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No Data log found

Created by: Nopolis at: 10/23/2019 6:40 PM (20 Replies)

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10/23/2019 6:40 PM	Rate (0)
Nopolis Posts: 7 Rating: (0)	Hello, if we trying get DataLog File from LOGO - displayed message No Data log found. SD card 2Gb fomatted as FAT32 in Win 10 PC. Checking SD card status in Logo menu is OK.
Nopolis Posts: 7 Rating: (0)
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10/23/2019 7:07 PM	Rate (0)
Scorp Platinum Member Joined: 2/22/2008 Last visit: 4/25/2025 Posts: 2698 Rating: (210)	You are sure to use datalog as described by Siemens ? We don't see any program to analyse for any fault. Regards, Scorp

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10/24/2019 6:54 AM	Rate (0)
Nopolis Posts: 7 Rating: (0)	Yes, we configure datalog as Siemens described. See attached scrennshots. Attachment 2019-10-24_09-48-21.png (519 Downloads)
Nopolis Posts: 7 Rating: (0)
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10/24/2019 6:57 AM	Rate (0)
Nopolis Posts: 7 Rating: (0)	Second screenshot Attachment 2019-10-24_09-49-13.png (478 Downloads)
Nopolis Posts: 7 Rating: (0)
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10/24/2019 6:59 AM	Rate (0)
ixo65 Grandmaster Joined: 12/18/2014 Last visit: 9/10/2025 Posts: 35940 Rating: (4500)	And what does the parameterization of the data log look like?

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10/24/2019 7:29 AM	Rate (0)
Nopolis Posts: 7 Rating: (0)	On SD card created zero length file 203_0 without any data. Attachment 2019-10-24_10-27-27.png (471 Downloads)
Nopolis Posts: 7 Rating: (0)
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10/24/2019 7:36 AM	Rate (0)
ixo65 Grandmaster Joined: 12/18/2014 Last visit: 9/10/2025 Posts: 35940 Rating: (4500)	First you write that no data log is created. Now you write, it will create a data log, but with the size 0 kB. I asked how you parameterized the data log and there is no answer to my question. How should you be helped then? Mark in the LSC diagram the block "Data Log" and let you show the properties. And of the properties please make a screenshot and upload the screenshot. Or even better: Please upload your program (as a ZIP file).
	Last edited by: ixo65 at: 10/24/2019 07:37:10
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10/24/2019 7:47 AM	Rate (0)
Scorp Platinum Member Joined: 2/22/2008 Last visit: 4/25/2025 Posts: 2698 Rating: (210)	The first 512 entries of Datalog are written in the internal memory, then the SD card is used, the manual. How do you look on your SD card, just removing the card in run modus and looking with a memory reader at the PC ? If so, then try to read the Datalog with Logosoft comfort, this will read the last file and in case of one file also the internal memory. To remove the SD card, first stop the program to avoid lost data. To be sure to have data on SD card, wait at least 512 * 10s ~ 85 min or reduce the time interval. Regards, Scorp @ixo65 He has uploaded a picture with the properties, see entries.
	Last edited by: Scorp at: 10/24/2019 07:50:14
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10/24/2019 8:34 AM	Rate (0)
ixo65 Grandmaster Joined: 12/18/2014 Last visit: 9/10/2025 Posts: 35940 Rating: (4500)	@Scorp, to the time, as he make the second pso with the entries, wrote I my post.

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10/24/2019 8:45 AM	Rate (0)
ixo65 Grandmaster Joined: 12/18/2014 Last visit: 9/10/2025 Posts: 35940 Rating: (4500)	Scorp The first 512 entries of Datalog are written in the internal memory, then the SD card is used, the manual. How do you look on your SD card, just removing the card in run modus and looking with a memory reader at the PC ? If so, then try to read the Datalog with Logosoft comfort, this will read the last file and in case of one file also the internal memory. To remove the SD card, first stop the program to avoid lost data. To be sure to have data on SD card, wait at least 512 * 10s ~ 85 min or reduce the time interval. Regards, Scorp @ixo65 He has uploaded a picture with the properties, see entries. Not the first 512 entries, that's not right. The buffer for data logging has 1024 Bytes. Is a SD Card in the LOGO!, saved the LOGO! the first 512 Bytes in the buffer before the LOGO! saved the logged datas on the SD Card. See attachment. Attachment LOGO! 8 manual 0BA8 2017_11 xxxx8-0BA0 page 276.pdf (534 Downloads)

