64-Channel, ±30 VDC, 32 Sink/Source Inputs, 32 Sink Outputs, Bank-Isolated PXI Digital I/O Module—The PXI‑6515 is an industrial digital I/O interface with eight banks of isolated channels. You can wire each input bank in a source or sink configuration. With programmable power-up states, you can configure the initial output states in software to ensure safe operation when connected to industrial actuators. If a computer or application fault occurs, the PXI‑6515 can use digital I/O watchdogs to switch to a configurable safe output state to ensure detection and safe recovery from fault conditions. Programmable input filters eliminate glitches/spikes and provide debouncing for digital switches/relays through a software-selectable digital filter.