{"product_id":"allen-bradley-1785-ke-plc-5-dh-rs-232-c-communication-interface-module","title":"Allen-Bradley 1785-KE PLC-5 DH+\/RS-232-C Communication Interface Module","description":"\u003cp\u003e\u003cstrong\u003eDescription \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Allen-Bradley 1785-KE is a communication interface module designed to bridge asynchronous RS-232-C devices with a Data Highway Plus (DH+) network. It enables industrial controllers and intelligent serial equipment to exchange data across distributed automation systems. This module is commonly used in PLC-5 installations where legacy devices must communicate reliably through a DH+ network infrastructure. Its robust design ensures dependable operation in demanding industrial communication environments.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTechnical Specifications \u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNew \/ Never Used Surplus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIndustrial Communication Modules\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1785-KE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSubcategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDH+ to RS-232-C Communication Interface\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSupported Networks\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eData Highway Plus (DH+), Asynchronous RS-232-C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDH+ Data Rate\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e57.6 kbps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRS-232-C Baud Rates\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSelectable from 110 to 19,200 baud\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSerial Mode\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFull-duplex or half-duplex\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRS-232 Connector\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e15-pin female D-shell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDH+ Connector\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3-terminal block for trunkline\/drop-line\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSwitch Assemblies\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSW1 (serial link options), SW2 (node address), SW3 (communication rate), SW4 (reserved)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMounting Style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1771 I\/O rack single-slot installation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBackplane Current Draw\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e~1.2 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax RS-232-C Cable Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to approx. 50 ft (device-dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTypical Applications\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSerial device integration, operator terminals, printers, data collection devices\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFunction\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCommunication bridging, protocol conversion, network integration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInformation About 1785-KE\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 1785-KE belongs to the Allen-Bradley PLC-5 communication module family and provides a dedicated interface between a DH+ network and an RS-232-C device. The module supports both full-duplex and half-duplex serial modes, allowing flexibility for various protocols and equipment types. It incorporates a 15-pin asynchronous serial connector for RS-232-C communication and a 3-terminal DH+ connection for network linking. On the DH+ network, the module operates at 57.6 kbps, while the serial port supports multiple baud rates selectable via onboard DIP switches. The 1785-KE includes four configurable switch assemblies for link mode, baud rate, node addressing, and communication behaviors. Designed to mount in a single slot of a 1771 I\/O chassis, it draws power directly from the backplane and integrates seamlessly with PLC-5 controllers. This module is often used to connect operator terminals, printers, barcode readers, modem-equipped devices, and other intelligent serial peripherals into a DH+ environment.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDH+ to RS-232-C Interface: Links intelligent asynchronous serial devices to DH+ networks.\u003c\/li\u003e\n\u003cli\u003eFull\/Half-Duplex Support: Accommodates a wide range of serial communication requirements.\u003c\/li\u003e\n\u003cli\u003eBaud Rate Selection: RS-232-C port supports multiple selectable data rates from 110 to 19,200 baud.\u003c\/li\u003e\n\u003cli\u003eDH+ Network Speed: Operates on the DH+ network at 57.6 kbps.\u003c\/li\u003e\n\u003cli\u003eRS-232-C Connector: 15-pin female D-shell port for serial communication.\u003c\/li\u003e\n\u003cli\u003eDH+ Terminals: 3-screw terminal block for trunkline or drop-line network connections.\u003c\/li\u003e\n\u003cli\u003eSwitch Assemblies: Four DIP switch banks for link configuration, node address, and baud rate selection.\u003c\/li\u003e\n\u003cli\u003eMounting: Installs in a single slot of the 1771 I\/O chassis.\u003c\/li\u003e\n\u003cli\u003eBackplane Power: Draws approximately 1.2 A from the I\/O rack backplane.\u003c\/li\u003e\n\u003cli\u003eDevice Compatibility: Supports printers, terminals, modems, operator interfaces, and intelligent serial devices.\u003c\/li\u003e\n\u003cli\u003eDistance Capability: Supports direct RS-232-C cable distances up to about 50 ft, depending on configuration.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe 1785-KE provides reliable and flexible communication bridging essential for PLC-5 networked automation systems.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":47315398328618,"sku":"1785-KE","price":2135.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/0392\/4266\/files\/1785-KE_5703ea9e-d647-448c-9ca6-84603fcb3c54.webp?v=1710514600","url":"https:\/\/iqelectro.com\/products\/allen-bradley-1785-ke-plc-5-dh-rs-232-c-communication-interface-module","provider":"IQElectro","version":"1.0","type":"link"}