Glossary

NIM

network interface module. This module is the interface between an island bus and

 

the fieldbus network of which the island is a part. A NIM enables all the I/O on the

 

island to be treated as a single node on the fieldbus. The NIM also provides 5 V of

 

logic power to the Advantys STB I/O modules in the same segment as the NIM.

NMT

network management. NMT protocols provide services for network initialization,

 

error control, and device status control.

 

 

O

object dictionary

(aka object directory) Part of the CANopen device model that provides a map to the

 

internal structure of CANopen devices (according to CANopen profile DS-401). A

 

device’s object dictionary is a lookup table that describes the data types,

 

communications objects, and application objects the device uses. By accessing a

 

particular device’s object dictionary through the CANopen fieldbus, you can predict

 

its network behavior and build a distributed application.

open industrial

A distributed communication network for industrial environments based on open

communication

standards (EN 50235, EN50254, and EN50170, and others) that allows the

network

exchange of data between devices from different manufacturers.

output filtering

The amount that it takes an output channel to send change-of-state information to

 

an actuator after the output module has received updated data from the NIM.

output polarity

An output channel’s polarity determines when the output module turns its field

 

actuator on and when it turns the actuator off. If the polarity is normal, an output

 

channel will turn its actuator on when the master controller sends it a 1. If the polarity

 

is reverse, an output channel will turn its actuator on when the master controller

 

sends it a 0.

output response

The time it takes for an output module to take an output signal from the island bus

time

and send it to its field actuator.

 

 

P

parameterize To supply the required value for an attribute of a device at run-time.

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890USE17700 specifications

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