1-2
Section
DeviceNet Functions
3
1-2
DeviceNet Functions
1-2-1 DeviceNet Features
This section explains the features of the DeviceNet network.
The DeviceNet conforms to the DeviceNet open field network specification,
which means that devices (Masters and Slaves) produced by other manufactur-
ers can be connected to the Network. A wide range of field-level applications can
thus be supported by combining valve devices, sensors, and other devices.
Remote I/O communications that constantly exchange I/O data between the
Master and Slaves can be executed simultaneously with message communica-
tions that send/receive Master Unit data as required by the application. A Devi-
ceNet network can thus be installed to flexibly handle applications that require
both bit data and message data.
A Configurator (sold separately) can be used to enable connection of more than
one Master to the Network, allowing message communications between Mas-
ters and remote I/O communications between multiple groups of Masters and
Slaves. This allows the DeviceNet network to be used as a common bus to unify
controls while reducing wiring.
A Configurator (sold separately) can be used to enable mounting more than one
Master Unit to a single PC, allowing control of many more points. This feature
can easily handle line expansions and other applications.
A Configurator (sold separately) can be used to enable flexible allocation of I/O,
i.e., in any area and in any order. This allows I/O allocations that suit the applica-
tion to simplify programming and enable effective usage of PC memory areas.
A Configurator (sold separately) can be used to set the communications cycle
time, enabling usage of Slaves with slow response times.
Use a multi-drop trunk line, T-branch multi-drop lines, or daisy-chain drop lines.
All three connection methods can be combined to flexibly construct a network
that meets the needs of the application.
Multi-drop trunk line
T-branch multi-drop line
Trunk line
Drop line
Daisy-chain
drop line
Multi-vendor Network
Simultaneous Remote I/O
and Message Services
Connect Multiple Masters
to the Same Network
Multi-layer Networks
Allow Multi-point Control
and Line Expansion
Free Remote I/O
Allocation
Handle Slaves with
Different Response
Speeds
Easily Expand or Change
Lines with Various
Connection Methods
