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Alarm history OP77a after power up

4/29/2009 8:25 PM	Rate (0)
De vonkentrekker Member Joined: 11/26/2008 Last visit: 2/5/2025 Posts: 4 Rating: (1)	Hello everybody, I am new here at this forum. I am working on a project with an S7 200 CPU 226 and a HMI device OP77a. All works well and the alarms are showing on the OP77a. My problem is that when I power down the OP77a and after a while I power up, my alarm history is gone. Is there a possibility to store the alarm history on the OP77a?

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4/30/2009 7:25 AM	Rate (0)
umencho Diamond Expert Joined: 3/21/2006 Last visit: 3/30/2025 Posts: 10239 Rating: (1183)	Hello, I don't think this is possible.. For this purpose you would need from historical data... Best regards Hristo Mihalev

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4/30/2009 10:41 AM	Rate (0)
ZAK Gold Member Joined: 5/8/2006 Last visit: 10/16/2024 Posts: 1085 Rating: (78)	Hi This function supports only SIMATIC HMI panels from the 270 series. Bye

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4/30/2009 4:47 PM	Rate (1)
De vonkentrekker Member Joined: 11/26/2008 Last visit: 2/5/2025 Posts: 4 Rating: (1)	Hello, Thanks for the info. I think I make somekind of FiFo buffer in my PLC program so I can monitor the last 10 alarms who are stored inside the FiFo. Best regards.

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