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eData Acquisition Equipment\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eBuilding Automation\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSerial Communication Extensions\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eIndustrial Control Panels\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eLegacy Serial Equipment Integration\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eImportant Notes\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eThis converter is intended for RS232-to-RS485 communication and does not directly connect to TTL UART pins.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eArduino, ESP32, and Raspberry Pi GPIO UART connections require a suitable TTL-to-RS485 transceiver instead.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eThe RS485 interface supports half-duplex communication.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eThe maximum 1200m communication distance depends on cable quality, baud rate, termination, and electrical conditions.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFor long-distance communication, use suitable twisted-pair cable and appropriate termination resistors.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eRS485 A\/B naming conventions may differ between manufacturers. Verify the terminal polarity before connection.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePort-powered operation depends on the available RS232 signal levels and the connected equipment.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eRS232-to-RS485 conversion does not automatically convert communication protocols such as Modbus RTU into other protocols.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eElectrical isolation and surge protection are not specified for this converter.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003ePackage Includes\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e1 × RS232 to RS485 Serial Interface Converter\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!----\u003e","brand":"Robot Pi Shop","offers":[{"title":"Default Title","offer_id":40764312223877,"sku":"CM-000131-DVR","price":5.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0565\/5819\/0725\/files\/s-l1600-22-700x700.jpg?v=1767557402","url":"https:\/\/robotpishop.com\/products\/rs232-to-rs485-serial-interface-converter-db9-adapter","provider":"Robot Pi Shop","version":"1.0","type":"link"}