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Durante todo el año recibimos muchos mail,
pidiéndonos información para realizar trabajos sobre autómatas. Así que ahora es
el momento para recordaros que necesitamos de vuestra colaboración enviándonos
los que ya habéis presentado.
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Physical Layer Flexibility
ControlNet's cost-effective performance is further enhanced by flexible
installation options, widely available cable, and simple taps with no minimum
spacing requirements.
 | RG-6 quad shield cable, which is inexpensive and used widely in the cable
TV industry
| Passive taps that can be installed anywhere on the trunk with no minimum
spacing requirements
| Support for bus, star, or tree topologies to meet various application
needs
| Optional media redundancy that transparently allows higher system
availability
| Support for fiber optic cabling |
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Tree Star
ControlNet supports many topologies including Bus, Tree,
Star and combinations using repeaters ( ).
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ControlNet uses inexpensive RG-6 quad shield
cable. Network Taps provide flexible mounting options: "Y",
"T", straight or right ended. |
Multivendor Interoperability
As the association for users of ControlNet technology, ControlNet
International is an independent organization that maintains and distributes the
specification, as well as manages common marketing efforts of group members.
Using ControlNet, you can select best-of-breed products from member suppliers
world-wide. In addition, ControlNet International provides a forum for directing
the future of ControlNet technology and products, including conformance and
interoperability testing services and self-test software.
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ControlNet technology provides for plug-and-play
components with off-the-shelf products from multiple vendors. |
Technical Specifications
Type of Bus
Control
I/O Interlocking and programming data on same wire
Bus Topologies
Linear Bus
Tree
Star
Mix of any of all three
Bus Speed
5 Mbit/sec
Length, single segment
1,000 m (coax)
1,000 m with 2 nodes
500 m with 32 nodes
250 m with 48 nodes
3,000 m (fiber)
Number of Repeaters
limited only by the delay through the system
Maximum Length with Repeaters
30+ km (coax and fiber)
Types of Repeaters
high voltage ac & dc
low voltage dc
Device Power
Devices powered externally
Connectors (Standard Coax BNC)
barrel (plug-to-plug)
bullet (jack-to-jack)
extender (plug-to-jack)
isolated bulkhead (jack-to-jack )
right angle (plug-to-jack)
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Communication Model
Producer/Consumer
Number of Nodes
99 Maximum Addressable Nodes
48 taps (nodes) without a Repeater
Size of Data Packet
Variable, 0-510 bytes
Number of I/O Data Points
No limit
Network Update Time
2-100 ms (user selectable)
Communication Modes (Bus-Addressing)
Master/Slave
Multi-Master
Peer-to-Peer
I/O Data Triggers
Change-of-State
Cyclic
On demand
Cyclic Redundancy Check
Modified CCITT using 16-bit, polynomial
Application Layer
Object-Oriented: Class/Instance/Attribute
Device Object Model using Device Profiles
Physical Media
Coax - RG-6 quad shield
Fiber
Single or Dual - redundant media
Network and System Features
Remove/Insert Devices Under Power
Deterministic, Repeatable
Intrinsic Safety Option
Duplicate Node ID Detection
Message Fragmentation
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http://www.controlnet.org
ControlNet is a Trademark of ControlNet International, Ltd.
DeviceNet is a Trademark of the Open DeviceNet Vendor Association, Inc.
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