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Properties and technical specifications of CPU 410 SMART
15.1 CPU 410 SMART
Memory configuration
The integrated main memory of the CPU 410 SMART is 8 MB; 4 MB for programs and 4 MB
for data. This size of the load memory is 48 MB.
Time-delay interrupt OBs
The CPU 410 SMART does not support time-delay interrupt OBs (OB 2x) and no associated
SFC 32, 33 and 34. If you open one of these SFCs in the user program, it is not executed.
An error message is created instead and OB 121 is called.
If a SFC is assigned to a time-delay interrupt and downloaded to the CPU 410 SMART, the
SFC is not executed. An OB request error is reported when the configured time has elapsed.
Cyclic interrupts
The CPU 410 SMART supports the following cyclic interrupt OBs:
● OB 32 with a default run time of 2000ms
● OB 33 with a default run time of 1000ms
● OB 34 with a default run time of 500ms
● OB 35 with a default run time of 200ms
The lowest value to which you can set the run time of cyclic interrupts is 200ms. You cannot
set a phase offset.
Hardware interrupt OBs
The CPU 410 SMART does not support hardware interrupt OBs (OB 4x). If you assign a
SFC to a hardware interrupt and download it to the CPU 410 SMART, the SFC is ignored.
If you have nevertheless enabled hardware interrupts on I/O modules with interrupt capability
and a hardware interrupt is generated, it is merely entered in the diagnostics buffer and the
SFC is not executed.
Minimum cycle time of OB1
The minimum cycle time is permanently set to 200 ms and cannot be changed.
Ethernet interface X8
The second Ethernet interface X8 is designed as service interface and cannot be used as
PROFINET IO interface.
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CPU 410-5H Process Automation/CPU 410 SMART
System Manual, 10/2013, A5E32631667-AA
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