SIMATIC S7-400
Central processing units
Fail-safe CPUs
CPU 414F
6/26
Siemens ST 70 · 2013
■
Overview
• For constructing a fail-safe automation system for plants with
increased safety requirements
• CPUs for high demands in the mid-level performance range
• Applicable for plants with additional demands on
programming scope and processing speed
• Satisfies safety requirements up to SIL 3 acc. to IEC 61508
and Cat. 4 acc. to EN 954-1
• Standard and safety-related tasks can be performed with a
single CPU
• Integrated PROFINET functions in CPU 414F-3 PN/DP
• Multi-processor mode is possible
• Safety-related communication with distributed I/O devices
over PROFIBUS DP or PROFINET IO with PROFIsafe profile
• Fail-safe I/O modules can be connected in a distributed
manner via the integrated interfaces (DP and PN with
CPU 416F-3 PN/DP) and/or through communication modules
(CP 443-5 Extended and CP 443-1 Adv.)
• Central and distributed use of standard modules for
non-safety-oriented applications
■
Technical specifications
6ES7 414-3FM06-0AB0
CPU 414F-3 PN/DP
General information
Engineering with
• Programming package STEP7 V5.5 or higher/iMap V3.0 +
iMap STEP7 Add-on V3.0 SP5 or
higher
Supply voltage
24 V DC No; Power supply via system
power supply
Power losses
Power loss, typ. 6.5 W
Memory
Work memory
• integrated 4Mbyte
• integrated (for program)
2Mbyte
• integrated (for data)
2Mbyte
Load memory
• expandable FEPROM, max. 64 Mbyte
• integrated RAM, max.
512 kbyte
• expandable RAM, max.
64 Mbyte
CPU processing times
for bit operations, typ. 45 ns
for word operations, typ.
45 ns
for fixed point arithmetic, typ. 45 ns
for floating point arithmetic, typ.
135 ns
Counters, timers and
their retentivity
S7 counter
•Number 2 048
IEC counter
• present Yes
S7 times
•Number 2 048
IEC timer
• present Yes
Data areas and their retentivity
Flag
•Number, max. 8 kbyte; Size of bit memory
address area
Address area
I/O address area
• Inputs 8kbyte
•Outputs
8kbyte
Process image
• Inputs, adjustable 8kbyte
• Outputs, adjustable
8kbyte
Time of day
Clock
• Hardware clock (real-time clock) Yes
Operating hours counter
•Number 16
6ES7 414-3FM06-0AB0
CPU 414F-3 PN/DP
Kap_06_eng.book Seite 26 Donnerstag, 2. Mai 2013 4:16 16
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