Siemens SIMATIC NET PROFIBUS Provozní pokyny stáhnout pdf (Strana 61)

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101

Topologies of SIMATIC NET PROFIBUS Networks

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PROFIBUS Networks SIMATIC NET

6GK1970-5CA20-0AA1 Release 2 05/2000

How the DP/AS Interface Link 20 Works

With the DP/AS-interface link 20, up to 248 binary elements are accessible to a DP

master on the AS-interface (124 inputs and 124 outputs). You can therefore

combine the advantages of PROFIBUS-DP and AS-interface in a plant. The

DP/AS-interface link 20 can be used in the AS-interface standard mode (M2). In

this mode, the data bits of the slaves are accessible. The following master calls are

supported.

S Change address

S Write parameters

S Read configuration data

S Set configuration mode

S Configure actual configuration

Parameter Assignment

The DP/AS-interface link 20 is supported by STEP 7 (V4.1 and higher) and COM

PROFIBUS (V 3.2 and higher). The type and GSD files are shipped along with the

manual. On the AS-interface side, no special configuration is necessary; the

AS-Interface segment can be put into operation without PROFIBUS.

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