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10/24/2019 9:08 AM	Rate (0)
ixo65 Grandmaster Joined: 12/18/2014 Last visit: 9/10/2025 Posts: 35940 Rating: (4500)	I did tests. From this it can be seen that the data log is also written if the buffer is not yet filled with 512 bytes. I did the first log attempt with an interval of 1 second and then the data log from the LOGO! downloaded. Then I carried out the second log attempt with an interval of 5 seconds and then the data log from the LOGO! downloaded. Then I carried out the third log attempt with an interval of 10 seconds and then the data log from the LOGO! downloaded. Then I have the SD card from the LOGO! and transfer the data logs from the SD card to the PC. The respective data logs are identical. Data Logs are attached. Attachment Data Logs.zip (385 Downloads)

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10/24/2019 9:59 AM	Rate (0)
Scorp Platinum Member Joined: 2/22/2008 Last visit: 4/25/2025 Posts: 2698 Rating: (210)	You are right, should be bytes and not entries. With 10 bytes per entry and 10s time interval it takes 8 minutes to fill the buffer. I miss files in your zip from sd card, only 3 files for download are available. Regards, Scorp

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10/24/2019 10:26 AM	Rate (0)
ixo65 Grandmaster Joined: 12/18/2014 Last visit: 9/10/2025 Posts: 35940 Rating: (4500)	Scorp I miss files in your zip from sd card, only 3 files for download are available. Here have news. Attachment Data Logs.zip (291 Downloads)

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10/24/2019 10:59 AM	Rate (0)
Scorp Platinum Member Joined: 2/22/2008 Last visit: 4/25/2025 Posts: 2698 Rating: (210)	The oldest file on SD card is empty, therefore it may be possible, that the first datalog is only written to the internal memory. It would be easier with a detailed description of the datalog storage, but up to now i have not found anything else as your uploaded part of instructions. Regards, Scorp

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10/24/2019 2:57 PM	Rate (0)
Nopolis Posts: 7 Rating: (0)	Thanka all for replyes. 1. When I trying get DataLog via LSC I receive massage "No datalog found". 2. If I stop Logo and remove SD Card and read them in PC then I found zero length csv file (Program worked 1 week before read SD card) 3. Programm and screenshot of DataLog block properties is attached. Attachment Data Logs.zip (322 Downloads)
Nopolis Posts: 7 Rating: (0)
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10/24/2019 3:30 PM	Rate (0)
ixo65 Grandmaster Joined: 12/18/2014 Last visit: 9/10/2025 Posts: 35940 Rating: (4500)	Hello Nopolis, please be so Kind and upload you program as a ZIP file. Thanks.

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10/24/2019 6:25 PM	Rate (0)
Nopolis Posts: 7 Rating: (0)	Program in attached zip file Attachment Ver 9.zip (307 Downloads)
Nopolis Posts: 7 Rating: (0)
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This contribution was helpful to 1 thankful Users ixo65

10/24/2019 7:19 PM	Rate (1)
ixo65 Grandmaster Joined: 12/18/2014 Last visit: 9/10/2025 Posts: 35940 Rating: (4500)	First transferred your uploaded program to my LOGO! 8.FS4. Since exactly the same error occurred as with you: No data log to upload to the LOGO! and no CSV file on the SD card. Then I deleted the "Data Log" block in the LSC diagram, selected all objects in the diagram, copied them and inserted them into a new, empty LSC diagram. After that i create the data log and transferred the new program in my LOGO!. And lo and behold ... A data log will be created, it can be uploades from the LOGO!. And also on the SD card a data log was created. In attachement: - the new program (you must control the settings, IP address etc.) - the uploaded Data Log from the LOGO! (192.168.178.32_2019-10-24 18-51-39.csv) - the Data from the SD Card (32_18.csv) Attachment Data Logs.zip (307 Downloads)

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10/24/2019 8:13 PM	Rate (0)
Scorp Platinum Member Joined: 2/22/2008 Last visit: 4/25/2025 Posts: 2698 Rating: (210)	Once again a destroyed program, which can be uploaded to the Logo and don't have all functions.

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10/24/2019 8:23 PM	Rate (0)
ixo65 Grandmaster Joined: 12/18/2014 Last visit: 9/10/2025 Posts: 35940 Rating: (4500)	I suggest the User Nopolis to start a Support Request so that Siemens will examined his source program.

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This contribution was helpful to 1 thankful Users Nopolis

10/25/2019 3:14 PM	Rate (0)
Nopolis Posts: 7 Rating: (0)	ixo65 thank you very much! Due to LOGO located in customer site I will try implement your solution only on next week.
Nopolis Posts: 7 Rating: (0)
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This contribution was helpful to 1 thankful Users ixo65

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