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assign the attribute (S7_m_c) for the 4th byte of each structure

Created by: Saravana kumar at: 5/27/2011 8:06 PM (1 Replies)

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5/27/2011 8:06 PM	Rate (0)
Saravana kumar Gold Member Joined: 2/6/2009 Last visit: 4/19/2023 Posts: 932 Rating: (117)	Hi, In my project there is a DB (shared) in which I have called a UDT (of 60 Byte) for 120 times. I want to assign the attribute (S7_m_c) for the 4th byte of each structure. But it allows me to select the attribute for the whole structure only. Is there any solution for this issue. Splitted from S7_M_C attributes for FB125.
	Last edited by: O_Moderator at: 5/30/2011 8:01 AM new subject after splitting _______________________________________________________________ Best Regards T.Saravana Kumar "All for the Best"
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5/30/2011 6:21 PM	Rate (0)
Aret Posts: 2348 Rating: (259)	Bad news from S7-help: From STEP 7 version 3, system attributes and user-defined attributes can be assigned to parameters within a project. These can only be assigned to: · Parameters (variables which are not components of a structure) of the IN, OUT, IN_OUT section or · The immediate components of a shared data block. --------------------------- UDT is a structure (user-defined, but nevertheless). If you can mark whole Var_X: UDT with s7_m_c, then do it and use only 4th byte afterwards
Aret Posts: 2348 Rating: (259)	Last edited by: Aret at: 5/30/2011 6:23 PM
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