Specifications

Communication Choices 7
1785-SO036C-EN-P - April 2002
ControlNet Network The ControlNet network is an open, high-speed deterministic network
used for transmitting time-critical information. It provides real-time
control and messaging services for peer-to-peer communication. As a
high-speed link between controllers and I/O devices, a ControlNet
network combines the capabilities of existing Universal Remote I/O
and Data Highway Plus
TM
networks. You can connect a variety of
devices to a ControlNet network, including personal computers,
controllers, operator interface devices, drives, I/O modules, and other
devices with ControlNet connections.
At the control layer, a ControlNet network combines the functionality
of an I/O network and a peer-to-peer messaging network. This open
network provides the performance required for critical control data,
such as I/O updates and controller-to-controller interlocking.
ControlNet also supports transfers of non-critical data, such as
program uploads, downloads, and messaging.
ControlNet specifications
For more information, see the ControlNet Network System Overview,
publication CNET-SO001.
Features:
• control layer
• transfers I/O and program data
• high-speed
• deterministic
Communication Choices
41393
workstation running
programming software
with 1784-KTCx
ControlNet
ControlLogix Gateway or
Logix5550 controller
PLC-5/40C controller
1395 drive
FLEX
TM
I/O adapter
PanelView 1200
operator terminal
Rates: Cable lengths: Maximum number
of nodes:
transmission: 5Mbps
network update time: 2-100ms
1000m (3,280 ft.) with 2 devices
250m (820 ft.) with a maximum of 48 devices
tap drop cable length fixed at 1m (3 ft.)
maximum distance 6km with repeaters
99