1/25/2010 1:05 PM | |
Joined: 5/28/2008 Last visit: 9/11/2024 Posts: 1343 Rating:
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A value in array is nothing more then a "normal" value. You can also connect a array-variable to a graphic in HMI. But this don't solve the problem with saving the value for a long peroid. Here is a FAQ, which is nearly to your problem. But I don't like this method: How can you back up parameters before loading a new control program? Another way could be, to connect your S7-1200 with a OPC-Server. As OPC Client you can take MS Excel, there you can save your value in a table. After turning on your S7-1200 again after 3 month, you can write the last values from Excel to PLC. Hope it helps a little bit more.. regards |
1/25/2010 1:22 PM | |
Posts: 65 Rating:
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Thank you very much, Robster! I'll try it all. |
1/27/2010 4:00 PM | |
Joined: 9/23/2005 Last visit: 9/11/2024 Posts: 4347 Rating:
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Hi, the TP277, MP277, MP377 and Runtime can work with Historical Data. If they are homologated for S7-1200, that is other history... The FAQ http://support.automation.siemens.com/BR/view/en/38111886shows how to configure a Runtime with S7-1200. The same principle shouldwork with others HMI. |
Denilson Pegaia |
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12/4/2015 1:00 PM | |
Joined: 9/1/2005 Last visit: 8/12/2024 Posts: 4104 Rating:
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New question published by Ted_ng is split to a separate thread with the subject read value from sensor - How to save value with is not depend on time?. Best regards |
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