Siemens SIMATIC S7-1500 CPU 1511-1 PN

Article number 6ES7511-1AL03-0AB0
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per priority class, max. 64kbyte; max. 16 KB per block
Address area 
Number of IO modules 2048; max. number of modules / submodules
I/O address area 
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Inputs 32kbyte; All inputs are in the process image
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Outputs 32kbyte; All outputs are in the process image
per integrated IO subsystem 
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Inputs (volume) 8kbyte
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Outputs (volume) 8kbyte
per CM/CP 
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Inputs (volume) 8kbyte
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Outputs (volume) 8kbyte
Subprocess images 
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Number of subprocess images, max. 32
Hardware configuration 
Number of distributed IO systems 32; A distributed I/O system is characterized not
only by the integration of distributed I/O via
PROFINET or PROFIBUS communication modules,
but also by the connection of I/O via AS-i master
modules or links (e.g. IE/PB-Link)
Number of DP masters 
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Via CM 4; A maximum of 4 CMs/CPs (PROFIBUS,
PROFINET, Ethernet) can be inserted in total
Number of IO Controllers 
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integrated 1
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Via CM 4; A maximum of 4 CMs/CPs (PROFIBUS,
PROFINET, Ethernet) can be inserted in total
Rack 
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Modules per rack, max. 32; CPU + 31 modules
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Number of lines, max. 1
PtP CM 
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Number of PtP CMs the number of connectable PtP CMs is only lim
ited by the number of available slots
Time of day 
Clock 
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Type Hardware clock
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Backup time 6wk; At 40 °C ambient temperature, typically
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Deviation per day, max. 10s; Typ.: 2 s
Operating hours counter 
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Number 16
Clock synchronization 
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supported Yes
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Technical specifications
CPU 1511-1 PN (6ES7511-1AL03-0AB0)
Equipment Manual, 11/2022, A5E40869673-AC