User Manual Manual

© Sealevel Systems, Inc.
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SeaLINK PIO-48 User Manual
Introduction
The SeaLINK PIO-48, part number 8203, provides an easy method for interfacing
common digital I/O circuitry via any computer’s USB port. Typical applications
include control/monitoring of TTL devices (e.g. LEDs, small solenoids, small
relays) and interfacing to solid-state relay racks (SSRs) for high-power AC or DC
loads.
The SeaLINK PIO-48’s 48 digital I/O channels are accessed via two 50-pin header
connectors with industry-standard pin out. Each header provides 24 bits of digital
I/O divided into three eight-bit groups. Each eight-bit group may be individually
configured via software command as input or output to best match your particular
application requirements.
The SeaLINK PIO-48 is designed to be used under Windows 98/ME/2000/XP. The
SeaI/O API (Application Programmer Interface) included on CD with the SeaLINK
PIO-48 provides a variety of useful high-level function calls implemented in a
Windows dynamic link library (DLL). This API gives access to the SeaLINK PIO-
48’s I/O from Windows-based platforms such as Visual C++. In addition to the
API, SeaI/O includes an ActiveX control along with sample code and utilities to
simplify software development.
Other Sealevel SeaLINK USB to Digital I/O Products
SeaLINK PIO-96 (P/N 8205) - 96 TTL Inputs/Outputs
SeaLINK PLC-16 (P/N 8206) - 8 Form C Outputs/ 8 Opto-isolated Inputs
SeaLINK REL-16 (P/N 8207) - 16 Reed Relay Outputs
SeaLINK ISO-16 (P/N 8208) - 16 Opto-isolated Inputs
SeaLINK DIO-16 (P/N 8209) - 8 Reed Outputs/8 Opto-isolated Inputs