Siemens SIMATIC S7-1500 Manual page 49

Article number
Data blocks
Local data
I/O address area
per integrated IO subsystem
per CM/CP
Subprocess images
Number of DP masters
Number of IO Controllers
Rack
PtP CM
CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0)
Equipment Manual, 11/2022, A5E40882737-AC
• Size, max.
• Number of clock memories
• Retentivity adjustable
• Retentivity preset
• per priority class, max.
Address area
Number of IO modules
• Inputs
• Outputs
– Inputs (volume)
Outputs (volume)
–
Inputs (volume)
–
– Outputs (volume)
Number of subprocess images, max.
•
Hardware configuration
Number of distributed IO systems
integrated
•
• Via CM
• integrated
• Via CM
• Modules per rack, max.
• Number of lines, max.
• Number of PtP CMs
Technical specifications
6ES7518-4AX00-1AB0
16 kbyte
8; 8 clock memory bit, grouped into one clock
memory byte
Yes
No
64 kbyte; max. 16 KB per block
16 384; max. number of modules / submodules
32 kbyte; All inputs are in the process image
32 kbyte; All outputs are in the process image
32 kbyte; max. 32 KB via X1; max. 8 KB via X2 or
X4
32 kbyte; max. 32 KB via X1; max. 8 KB via X2 or
X4
8 kbyte
8 kbyte
32
64; 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)
1
8; A maximum of 8 CMs/CPs (PROFIBUS,
PROFINET, Ethernet) can be inserted in total
2
8; A maximum of 8 CMs/CPs (PROFIBUS,
PROFINET, Ethernet) can be inserted in total
32; CPU + 31 modules
1
the number of connectable PtP CMs is only lim­
ited by the number of available slots
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