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Siemens AG
Entry type: Application example Entry ID: 99742035, Entry date: 01/07/2015
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Sample program ET 200S 1SI MODBUS zXX21_11_1SI_MODBUS.zip for STEP 7 (TIA Portal)

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Description
This sample program, contained in the project zXX21_11_1SI_MODBUS, includes the standard functions for operating the communications module MODBUS / USS of the ET 200S 1SI with the MODBUS protocol.

Software requirements
The .zip file includes two projects:
STEP 7 Professional V11.0 + SP 2
STEP 7 Professional V13

Structure of the sample program
In this example we operate two serial interface modules, 1SI MODBUS / USS as RS 232C connection in an ET 200S in the TIA Portal. In this example the communication is controlled by means of the DP master module CPU 314C-2 DP.

Installation of the sample program
After downloading the project you must unpack the ZIP archive; a local path in the Engineering Station must be used as target path for the project. After unpacking, start the TIA Portal and open the project in the Portal View. The example described is now available in the Project View.

Sample program in STEP 7 V5.x
The example also exists in STEP 7 V5.x. It is included in the download of the contribution "Function Blocks, Examples and User Manuals of the Serial Interface ET 200S 1SI" (Entry ID 25358470).

zXX21_11_1SI_MODBUS.zip

Last change
Update to STEP 7 V13.

Security information
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https://www.siemens.com/cybersecurity#Ouraspiration.
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