Data Sheet

OB
● Size, max.
200kbyte
● 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 500 µs
● Number of process alarm OBs
50
● Number of DPV1 alarm OBs
3
● Number of isochronous mode OBs
1
● Number of technology synchronous alarm OBs
2
● Number of startup OBs
100
● Number of asynchronous error OBs
4
● Number of synchronous error OBs
2
● Number of diagnostic alarm OBs
1
Nesting depth
● per priority class
24
Counters, timers and their retentivity
S7 counter
● Number
2048
Retentivity
— adjustable
Yes
IEC counter
● Number
Any (only limited by the main memory)
Retentivity
— adjustable
Yes
S7 times
● Number
2048
Retentivity
— adjustable
Yes
IEC timer
● Number
Any (only limited by the main memory)
Retentivity
— adjustable
Yes
Data areas and their retentivity
Retentive data area (incl. timers, counters, flags),
max.
128kbyte; Available retentive memory for bit memories, timers,
counters, DBs, and technology data (axes): 88 KB
Flag
● Number, max.
16kbyte
● Number of clock memories
8; 8 clock memory bit, grouped into one clock memory byte
Data blocks
● Retentivity adjustable
Yes
6ES7512-1DK01-0AB0 Subject to change without notice
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09/13/2019 © Copyright Siemens