{"product_id":"giddings-and-lewis-digital-io-board-502-03064-00-0226-509","title":"Giddings and Lewis Digital I\/O Board 502-03064-00 m00509","description":"\u003cp\u003eThis Giddings and Lewis Digital I\/O board, part number 502-03064-00 (assembly number 501-03855-00, dated 7\/83 RB), is a large-format dual-section digital input and output circuit board designed for use in Giddings and Lewis CNC machine control systems, including the G\u0026amp;L 8000 and 8000B NumeriPath control platforms. The 7\/83 RB date code identifies this as an early production revision of the 502-03064 series. The board features two independent I\/O sections, each populated with a full complement of screw-terminal terminal blocks, individually fused output circuits (FU1 series), red LED status indicators for each I\/O channel, jumper pin headers, and card-edge connectors for backplane interface. PCB silkscreen labeling identifies discrete numbered I\/O points across both sections, with INPUT and OUTPUT zones clearly marked, along with Board Section label areas and the Giddings and Lewis Electronics logo. Construction is through-hole on a green FR4 substrate with ICs, resistor networks, and discrete components throughout. This type of board provides discrete digital signal interfacing between machine field devices and the CNC control processor. The G\u0026amp;L 8000 control platform has reached end-of-life status per Fives, making original-revision spare boards increasingly difficult to source for facilities maintaining legacy Giddings and Lewis horizontal boring mills, vertical turning centers, and other G\u0026amp;L CNC equipment. No voltage rating or serial number was confirmed from the provided photos.\u003c\/p\u003e\n\n\u003cp\u003eStock # 0226-509\u003c\/p\u003e","brand":"Giddings and Lewis","offers":[{"title":"Default Title","offer_id":48856394334448,"sku":"m00509","price":499.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6648\/7280\/files\/3D7612BD-E3F5-4006-89F4-7AE146DC7D09.jpg?v=1771621330","url":"https:\/\/mroexchange.com\/products\/giddings-and-lewis-digital-io-board-502-03064-00-0226-509","provider":"MRO Exchange","version":"1.0","type":"link"}