Siemens SIMATIC S7-300 Manual For Migrating page 56

5 Software Conversion
Table 5-10
Block type
DB
OB
FB
FC
Memory card
Symbolic
The TIA Portal works fully on symbolic level. The user does not have care about
the numbering of their blocks.
Through the continuous framework of the TIA Portal, the tags that have been
created in STEP 7 can be used in the visualization part. Symbolic programming
facilitates the handling and readability but also the maintenance of the program.
Elements/tags, e.g., from the devices & networks view can be directly dragged into
the program via drag-and-drop.
A symbol table as in STEP 7 V5.x no longer exists in the TIA Portal. Symbols only
mean PLC tags here and are summarized in the tag table. The user can divide
them in partial groups for logical grouping.
Note
In the TIA Portal what was previously known as tag tables are now watch tables.
Migration S7-300/S7-400 nach S7-1500
Entry ID: 109478811, V1.1,
S7-300/S7-400
64 Kbyte
64 Kbyte
64 Kbytes
64 Kbytes
Up to 8 Mbyte/up to 64
Mbyte
05/2017
S7-1500
Optimized up to 10Mbyte (depending
on the CPU type), non-optimized
64kbyte
Optimized up to 512kbyte, depending
on the CPU type
Optimized up to 512kbyte, depending
on the CPU type
Optimized up to 512kbyte, depending
on the CPU type
Up to 32 Gbyte
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