Glossary

industrial I/O

An Advantys STB I/O module designed at a moderate cost for typical continuous,

 

high-duty-cycle applications. Modules of this type often feature standard IEC

 

threshold ratings, usually providing user-configurable parameter options, on-board

 

protection, good resolution, and field wiring options. They are designed to operate

 

in moderate-to-high temperature ranges.

input filtering

The amount of time that a sensor must hold its signal on or off before the input

 

module detects the change of state.

input polarity

An input channel’s polarity determines when the input module sends a 1 and when

 

it sends a 0 to the master controller. If the polarity is normal, an input channel will

 

send a 1 to the controller when its field sensor turns on. If the polarity is reverse, an

 

input channel will send a 0 to the controller when its field sensor turns on.

input response

The time it takes for an input channel to receive a signal from the field sensor and

time

put it on the island bus.

INTERBUS

The INTERBUS fieldbus protocol observes a master/slave network model with an

protocol

active ring topology, having all devices integrated in a closed transmission path.

IP

internet protocol. That part of the TCP/IP protocol family that tracks the internet

 

addresses of nodes, routes outgoing messages, and recognizes incoming

 

messages.

 

 

L

LAN

local area network. A short-distance data communications network.

light industrial

An Advantys STB I/O module designed at a low cost for less rigorous (e.g.,

I/O

intermittent, low-duty-cycle) operating environments. Modules of this type operate in

 

lower temperature ranges with lower qualification and agency requirements and

 

limited on-board protection; they usually have limited or no user-configuration

 

options.

linearity

A measure of how closely a characteristic follows a straight-line function.

LSB

least significant bit, least significant byte. The part of a number, address, or field that

 

is written as the rightmost single value in conventional hexadecimal or binary

 

notation.

 

 

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890USE19600 April 2004

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Schneider Electric 890USE19600 Version 1.0 manual Industrial I/O, Input filtering, Input polarity, Input response, Time