Schneider Electric INTERBUS Basic Spécifications télécharger pdf (Page 148)

Glossary

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31004624 8/2009

I/O base

A mounting device, designed to seat an Advantys STB I/O module, hang it on a DIN

rail, and connect it to the Island bus. It provides the connection point where the

module can receive either 24 VDC or 115/230 VAC from the input or output power

bus distributed by a PDM.

I/O module

In a programmable controller system, an I/O module interfaces directly to the

sensors and actuators of the machine/process. This module is the component that

mounts in an I/O base and provides electrical connections between the controller

and the field devices. Normal I/O module capacities are offered in a variety of signal

levels and capacities.

I/O scanning

The continuous polling of the Advantys STB I/O modules performed by the COMS

to collect data bits, status, nd diagnostics information.

IEC

International Electrotechnical Commission Carrier. Founded in 1884 to focus on

advancing the theory and practice of electrical, electronics, and computer

engineering, and computer science. EN 61131-2 is the specification that deals with

industrial automation equipment.

IEC type 1 input

Type 1 digital inputs support sensor signals from mechanical switching devices such

as relay contacts and push buttons operating in normal environmental conditions.

IEC type 2 input

Type 2 digital inputs support sensor signals from solid state devices or mechanical

contact switching devices such as relay contacts, push buttons (in normal or harsh

environmental conditions), and 2- or 3-wire proximity switches.

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Schneider Electric INTERBUS Basic Spécifications Page 148