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10/7/2011 11:11 AM | |
Joined: 4/24/2006 Last visit: 9/20/2024 Posts: 8742 Rating: (1168) |
Dear saeedplc, The M-memory will be zero, when the CPU starts. (Or when they are retentive, they will have the value when power fails) A Datablock can contain memory area's with an initial value (start value) One example of using Datablock, could be recipe values. Perhaps this link might help: What is the significance or the initial and actual values of a data block? What does the terms Initial value (declaration view), Initial value (load memory) and Actual value mean in data blocks when a controller is loaded / restarted? how can you back up the actual values of DBs and bit memories? Best regards, Wizard |
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