{"product_id":"allen-bradley-1785-v80b-vme-plc-5-programmable-controller-module","title":"Allen-Bradley 1785-V80B VME\/PLC-5 Programmable Controller Module","description":"\u003cp\u003eThe \u003cstrong\u003e1785-V80B\u003c\/strong\u003e is an Allen-Bradley PLC-5 processor module designed for VMEbus integration, combining traditional PLC-5 control execution with open VMEbus backplane architecture. Equipped with 100K words of SRAM user memory, it provides processing capability and multi-node network connectivity for complex, high-speed industrial control and data acquisition systems.\u003c\/p\u003e\n\u003ch3\u003eVMEbus Integration \u0026amp; Architecture\u003c\/h3\u003e\n\u003cp\u003eAs a VMEbus-compatible processor, the \u003cstrong\u003e1785-V80B\u003c\/strong\u003e mounts into standard VME chassis to facilitate high-speed data transfer across the VME backplane. It serves as either a VME system controller or standard VME board node, allowing direct memory mapping and peer-to-peer data interchange between PLC logic, VME single-board computers (SBCs), and specialized third-party co-processors.\u003c\/p\u003e\n\u003ch3\u003eMemory \u0026amp; Serial Communications\u003c\/h3\u003e\n\u003cp\u003eThe card features 100K words of battery-backed SRAM for user program logic, data tables, and system variables. Front-panel communication interfaces include an RS-232-C serial port configured for ASCII, DF1 point-to-point, or DF1 radio modem protocols, supporting programming terminals, operator interfaces, and SCADA connectivity.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e1785-V80B\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eProgrammable Logic Controllers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCore Controller Family\u003c\/td\u003e\n\u003ctd\u003eVME\/PLC-5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUser Memory\u003c\/td\u003e\n\u003ctd\u003e100K words SRAM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMemory Backup\u003c\/td\u003e\n\u003ctd\u003eInternal lithium battery\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Ports\u003c\/td\u003e\n\u003ctd\u003e1 x RS-232-C (DF1 \/ ASCII \/ DH-485)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBus Architecture\u003c\/td\u003e\n\u003ctd\u003eVMEbus (6U form factor)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e1.79 lbs (0.81 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStatus\u003c\/td\u003e\n\u003ctd\u003eDiscontinued by Manufacturer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eInstallation \u0026amp; Power Guidelines\u003c\/h3\u003e\n\u003cp\u003eBefore inserting or removing the processor from the VME enclosure, ensure that system rack power is fully de-energized to prevent edge connector arc damage. Verify that onboard VME backplane jumpers—such as system controller enable, interrupt request levels, and VME base address switches—are properly set before applying 5 VDC system power.\u003c\/p\u003e\n\u003cp\u003eFrequently Asked Questions\u003c\/p\u003e\n\u003cp\u003eQ: What bus architecture is the 1785-V80B processor designed for? A: The 1785-V80B is built specifically for 6U VMEbus chassis and backplanes, combining VME system access with Allen-Bradley PLC-5 execution logic.\u003c\/p\u003e\n\u003cp\u003eQ: How is user memory retained in the 1785-V80B when system power is disconnected? A: The module relies on an onboard lithium battery to preserve its 100K words of static RAM (SRAM) data and program memory during power-down cycles.\u003c\/p\u003e\n\u003cp\u003eQ: What protocols does the onboard RS-232-C serial port support? A: The RS-232-C channel supports DF1 full-duplex, DF1 half-duplex, DF1 radio modem, ASCII communication, and DH-485 protocol conversion for programming and operator interface access.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":67049520300147,"sku":"1785-V80B","price":88.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0644\/4348\/2227\/files\/1785-V80B.png?v=1793260141","url":"https:\/\/www.dcssupplier.com\/products\/allen-bradley-1785-v80b-vme-plc-5-programmable-controller-module","provider":"DcsSupplier Limited","version":"1.0","type":"link"}