Siemens SIMATIC TIWAY 1 Spezifikationen PDF herunterladen (Seite 31)

Network Design

and Setup

–4

3–4

Network Design and Setup

Since all applications must use one (or more) of the three basic network

configurations (PLC as Master, Host as Master and Peer as Master), we can easily

draw the complete diagram for our example factory. To refresh your memory, here

are the possible configurations.

Possible Configurations

1 – PLC as Master Network

2 – Host as Master Network

S Master can initiate read or write

with any slave station

S PLC with DCM as master

S Full range of slave stations

available

S Host computer (or other

intelligent device) as master

S Requires DirectNET program

in the host

S Full range of slave stations

available

3 – Peer as Master Network

S Two stations only

S Only DL405 DCMs

S Either station can initiate a

request

Master

Slaves

DCM

Built-in port

DCM

Master

Slaves

Built-in port DCM

Peer Master Peer Master

DCM DCM

There are many different ways to configure the example. Notice, in the example on

the next page, the areas where the different configurations were used. This example

uses four small networks to solve the problem. The advantages of this approach are

that you can optimize each portion without affecting other parts of the factory.

Sketch the Network

Diagram

1 2 ... 26 27 28 29 30 31 32 33 34 35 36 ... 206 207

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