National Instruments NI-DNET User Manual page 78

Glossary
Symbol
m
k
A
A
AC
actuator
ANSI
Application
Programming Interface
(API)
ASCII
Assembly Object
attribute
automatic polling
© National Instruments Corporation
Prefix
milli
kilo
amperes
alternating current
A device that uses electrical, mechanical, or other signals to change
the value of an external, real-world variable. In the context of device
networks, actuators are devices that receive their primary data value from
over the network; examples include valves and motor starters. Also known
as final control element.
American National Standards Institute
A collection of functions used by a user application to access hardware.
Within NI-DNET, you use API functions to make calls into the NI-DNET
driver.
American Standard Code for Information Exchange
Objects in DeviceNet devices which route I/O message contents to/from
individual attributes in the device.
The externally visible qualities of an object; for example, an instance
square of class Geometric Shapes could have the attributes length of sides
and color, with the values 4 in. and blue.
A polled I/O mode in which NI-DNET automatically determines an
appropriate scanned polling
Value
10 –3
10 3
rate for your DeviceNet system.
G-1 NI-DNET User Manual