Siemens SIMATIC NET PROFIBUS manual How the DP/AS Interface Link 20 Works, Parameter Assignment

Topologies of SIMATIC NET PROFIBUS Networks

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.

SChange address

SWrite parameters

SRead configuration data

SSet configuration mode

SConfigure 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.

PROFIBUS Networks SIMATIC NET	2-35
6GK1970-5CA20-0AA1 Release 2 05/2000