Cables to Go 10/100Base-TX Manuel d'utilisateur télécharger pdf (Page 2)

DeltaV Control Network Hardware October 2014

www.EmersonProcess.com2

Plug-and-play components. You can expand the network

easily: just plug in another workstation or controller and it is

recognized by the system.

Standards compliance. Network components are compliant

with standards such as IEEE, CE and CSA.

Network diagnostics. On the Smart Switches you can use

software diagnostics to verify proper communication-line

health. The LEDs on each individual switch provide health

status information.

Scalable in small increments. The DeltaV system provides

a package with very low initial cost. You are able to expand

the system readily and economically by adding hardware

incrementally to your system.

Redundant. The DeltaV Control Network is a fully redundant

communication network. Nodes may also be connected using

a simplex network, but this is not a recommended practice.

DeltaV Control Network Description

and Specification

The DeltaV Control Network can be physically connected

as a star or cascade (daisy-chain) topology. Other network

congurations are possible, such as a combination of a star

and cascade topology. (DeltaV does not support network

ring topologies).

Refer to the latest DeltaV system installation and planning

manual(s) for details of network layouts and network cable

shielding requirements and power and grounding requirements

for the overall DeltaV distributed control system.

The Control Network can use one or more Ethernet switches

for communications connections. To be supported by Emerson

Process Management, the DeltaV control network must be

installed using the network equipment listed in this document.

Wiring

The maximum twisted-pair cable length for the DeltaV

control network for any Ethernet-connected device is

100 meters (328 feet). If longer cable distances are needed

for this workstation-to-switch, controller-to-switch, or switch-

to-switch connections, there are various ber-optic cable

and transceiver solutions available from Emerson Process

Management as a standard supported solution. For special

network designs that go beyond the supported diagrams

shown in the DeltaV installation and planning manuals, consult

with the Emerson Process Management SureService team.

The DeltaV Control Network supports the use of auto-

negotiated 10-half, 100-half, 10 full, and 100-full duplex

communications where the industry standard auto-negotiation

process determines the highest speed at which two devices

will communicate with each other. The latest DeltaV network

products make use of gigabit Ethernet for switch-to-switch

communications and can support distances up to 108 Km

using standard product ber optic communications.

The DeltaV workstations and controllers contain two

Ethernet ports to provide the recommended redundant

communications. Early models of DeltaV controllers supported

10 megabit Ethernet at half-duplex only. The latest DeltaV

controllers auto-negotiate to any speed and duplex from

10-half to 100-full, depending on what the controller is

attached to. The workstations do the same: they auto-negotiate

to the highest speed and duplex available from their

attached device.

Ethernet Cable

The DeltaV system requires the use of Category 5e screened

(ScTP) cable for the 10/100/1000 BaseT/TX control network.

Fiber-optic Wiring

Because ber-optic cables do not conduct electricity, they

should be used in connections between buildings or in plant

areas where electromagnetic interference is present.

Fiber-optic cabling should also be used where wire runs are

longer than 100 meters (328 ft).

DeltaV Smart Switches

DeltaV Smart Switch

The DeltaV Network “Smart” switches are the next generation

in the use of commercial off-the-shelf (COTS) components in

control systems. Called “Built-for-purpose” commercial off the

shelf these switches combine the lower cost of off-the-shelf

components with DeltaV specic software and features to

make them more integrated and plug-and-play in the

control network.

DeltaV Smart Switches require no conguration to function in

the DeltaV network. Accessing the advanced features takes only

minor conguration that is easy to perform using the DeltaV

Smart Switch Command Center and secured so you can’t

incorrectly congure any switching functions that impact the

performance of the DeltaV system.

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Cables to Go 10/100Base-TX Manuel d'utilisateur Page 2

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