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PROFIBUS Time synchronization

Created by: Angel83 at: 8/26/2010 10:58 AM (5 Replies)

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8/26/2010 10:58 AM	Rate (0)
Angel83 Posts: 3 Rating: (0)	Hi guys...I have the problem. I must time synchro. slaves on profibus network (slaves ->High voltage protection SPA-ZC302 from ABB). I dont know how :-( The slaves are connected to CP 443-5. In attachment I send documentation SPA-ZC302, on page 33 and 34 is discribe time synchronization. Please help me....sorry my english is bad Attachment SPA-ZC302_Instman_755014_ENc.pdf (177 Downloads)
Angel83 Posts: 3 Rating: (0)	Last edited by: Angel83 at: 8/26/2010 11:03 AM
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8/26/2010 6:59 PM	Rate (0)
dchartier Grandmaster-Expert Joined: 9/27/2006 Last visit: 3/20/2025 Posts: 12344 Rating: (2707)	Hello Angel; The DPV1 SFBs for Step 7 are SFB 52 "RDREC" and SFB 53 "WRREC". See this extract form the System and Standard functions manual: http://support.automation.siemens.com/WW/view/en/44240604 *8 DPV1 SFBs According to PNO AK 1131* *8.1 Reading a Data Record with SFB 52 "RDREC"* *8.2 Writing a Data Record with SFB 53 "WRREC"* *Note*The SFB 52 "WRREC" interface is identical to the FB "WRREC" defined in the standard "PROFIBUS Guideline PROFIBUS Communication and Proxy Function Blocks according to IEC 61131-3" *Description* With the SFB 52 "WRREC" (write record) you transfer a data record with the number INDEX to a DP slave/PROFINET IO device component (module or submodule) that has been addressed via ID. Specify the byte length of the data record to be transmitted. The selected length of the source area RECORD should, therefore, have at least the length of LEN bytes. TRUE on output parameter DONE verifies that the data record has been successfully transferred to the DP Slave. The output parameter ERROR indicates whether a data record transmission error has occurred. In this case, the output parameter STATUS contains the error information. I would recommend that you start by reading the Real-time Clock of the CPU (using SFC 1, "RD_CLK"), using for example the following FAQ: http://support.automation.siemens.com/WW/view/en/21222026 Then use a specific DB created to the format of the ABB time synch required values (as per your document), transfer the required byte values from SFC 1 to the ABB DB, and finally use SFB 53 to write this "data record" to the DPV1 slaves. Hope this helps, Daniel Chartier

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This contribution was helpful to 1 thankful Users J_Bell

8/27/2010 10:15 AM	Rate (0)
Angel83 Posts: 3 Rating: (0)	Hello dchartier... Thanks for your help. I make DB for time synchro ABB slave ( how is describe in documentation). I dont understand how can write this DB to slave on requiredSLOT and required INDEX. Next i dont understand how to address slave, when i have three profibus network and slaves have identical address (on various networks). I would ask you whether you sent me the example of use SFB53 ( for me problem time synchro) Thank for all ....
Angel83 Posts: 3 Rating: (0)
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8/27/2010 11:53 AM	Rate (0)
J_Bell Posts: 5822 Rating: (412)	Hello, I am sorry but did you already check the manual or the online help about the SFB? If you did you should have noticed that the module is identified by the unique ID (Hardwareadresse) configured in HW Config. This address is also unique in the complete station, independent if you have one or three of five stations with the same address at different Master / Controller systems. Best regards J_Bell
J_Bell Posts: 5822 Rating: (412)
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This contribution was helpful to 1 thankful Users dchartier

9/8/2010 10:39 AM	Rate (0)
Angel83 Posts: 3 Rating: (0)	Hi colleagues, sorry but i dont understand how use SFB53 for my problem. In document from ABB is describe that, i must write data format (time data format) on correspodent SLOT and INDEX. ( How slot and how index ?). Please help my if you know....thanks
Angel83 Posts: 3 Rating: (0)
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9/8/2010 1:32 PM	Rate (0)
J_Bell Posts: 5822 Rating: (412)	Dear Angel83, I fear the only way to get a suitable solution for you is to contact the international customer support. They may contact you to work this through step by step. Please open a Support Request, you can find this function at the top right of this page in the Contact field. Best regards J_Bell
J_Bell Posts: 5822 Rating: (412)
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