User Manual

PIO-48 User Manual

Introduction

The PIO-48 part number 4030 digital I/O interface provides 48 channels of buffered

drive digital I/O emulating 8255 mode zero. The PIO-48 can be utilized for a variety

of control and automation applications including control and 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 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 PIO-48 is designed to be used with a variety of Operating Systems including

Windows 98/NT/ME/2000/XP, Linux and DOS. The SeaI/O API (Application

Programmer Interface) included on CD with the PIO-48 provides a variety of useful

high-level function calls implemented as a Windows dynamic link library (DLL) and

as a Linux kernel module and library. In addition to the API, SeaI/O includes

sample code and utilities to simplify software development.

Other Sealevel ISA Digital I/O Products

DIO-16 (P/N 3096) - 8 Reed Relay Outputs / 8 Opto-Isolated Inputs

ISO-16 (P/N 3094) - 16 Optically Isolated Inputs

REL-16 (P/N 3095) - 16 Reed Relay Outputs

DIO-32B (P/N 3093) - 16 Reed Relay Outputs / 16 Opto-Isolated

Inputs

REL-32 (P/N 3098) - 32 Switched Relay Outputs