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S7-1200 CPU 1212C Data lost in DB block

Created by: YKW at: 4/28/2014 8:20 AM (2 Replies)

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4/28/2014 8:20 AM	Rate (0)
YKW Posts: 21 Rating: (0)	Hi, I have a CPU stated as above and I don't have any MC card for it. I realized the DB data lost (Back to "0" for all data) after I do a power cycle for the CPU. But I program is still inside the CPU as I just re-input again all the setpoint to the data block and the program is working again. Why the CPU can keep the program but not the data in DB block? Is there any different way of downloading program so that the DB data can be stored? *I'm using TIA V11 SP2 Thanks.
YKW Posts: 21 Rating: (0)	Last edited by: YKW at: 4/28/2014 8:28 AM
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4/28/2014 9:15 AM	Rate (0)
Wizard Diamond Member Joined: 4/24/2006 Last visit: 12/11/2024 Posts: 8781 Rating: (1172)	Hello YKW, When you open DB, is Retain option checked? Best regards, Wizard

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This contribution was helpful to 1 thankful Users YKW

4/28/2014 11:19 AM	Rate (0)
YKW Posts: 21 Rating: (0)	Thank you Wizard. After I checked the retain box everything is working fine. Thanks.
YKW Posts: 21 Rating: (0)
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This contribution was helpful to 1 thankful Users Wizard

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