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FanucSeries 0i
SV0447 — Alarm SV0447 (HARD DISCONNECT(EXT)) Diagnostic Tree
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Check the AL2 or AL3 bits in the diagnostic data; if bit 1 (CRF) of parameter No. 1819 is set to 1, check the separate position detector (external detector) connections for any hardware disconnection or broken wires, and fix any cable/connector issues.
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