Siemens SIMATIC S7-300 Module data Technical Data

Cycle and reaction times
5.5 Interrupt response time
CPU 31xC and CPU 31x, Technical data
Manual, Edition 08/2004, A5E00105475-05
5-23
Process interrupt processing
Process interrupt processing begins after process interrupt OB40 is called. Higher-priority
interrupts stop process interrupt processing. Direct I/O access is executed during runtime of
the instruction. After process interrupt processing has terminated, cyclic program execution
continues or further interrupt OBs of equal or lower priority are called and processed.
See also
Overview (Page 5-1)
5.5.2 Reproducibility of delay interrupts and watchdog interrupts
Definition of "Reproducibility"
Delay interrupt:
The period that expires between the call of the first instruction in the interrupt OB and the
programmed time of interrupt.
Watchdog interrupt:
The fluctuation width of the interval between two successive calls, measured between the
respective initial instructions of the interrupt OBs.
Reproducibility
The following times apply for the CPUs described in this manual:
• Delay interrupt: +/- 200 μs
• Watchdog interrupt: +/- 200 μs
These times only apply if the interrupt can actually be executed at this time and if not
interrupted, for example, by higher-priority interrupts or queued interrupts of equal priority.

Siemens SIMATIC S7-300 Module data Specifications

General

Series	S7-300
Manufacturer	Siemens
Protection Class	IP20
System	SIMATIC S7-300
Digital Inputs	Varies by module
Digital Outputs	Varies by module
Analog Inputs	Varies by module
Analog Outputs	Varies by module
Central Processing Unit	Varies by CPU model
Supply Voltage	24V DC or 120/230V AC
CPU Type	Varies (e.g., CPU 312, CPU 315, etc.)
Memory	Varies by CPU model
Communication Interfaces	MPI, PROFIBUS
Programming Languages	LAD, FBD, STL, SCL, GRAPH
Operating Temperature	0°C to 60°C
Storage Temperature	-40°C to 70°C
Relative Humidity	10% to 95% (non-condensing)