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[ pdf ] INTRODUCTION TO PROFIBUS DP

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Introduction To ProfiBus DP

Summary:
ABOUT PROFIBUS.…………………………………………… 3 PROFIBUS DP SLAVE STATE MACHINE..………………… 7 Power ON/Reset State………………………………….. 7 Parameterization State…………………………………. 7 I/O Configuration State…………………………………. 7 Data Exchange State……………………………………. 8 Fail Safe Operation…………………..………………….. 8 Watchdog……………………………..………………….. 9 GSD FILES……………………………………………………… 10 REQUIRED SOFTWARE…..………………..………………… 13 TYPES OF TRANSMISSION………………..………………… 14 SRD Send and Request Data w/Acknowledge…….. 14 SDN Send Data w/No Acknowledge………………….. 14 PROFIBUS DP DATA CHARACTER FORMAT……………. 14 ProfiBus Data Error Checking………….…………….. 15 PROFIBUS TELEGRAM STRUCTURE…………………….. 15 Start Delimiter……………………………………………. 16 Length Of Telegram…………………………………….. 18 Destination Address & Source Address…………….. 18 Function Code Or Frame Control…………………….. 18 Service Access Points………………………………….. 19 Data Unit………………………………………………….. 19 Frame Check Sequence………………………………… 19 End Delimiter…………………………………………….. 20 DP COMMAND FUNCTIONS…………………………………. 20 Function Status………………………………………….. 20 OPERATING STATES AND APPLICABLE FUNCTIONS.... 21 Initial Power ON/Reset………………………………….. 21 Set_Slave_Add Telegram………………………… 22 Parameterization……..………………………………….. 23 Set_Prm Telegram…………………………………. 24 I/O Configuration……..………………………………….. 26 Chk_Cfg Telegram…………………………………. 26 Get_Cfg Telegram…………………………………. 27 Diag_Data Telegram………………………………. 27 Data Exchange State..………………………………….. 33 Data_Exchange Telegram……..…………………. 33 Read_Inp Telegram……..…………………………. 33 Read_Outp Telegram…………..…………………. 34 Global_Control Services..……..…………………. 34 Use Of Freeze..……..……..…………………. 35 Use Of Sync/Unsync.……..…………………. 35 BUS TIMING………………….…………………………………. 36
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    Posted by emad ismail
    Tue May 15, 2012 03:19:40 AM

    thank you for this

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