{"product_id":"allen-bradley-1785-bcm","title":"1785-BCM","description":"\u003ch2\u003eOverview of Allen-Bradley 1785-BCM Backup Communication Module\u003c\/h2\u003e\n\u003cp\u003eThe Allen-Bradley 1785-BCM is a backup communication module designed for the PLC-5 controller platform. It provides communication redundancy and seamless switchover capabilities between a primary and standby PLC processor. The module supports high-speed Data Highway Plus (DH+) and Remote I\/O (RIO) communication via a high-speed serial link operating at speeds up to 1.2 Megabaud, ensuring reliable system performance during power failures, processor errors, or manual mode transitions.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features of 1785-BCM\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eSingle-slot module for installation in 1771 I\/O chassis.\u003c\/li\u003e\n  \u003cli\u003eHigh-speed serial link (HSSL) with 1.2 Megabaud communication rate.\u003c\/li\u003e\n  \u003cli\u003eTwo DH+\/RIO interfaces for network redundancy and rapid switchover.\u003c\/li\u003e\n  \u003cli\u003eInternal buffer capacity supports up to 4K words for efficient data management.\u003c\/li\u003e\n  \u003cli\u003eCompatible with PLC-5 processors: -5\/15 series B, -5\/20, -5\/25, -5\/30, -5\/40, and -5\/60.\u003c\/li\u003e\n  \u003cli\u003eConformal coating for protection in industrial environments.\u003c\/li\u003e\n  \u003cli\u003eDiagnosis\/status LEDs provide per-channel communication state indication.\u003c\/li\u003e\n  \u003cli\u003eRequires 1771-WG wiring arm for secure wire termination.\u003c\/li\u003e\n  \u003cli\u003eSuitable for local installation; I\/O modules must be installed remotely on DH+ or RIO networks.\u003c\/li\u003e\n  \u003cli\u003eOperating temperature range: 0 to 60 °C (32 to 140 °F).\u003c\/li\u003e\n  \u003cli\u003eDimensions: 4.5 x 12.4 x 6.3 inches (115 x 317 x 160 mm).\u003c\/li\u003e\n  \u003cli\u003eWeight: Approximately 0.3 lbs (0.1 kg).\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eBackup Communications Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Interfaces\u003c\/td\u003e\n\u003ctd\u003e1 High-Speed Serial Link (HSSL), 2 DH+\/RIO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Speed\u003c\/td\u003e\n\u003ctd\u003e1.2 Megabaud\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Processors\u003c\/td\u003e\n\u003ctd\u003ePLC-5\/15 series B, -5\/20, -5\/25, -5\/30, -5\/40, -5\/60\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current\u003c\/td\u003e\n\u003ctd\u003eApproximately 1.0 A @ 5 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExternal Power\u003c\/td\u003e\n\u003ctd\u003eNot required\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiagnostic LEDs\u003c\/td\u003e\n\u003ctd\u003e1 diagnosis\/status per channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Modules Per System\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoating\u003c\/td\u003e\n\u003ctd\u003eConformal coat\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTypical Signal Delay (AC Off)\u003c\/td\u003e\n\u003ctd\u003e29 ± 8 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTypical Signal Delay (DC Off)\u003c\/td\u003e\n\u003ctd\u003e30 ± 7 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e4.5 x 12.4 x 6.3 in (115 x 317 x 160 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e0 to 60 °C (32 to 140 °F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.3 lbs (0.1 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eApplications \/ Use Cases\u003c\/h2\u003e\n\u003cp\u003eThe 1785-BCM module is used in critical industrial control systems requiring high availability and redundancy. It supports seamless switchover between PLC-5 processors in manufacturing, process control, and other automation environments, ensuring minimal downtime and reliable data handling during faults or maintenance.\u003c\/p\u003e","brand":"Allen Bradley","offers":[{"title":"Default Title","offer_id":47809564279083,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0837\/4671\/7995\/files\/Leadtime_4f08653a-929b-4154-b382-c32725d9f466.png?v=1723546330","url":"https:\/\/leadtime.ca\/products\/allen-bradley-1785-bcm","provider":"LEADTIME","version":"1.0","type":"link"}