Siemens SIMATIC ET 200SP Configuration Manual - Page 4

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1 Task and Solution

Task and Solution

1.1

Description

For bigger or widely dispersed plants, multiple IO controllers are frequently used.

Every peripheral module of an IO device is assigned to a particular IO controller. If

sensors spatially close to one another must send data to different IO controllers,

multiple IO devices are required.

In this configuration description, an IO device shall be assigned to multiple IO

controllers.

Requirements

The following requirements have to be considered:



Reduction of the required network and system components



Sustained reduction of engineering costs and commissioning time



Easy communication between multiple IO controllers and an IO device.

1.2

Description

The function "Shared Device" allows splitting up the modules of an IO device

between different IO controllers. This distribution allows flexible automation

concepts. You have the possibility, for example, to summarize peripheral modules

spatially close to one another into one IO device.

Diagrammatic representation

The following figure schematically shows the function "Shared Device":

Figure 1-1

Controller

Shared Device allows a shared use of IO devices via multiple IO controllers without

additional CPU-CPU communication.

SharedDeviceKonfig

Entry ID: 109741600,

V1.0,

Logical Assignment

PROFINET

Module

Device

11/2016

Controller

Module