Siemens SIMATIC S7-400H, Системное руководство

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Assembly of a CPU 41x–H
5.6 Using memory cards
S7-400H
System Manual, 03/2012, A5E00267695-11
69
Determining memory requirements using SIMATIC Manager
You can view the block lengths offline in the "Properties - Block folder offline" dialog box
(Blocks > Object Properties > Blocks tab).
The offline view shows the following lengths:
●
Size (sum of all blocks, without system data) in the load memory of the target system
● Size (sum of all blocks, without system data) in the work memory of the target system
Block lengths on the programming device (PG/PC) are not shown in the properties of the
block container.
Block lengths are shown in "byte" units.
The following values are shown in the properties of a block:
●
Required local data volume: Length of local data in bytes
● MC7: Length of MC7 code in bytes
● Length of DB user data
● Length in load memory of the target system
● Length in work memory of the target system (only if hardware assignment is known)
The views always show these block data, regardless whether it is located in the window of
an online view or of an offline view.
When a block container is opened and "View Details" is set, the project window always
indicates work memory requirements, regardless of whether the block container appears in
the window of an online or offline view.
You can add up the block lengths by selecting all relevant blocks. SIMATIC Manager outputs
the total length of the selected blocks in its status bar.
Lengths of blocks (VATs, for example) which can not be downloaded to the target system
are not shown.
Block lengths on the programming device (PG/PC) are not shown in the Details view.
See also
Technical data of memory cards (Page 431)