Siemens SIMATIC NET PROFIBUS manual How the DP/EIB Link Works, S7-300 ET 200M

Topologies of SIMATIC NET PROFIBUS Networks

S7-300 ET 200M ET 200S

PROFIBUS

Step 7 or COM PROFIBUS

EIB- RS-232 interface

instabus EIB

ETS2

+

Siemens

EIB product database

Figure 2-25 Example of a System Structure using DP/EIB Link

How the DP/EIB Link Works

The data objects of the instabus EIB are mapped in the PROFIBUS I/O area.

The structuring of the PROFIBUS slave I/O area and the number of EIB data objects with which the DP master communicates is decided by a selectable profile. In total, five different profiles are available that allow the user to adapt the DP/EIB link to the relevant application and to make optimum use of the memory resources of the DP master.

You configure the system (in other words set a profile) via PROFIBUS using, for example STEP 7 or COM PROFIBUS. The number of data objects specified by the selected profile can be assigned to the required instabus EIB components with the instabus EIB configuration software ETS 2.

Due to the database entry of the DP/EIB link, the instabus EIB configuration software ETS 2 is capable of displaying the number and data type of the valid instabus EIB data objects to the user. This allows a simple error-free assignment to be made. Following configuration, the PROFIBUS-DP master can both write and read the instabus EIB data objects.

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