{"product_id":"ge-a20b-2900-0442-02a-control-daughter-boards","title":"GE A20B-2900-0442\/02A Control Daughter Boards","description":"\u003cp\u003eThe \u003cstrong\u003eGE A20B-2900-0442\/02A\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eA20B-2900-0442\u003c\/strong\u003e Daughter Board, operates as a dedicated hardware component for auxiliary logic processing and parallel bus data routing within GE Fanuc CNC system platforms.\u003c\/p\u003e\n\u003ch3\u003eHardware 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\u003eA20B-2900-0442\/02A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eGE Fanuc Automation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eStandard Manufacturing Facility\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.18 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e16 cm x 10 cm x 1.8 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003eNot Specified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eReceives 5 VDC and 12 VDC from main board\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterface Type\u003c\/td\u003e\n\u003ctd\u003eParallel bus (2 x 50-pin stacking headers)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eComponent Count\u003c\/td\u003e\n\u003ctd\u003e8 custom ASICs, 32 ceramic capacitors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMemory ICs\u003c\/td\u003e\n\u003ctd\u003e2 x 32 KB SRAM chips\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnergy Storage\u003c\/td\u003e\n\u003ctd\u003eDecoupling capacitors only (no battery)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eBackplane Bus Communication and Firmware Flash Compatibility\u003c\/h3\u003e\n\u003cp\u003eThe daughterboard connects vertically to the primary CPU card via dual 50-pin stacking headers, maintaining deterministic high-speed parallel bus communication with the main processor. The four-layer printed circuit board construction handles high-frequency bus signals while suppressing cross-talk, ensuring stable firmware execution and interface compatibility across controller generations without requiring independent local non-volatile flash storage.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does the A20B-2900-0442\/02A retain user programs or machine parameters when power is removed?\u003c\/p\u003e\n\u003cp\u003eA: No, the board contains no onboard battery backup and relies solely on volatile SRAM chips (2 x 32 KB) supported by system-level power architecture.\u003c\/p\u003e\n\u003cp\u003eQ: Can this auxiliary control card be hot-swapped while the CNC main rack is energized?\u003c\/p\u003e\n\u003cp\u003eA: No, system power must be completely de-energized prior to inserting or removing the daughterboard to protect custom ASIC logic and 50-pin edge connectors from transient electrical damage.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eEnsure main controller cabinet power is fully switched off before handling the board. Observe standard electrostatic discharge (ESD) precautions, including the use of a grounded wrist strap. Align the gold-plated contact fingers vertically with the designated 50-pin stacking connectors on the main CPU board and press downward evenly until fully seated. Verify mechanical stability before restoring system power.\u003c\/p\u003e","brand":"GE","offers":[{"title":"Default Title","offer_id":66852963549299,"sku":"A20B-2900-0442\/02A","price":88.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0644\/4348\/2227\/files\/A20B-2900-0442.png?v=1791879741","url":"https:\/\/www.dcssupplier.com\/products\/ge-a20b-2900-0442-02a-control-daughter-boards","provider":"DcsSupplier Limited","version":"1.0","type":"link"}