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ET 200 - characteristics14

ET 200 - characteristics

Simple configuration and increased plant availability

Simple configuration

Integral plug-in connections make installation quick and easy

and therefore reduce the costs. In the case of modular sys-

tems, mounting is on a rail. The modules are snapped onto

the rail and plugged into each other.

The sensors and actuators can be easily connected to a bus

system without the need to use an array of single wires with

cable distributors and cable racks. This makes the wiring sim-

ple and transparent, less error-prone and therefore low-cost.

Self-assembling backplane bus

Permanent wiring

Due to the separation of mechanics and electronics, perma-

nent wiring is possible, i.e. the station can be prewired before

installation or start-up. Prewiring can therefore be inspected

without the electronics modules which prevents damage to

sensitive components. The start-up time is therefore re-

duced. In addition, the modules can also be replaced in the

event of a fault without time-consuming rewiring.

Permanent wiring: Connections and electronics are separate

from one another

Hot swapping

In the event of a fault, electronic modules are easily replaced

during operation with the equipment live (hot swapping).

The station remains functional, and the plant therefore re-

mains available – there is no need for costly shutting down

and starting up of the plant. While the components are being

replaced, the wiring remains intact.

Hot swapping: Module replacement during operation

Configuration in Run (CiR)

Changes or expansions are required even during active oper-

ation of a (sub-) system. Possible applications are due to non-

stop requirements, that is, in continuous processes in process

engineering that cannot be shut down or whose production

cannot be interrupted.

Changes to the hardware configuration in RUN are possible

when distributed I/Os are connected to the S7-400:

• Stations can be added and removed,

e.g. for configuring a new process line

• I/O modules can be added and removed,

e.g. for implementing additional sensors

• I/O modules can be reparameterized,

e.g. for replacement parts

Changes to the configuration are possible during normal operation

SIMATIC_ET200_ENGLISCH.book Seite 14 Montag, 26. November 2012 10:02 10