Siemens DP, S7-300F-2 PN manual Data structure of the German language UDTs is as follows, DB47

Industry Automation and Drive Technologies - SCE

5 STARTING UP AN RFID PROJECT WITH CPU 315F-2 PN/DP AND RF180C

Below, the startup of an RFID project is described.

As SIMATIC S7-300 station, the CPU 315F-2 PN/DP is used.

In the CPU’s control program, a data structure has to be generated -by means of a function block call (FB45)- with data blocks and embedded UDT data types.

In our example, it has to be possible to perform the following actions for each reader:

-Writing data to the transponder (DB48 of the CPU to the MDS).

-Reading the data from the transponder (MDS to DB48 of the CPU).

-Reading the transponder data information (MDS to DB49 of the CPU).

-Reading the reader status information (reader to DB50 of CPU).

The data structure of the German language UDTs is as follows:

FB45

for Reader 1

DB1

Multi-instance

DB of FB45

FB45

for Reader 2

DB1

Multi-instance

DB of FB45

DB45

aUDT11 integrated

for each reader

UDT11 Byte 0 to Byte 49

to Reader 1

UDT11 Byte 50 to Byte 99

to Reader 2

DB47

Per commd UDT21

Write to MDS

Command 01

Read from MDS Command 02

Read MDS status Command 0B/01

Read MDS Status Command 0B/02

Read reader status Command 04 /01

Read reader status Command 04/06 Reader diagnosis

DB48

General data

Source data

Destination data

DB49 MDS Status

UDT261

UDT271

DB50 Reader Status

UDT111

UDT281

To generate the data structure, the required UDT data types have to be imported to the Step 7 project and function block FB45.

A sample program with the blocks is provided on the CD "RFID Systems“.

Additional information about the data structure is available in the function manual "RFID Systems FB45“

TIA Training Document	Page 10 of 65
Module E11
Status: 01/2010	Radio Frequency Identification (RFID) with SIMATIC S7-300F-2PN/DP and
RF180C