Design of New Generation of Binary IO Card for Modular Microprocessor Control System

A new generation of binary input/output card for a modular control system is introduced in this paper. The primary purpose of the proposed binary input/output card is high integration of the number of 32 binary input and output channels. The individual binary channels are designed to fulfill standard industrial control voltage levels. The binary input/output card is designed like a 3U plug-in unit to fit in a standard 3U height 19″ sub-rack enclosure. The binary input/output card is equipped with hardware safety and diagnostic features like hardware blocking ability, autodetection, and infrared debug interface. The binary input/output card contains direct system and user signals as well as communications interfaces such as system CAN and user CAN.