The highest performance for
innovative machines and plants
The new S7-400 CPUs
simatic
S7-400
If you want to leave competitors behind, you have to reliably meet the ever more sophisticated
requirements of your customers  with cost-effective solutions. For this, you can use the S7-400,
because with our innovated high-performance PLC, even ambitious aims can be achieved with
little overhead. You can integrate a host of new functions, for example, and boost the production
power of your machines or plants.
All seven CPUs of the SIMATIC® S7-400 range offer three times the processing power and 50 %
more communications power of the predecessor models. Complex arithmetic commands are pro-
cessed up to seventy times faster. And thanks to upward compatibility, you can use the new CPUs
immediately  without having to adapt your existing user programs or design documentation.
Powerful solutions for your machines and plants 
in the manufacturing and process industries
The SIMATIC S7-400 has been opti- ticular have been accelerated. These 50 % more communications power
mized both for manufacturing and can now be solved without the need
The SIMATIC S7-400 is typically used
process engineering. That s why our for additional function modules. The
as the central coordination station
high-performance PLC can be used high processing speed here applies
in plants and as a data hub linked to
system-wide for all areas of the pro- equally for all operations and not
several communications lines. In
duction chain. Our range encom- just for individual commands. In
conjunction with the new CP 443-1
passes seven graded CPUs, allowing other words, the high-performance
Advanced communications processor
you to implement solutions that are SIMATIC S7-400 CPU can be used
with integral 4-port switch, the higher
perfectly tailored to the sub-tasks in for any application you like.
data throughput supports powerful
hand. Thanks to a huge increase in
vertical integration and high-speed
More memory,
performance power, the new CPUs
PLC-PLC communication via PROFINET/
timers and counters
also enable the integration of new
Industrial Ethernet. The field level too
Along with their high processing and
functions and higher machine cycle
is efficiently connected: halved res-
communications power, our CPUs
rates  without additional PLC hard-
ponse times enable shorter cycles
feature impressive work memories,
ware costs.
down to 1 ms in isochrone operation,
increased to a maximum of twenty
in order, for example, to control fast
Processing times up to megabytes. The number of available
running machines via PROFIBUS.
seventy times faster timers and counters is now so high on
all CPUs as to be sufficient for any
The SIMATIC S7-400 is the first choice,
application in any case. You can exploit
particularly in the high-end perfor-
this increase in power to give your
mance range that is dominated by
programs a modular structure, or to
complex arithmetic functions such as
equip your machines and plants with
trigonometric functions. The innovat-
additional functions for, say, acquiring
ed CPUs stand out for their instruction
and archiving quality data, perform-
execution times which are now three
ing user-friendly process diagnostics,
to seventy times faster. Arithmetic
or integrating into higher-level MES
instructions for data processing and
solutions (manufacturing execution
closed-loop control tasks in par-
systems).
CPU 412-1 CPU 412-2 CPU 414-2 CPU 414-3 CPU 416-2 CPU 416-3 CPU 417-4
Work memory 144 KB 256 KB 512 KB 1.4 MB 2.8 MB 5.6 MB 20 MB
Instruction execution time
" Fixed-point addition 0.1 µs 0.1 µs 0.06 µs 0.06 µs 0.04 µs 0.04 µs 0.03 µs
" Floating-point multiplication 0.3 µs 0.3 µs 0.18 µs 0.18 µs 0.12 µs 0.12 µs 0.09 µs
" Complex 1.7 up to 1.7 up to 1.02 up to 1.02 up to 0.68 up to 0.68 up to 0.51 up to
arithmetic functions 7.8 µs 7.8 µs 4.68 µs 4.68 µs 3.12 µs 3.12 µs 2.3 µs
Operands
" S7 counters 2048 2048 2048 2048 2048 2048 2048
" S7 timers 2048 2048 2048 2048 2048 2048 2048
" Bit memories 4 KB 4 KB 8 KB 8 KB 16 KB 16 KB 16 KB
Integrated interfaces
" 1st interface MPI / DP (master)
" 2nd interface  DP (master)
Plug-in
interface modules    DP (master)  DP (master) 2 x DP (master)
Digital channels Sufficient for all applications
Analog channels 2048 2048 4096 4096 8192 8192 8192
www.siemens.com/simatic-s7-400
Siemens AG
SIMATIC® is a registered trademark
of Siemens. Other designations used
Automation and Drives
in this publication may be trademarks
Order No. E20001-A470-P210-X-7600
whose use by third parties for their
Printed in Germany © Siemens AG, 06/2004
own purposes could violate the rights
41C8609 MK.AS.CO.52.4.10 SB 06043. of the owners. Subject to change without prior notice
The information provided in this brochure contains merely general descriptions or characteristics of performance which in case of
actual use do not always apply as described or which may change as a result of further development of the products. An obligation
to provide the respective characteristics shall only exist if expressly agreed in the terms of contract.