I-O Display Systems Basic I/O Product - Manual (Page 48)

Introduction 1
1-2(Vol.2)
I/O signal compatibility:
BASIC I/O ADs use duTec I/O modules to match signal requirements exactly. With a direct
interface to sensors, no external signal conditioning is required. Furthermore, all duTec
modules feature total electrical isolation, both module to logic and module to module. Analog
modules are available to measure:
! Millivolts DC to hundreds of volts AC
! Milliamps DC to amps AC
! Frequency to tens of Khz
! Temperature with all popular thermocouples and restive
temperature devices
A full range of industry standard digital modules are available for AC, DC, and dry contact
inputs and outputs to hundreds of volts.
Thermocouple modules provide a cold reference junction compensation. BASIC I/O AD
instructions provide linearized thermocouple and RTD sensor data. Engineering unit
conversions are handled at the host lever.
Diagnostics:
To confirm internal operations and communications link integrity, a set of built-in diagnostics
test key system functions each time power is applied. Diagnostics reduce both installation
debugging and operation troubleshooting.
A hardware watchdog timer insures safe shutdown in the event of processor or software
failures by turning all outputs OFF. Normally ON modules are available for those loads that
must remain ON.
Communications watchdogs:
The BASIC I/O AD can be instructed to implement alarm and fail-safe states in the event of a
communication failure.
Easy setup:
The BASIC I/O AD uses a pushbutton and an on board LED indicator to configure the unit
address, analog VS digital map and baud rate.