National Instruments NI-DNET User Manual page 79

Glossary
B
b
background polling
bit strobed I/O
C
CAN
change-of-state I/O
class
client
common services
connection
controller
COS I/O
cyclic I/O
NI-DNET User Manual
Bits
A polled I/O communication scheme in which all polled slaves are grouped
into two different communication rates: a foreground rate and a slower
background rate.
Master/slave I/O connection in which the master broadcasts a single strobe
command to all strobed slaves then receives a strobe response from each
strobed slave.
Controller Area Network
Master/slave I/O connection which is similar to cyclic I/O but data can be
sent when a change in the data is detected.
A classification of things with similar qualities.
In explicit messaging connections, the client is the device requesting
execution of the service.
Services defined by the DeviceNet specification such that they are largely
interoperable.
An association between two or more devices on a network that describes
when and how data is transferred.
A device that receives data from sensors and sends data to actuators to hold
one or more external, real-world variables at a certain level or condition.
A thermostat is a simple example of a controller.
See change-of-state I/O.
Master/slave I/O connection in which the slave (or master) sends data at a
fixed interval.
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