Siemens DP, S7-300F-2 PN manual

Page 46

Industry Automation and Drive Technologies - SCE

Command and Status Word "BEST"

The control bits of FB45 are defined in the command and status word.

The command and status word with the variables is generated with UDT 11.

The variables and the associated relative addresses in UDT 11 are shown in the figure below.

Control bits:

The user starts his commands with these Boolean variables.

Relative address in UDT 10

Has to be set by the user

Must absolutely be polled by the user

Optimal scanning bits

TIA Training Document

Page 46 of 65

Module E11

 

Status: 01/2010

Radio Frequency Identification (RFID) with SIMATIC S7-300F-2PN/DP and

RF180C

 

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Contents Module E11 Industry Automation and Drive Technologies SCEIndustry Automation and Drive Technologies SCE Preface Page Objective S7’Prerequisites Simatic RF180C ASM Industry Automation and Drive Technologies SCE CPU Rfid Fundamentals Data structure of the German language UDTs is as follows DB47Page Industry Automation and Drive Technologies SCE Page Industry Automation and Drive Technologies SCE Industry Automation and Drive Technologies SCE Value range for the subnet screen form Industry Automation and Drive Technologies SCE MAC addressValue range for the IP address Value range for the address of the gateway routerIndustry Automation and Drive Technologies SCE Industry Automation and Drive Technologies SCE Industry Automation and Drive Technologies SCE Page Page Page Generating DB48 Open DB48, set up 1024 bytes Save and close DB48Generating DB49 Open DB49 and insert UDT261 and UDT271 Page Generating DB50 Open DB50 and insert UDT111 and UDT281 Save and close DB50 Generate DB47 Open DB47 and add UDT21 for each request Save and close DB47 Generating DB45 Open DB45 and insert UDT11 for each reader DB45, UDT11 is called for each readerDB47 request data block is referred to in DB45 Data view of DB45 to byteSave and close DB45 Page Set up in variables Set up OUT variables Generating Function FC11Save and close FC11 Writing data to the transponder Data View of the UDT21 Command OverviewCommand Reading data from the transponderInitialize Transponder Command NextCommand END Read out Reader statusSwitching the reader aerial on/off Transponder StatusExample of a command string in DB47 Data view of the UDT11 Variable Description Parameter commandDBaddress Value = 50 for Reader2 507 Industry Automation and Drive Technologies SCE ISO MDS Page Page Industry Automation and Drive Technologies SCE Control bits from Bit8 to Bit15 Variable DescriptionMoby U/D or RF300 Then, set up in variables Next, set up OUT variables Generating FB10Reader block Network 1 Command start Network 2 Reset Reader Industry Automation and Drive Technologies SCE Networks 4 to Page Task Supplementing the symbol tableGenerating FB1 Industry Automation and Drive Technologies SCE FB10 is inserted as a multi-instance block Industry Automation and Drive Technologies SCE Network Industry Automation and Drive Technologies SCE Network 4 to Page Open OB1 and call FB1 with DB1 Page Page Industry Automation and Drive Technologies SCE Symbol Table