
SIMATIC S7-400
Central processing units
Standard CPUs
CPU 412
6/5
Siemens ST 70 · 2013
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Technical specifications (continued)
Data areas and their retentivity
Flag
•Number, max. 4 kbyte; Size of bit memory address
area
4 kbyte; Size of bit memory address
area
4 kbyte; Size of bit memory address
area
Address area
I/O address area
• Inputs 4kbyte 4kbyte 4kbyte
•Outputs
4kbyte 4kbyte 4kbyte
Process image
• Inputs, adjustable 4kbyte 4kbyte 4kbyte
• Outputs, adjustable
4kbyte 4kbyte 4kbyte
Time of day
Clock
• Hardware clock (real-time clock) Yes Yes Yes
Operating hours counter
•Number 16 16 16
1st interface
Type of interface integrated integrated integrated
Physics RS 485 / PROFIBUS + MPI RS 485 / PROFIBUS + MPI RS 485 / PROFIBUS + MPI
Functionality
•MPI Yes Yes Yes
•DP master
Yes Yes Yes
•DP slave
Yes Yes Yes
DP master
• Number of DP slaves, max. 32 32 32
2nd interface
Type of interface integrated PROFINET
Physics RS 485 / PROFIBUS Ethernet RJ45
Number of ports
2
Functionality
•DP master Yes No
•DP slave
Yes No
• PROFINET IO Controller
Yes
• PROFINET IO Device
Yes
• PROFINET CBA
Yes
DP master
• Number of DP slaves, max. 64
PROFINET IO Controller
• Max. number of connectable
IO devices for RT
256
• Number of IO devices with IRT and
the option "high flexibility"
256
• Number of IO Devices with IRT and
the option "high performance", max.
64
Isochronous mode
Isochronous operation (application
synchronized up to terminal)
Yes; For PROFIBUS only Yes; For PROFIBUS only Yes; Via PROFIBUS DP or
PROFINET interface
6ES7 412-1XJ05-0AB0 6ES7 412-2XJ05-0AB0 6ES7 412-2EK06-0AB0
CPU 412-1 CPU 412-2 CPU 412-2 PN
Kap_06_eng.book Seite 5 Donnerstag, 2. Mai 2013 4:16 16
© Siemens AG 2013
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