{"product_id":"giddings-and-lewis-processor-module-501-03865-01-0226-417","title":"Giddings and Lewis Processor Module 501-03865-01","description":"\u003cp\u003eUsed in Giddings and Lewis CNC machining centers and horizontal boring mills, the Processor Module with part number 501-03865-01 and assembly number 502-03061 is a full-size backplane-mounted circuit board assembly designed for the G\u0026amp;L 8000-series and related CNC control systems. The board is populated with TTL logic ICs including 74LS-series gates, 26LS30 and 26LS32 line drivers and receivers, MC68661 and MC6861 communication ICs, and a 8288 bus controller. PCB silkscreen identifies termination selection jumpers for TX, RTS, and DTR signals, indicating RS-232 serial communication interface functionality integral to the processor function. The board carries a gold-finger edge connector along both sides for direct backplane installation into the G\u0026amp;L control chassis. Two units are available, both carrying the same part number 501-03865-01 and the same assembly designation 502-03061. One unit carries serial reference 078001 and the other 305000 as visible on the board edge. Construction is through-hole on a multilayer fiberglass PCB with gold-plated edge connectors. The Giddings and Lewis 8000-series control platform was used extensively in large-format horizontal boring mills, vertical turning centers, and flexible machining systems produced during the 1980s and early 1990s.\u003c\/p\u003e\n\n\u003cp\u003eStock # 0226-417\u003c\/p\u003e","brand":"Giddings and Lewis","offers":[{"title":"Default Title","offer_id":48835251601648,"sku":"m00417","price":179.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6648\/7280\/files\/23A9E3F5-EEA3-4511-9D47-6B184B64ABC9.jpg?v=1771340523","url":"https:\/\/mroexchange.com\/products\/giddings-and-lewis-processor-module-501-03865-01-0226-417","provider":"MRO Exchange","version":"1.0","type":"link"}