Siemens SIMATIC S7-1500 Manual page 31

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•
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Nesting depth
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Timers/counters and their retentivity
S7 counters
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Retentivity
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IEC counters
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Retentivity
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S7 timers
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Retentivity
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IEC timers
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Retentivity
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Data areas and their retentivity
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Bit memory
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Data blocks
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Retentivity preset
Local data
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Address area
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CPU 1511-1 PN (6ES7511-1AK00-0AB0)
Manual, 01/2013, A5E31264526-AA
Number of asynchronous error OBs
Number of synchronous error OBs
Number of diagnostic interrupt OBs
Per priority class
Quantity
Adjustable
Quantity
Adjustable
Quantity
Adjustable
Quantity
Adjustable
Total retentive data area (including timers,
counters, bit memories), max.
Number, max.
Number of clock memories
Retentivity adjustable
Per priority class, max.
Number of I/O modules
Technical specifications
6ES7511-1AK00-0AB0
4
2
1
24
2048
Yes
Unlimited (limited only by work memory)
Yes
2048
Yes
Unlimited (limited only by work memory)
Yes
128 KB; for bit memories, timers, counters,
DBs and technological data (axes),
usable retentive memory: 88 KB
16 KB
8; 8 clock memory bits, summarized in
one clock memory byte
Yes
No
64 KB max. 16 KB per block
1024
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