Siemens Simantic S7-1500 - Work and Load Memory Specifications; CPU Processing Times and Block Limits

Technical specifications
CPU 1517T-3 PN/DP (6ES7517-3TP00-0AB0)
38 Manual, 12/2017, A5E36285525-AB
Article number
6ES7517-3TP00-0AB0
Work memory
• integrated (for program)
3 Mbyte
• integrated (for data)
8 Mbyte
Load memory
• Plug-in (SIMATIC Memory Card), max.
32 Gbyte
Backup
• maintenance-free
Yes
CPU processing times
for bit operations, typ.
2 ns
for word operations, typ.
3 ns
for fixed point arithmetic, typ.
3 ns
for floating point arithmetic, typ.
12 ns
CPU-blocks
Number of elements (total)
10 000; Blocks (OB, FB, FC, DB) and UDTs
DB
• Number range
1 ... 60 999; subdivided into: number range that
can be used by the user: 1 ... 59 999, and
number range of DBs created via SFC 86:
60 000 ... 60 999
• Size, max.
8 Mbyte; For non-optimized block accesses, the
max. size of the DB is 64 KB
FB
• Number range
0 ... 65 535
• Size, max.
1 Mbyte
FC
• Number range
0 ... 65 535
• Size, max.
1 Mbyte
OB
• Size, max.
1 Mbyte
• Number of free cycle OBs
100
• Number of time alarm OBs
20
• Number of delay alarm OBs
20
• Number of cyclic interrupt OBs
20; With minimum OB 3x cycle of 100 µs
• Number of process alarm OBs
50
• Number of DPV1 alarm OBs
3
• Number of isochronous mode OBs
2
• Number of technology synchronous alarm
OBs
2
• Number of startup OBs
100