User Manual

© Sealevel Systems, Inc.
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PIO-48.PC104 User Manual
Digital I/O Interface
The PIO-48.PC104’s 48 digital I/O channels are accessed via two industry-standard
50-pin header connectors. Each header provides 24 bits of digital I/O divided into
two eight-bit ports and two four bit ports for upper and lower nibble. Each port may
be individually configured via software command as input or output.
50-pin Header Connectors
Each of the 50-pin connectors has the following pin out which is compatible with a
wide variety of solid state relay racks: