Siemens SIMATIC S7-1500 CPU 1511-1 PN

Article number 6ES7511-1AL03-0AB0
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Number of DPV1 alarm OBs 3
•
Number of isochronous mode OBs 2
•
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.
256kbyte; in total; available retentive memory
for bit memories, timers, counters, DBs, and tech
nology data (axes): 216 KB
Extended retentive data area (incl. timers,
counters, flags), max.
1.5Mbyte; When using PS 6 0W 24/48/60 V DC
HF
Flag 
•
Size, max. 16kbyte
•
Number of clock memories 8; 8 clock memory bit, grouped into one clock
memory byte
Data blocks 
•
Retentivity adjustable Yes
•
Retentivity preset No
Local data 
40
CPU 1511-1 PN (6ES7511-1AL03-0AB0)
Equipment Manual, 11/2022, A5E40869673-AC
Technical specifications