11/26/2019 2:08 PM | |
Joined: 9/30/2016 Last visit: 8/15/2024 Posts: 914 Rating: (6) |
Please see attached screenshots I have a meter counter on a machine where the value is reset to 0 if the PLC is turned off and on. I need the meter counter value to be preserved. The logic was originally in a FC and I hoped it would be enough to move it into a FB with an instance DB but unfortunately this is not enough. I can see the value while the PLC is starting up but it is changed to a 0 when it is fully started. So it looks to me like the memory of the FB is working but the meter counter DB is writing a 0 into the value on my WinCC screen. I would like to write the value of the instance DB into the meter counter DB - just on the first run of the meter counter FB in the beginning of the FB. AttachmentFD2.zip (64 Downloads) |
11/27/2019 3:13 PM | |
Joined: 4/24/2006 Last visit: 9/25/2024 Posts: 8742 Rating: (1168) |
Hello, Have you seen this link: Best regards, Wizard |
This contribution was helpful to1 thankful Users |
11/27/2019 3:37 PM | |
Joined: 4/24/2006 Last visit: 9/25/2024 Posts: 8742 Rating: (1168) |
Hello, Have you seen this link: Best regards, Wizard |
This contribution was helpful to2 thankful Users |
Follow us on