I/O
You can use the value status to evaluate
whether the input and output data is correct
and react accordingly in the user program in
the case of error, for example skip specific
program sequences.
In the user program you can respond quickly and
easily to faults and errors.The SIMATIC is the modular control system for numerous automation applications
in discrete automation.
The modular and fanless design, the simple implementation of distributed structures and the
user-friendly handling transform the SIMATIC into a cost-effective and convenient
solution for various tasks.
Application areas of the SIMATIC are for example:
● Special-purpose machines
● Textile machinery
● Packaging machines
● General mechanical engineering
● Controller engineering
● Machine tool engineering
● Installation engineering
● Electrical industry and crafts
● Automotive
● Water/waste water
● Food & Beverage
Application areas of the SIMATIC T are for example:
● Packaging machines
● Converting application
● Assembly automation
Several CPUs with various levels of performance and a comprehensive range of modules
with many convenient features are available. Fail-safe CPUs enable use in fail-safe
applications. The modular design allows you to use only the modules that you need for your
application. The controller can be retrofitted with additional modules at any time to expand its
range of tasks.
The high immunity to noise and high resistance to shock and vibration stress make the
SIMATIC suitable for universal use.Fail-safe CPU for
smaller to mediumsized
applications
-- 1 -- -- 1.23 MB 60 ns
CPU 1513F-1 PN Fail-safe CPU for
medium-sized applications
-- 1 -- -- 1.95 MB 40 ns
CPU 1515F-2 PN Fail-safe CPU for
medium-sized to
large applications
-- 1 1 -- 3.75 MB 30 ns
CPU 1516F-3 PN
/DP
Fail-safe CPU for
demanding applications
and communications
tasks
1 1 1 -- 6.5 MB 10 ns
CPU 1517F-3 PN
/DP
Fail-safe CPU for
demanding applications
and communications
tasks
1 1 1 -- 11 MB 2 ns
CPU 1517TF-3 P
N/DP

CPU 1518F-4 PN
/DP
CPU 1518F-4 PN
/DP ODK
Fail-safe CPU for
high-performance
applications, demanding
communications
tasks and
very short reaction
timesTechnology CPU for
small- to mediumsized
applications
-- 1 -- -- 1.23 MB 60 ns
CPU 1515T-2 PN Technology CPU for
small- to mediumsized
applications
-- 1 1 -- 3.75 MB 30 ns
CPU 1517T-3 PN
/DP
Technology CPU for
high-end applications
and communication
tasksThe compact CPUs can be used for smaller to medium-sized applications and have an
integrated analog and digital on-board I/O as well as integrated technology functions. The
following table shows the differences in performance between the two compact CPUs.
Table 2- 6 Performance overview of compact CPUsPROFIBUS interfaces -- --
PROFINET interfaces 1 1
Work memory (for program) 175 KB 250 KB
Work memory (for data) 1 MB 1 MB
Processing time for bit operations 60 ns 48 ns
Integrated analog inputs/outputs 5 inputs/2 outputs 5 inputs/2 outputs
Integrated digital inputs/outputs 16 inputs/16 outputs 32 inputs/32 outputs
High-speed counters 6 6
Pulse generators
• PWM (pulse-width modulation)
• PTO (pulse train output)
• Frequency outputThe CPUs of the SIMATIC family support Motion Control functions. STEP 7 (TIA
Portal) offers PLCopen standardized blocks for configuring and connecting a drive to the
CPU. Motion Control supports speed-controlled, positioning and synchronous axes
(synchronizing without specification of the synchronous position) as well as external
encoders, cams, cam tracks and probes.
The CPUs of theSIMATIC T support advanced Motion Co