Glossary
PROFINET with STEP 7 V15
264 Function Manual, 12/2017, A5E03444486-AH
The SIMATIC S7 automation systems know the following operating states: STOP,
STARTUP, RUN.
Organization blocks (OBs) form the interface between the CPU operating system and the
user program. The order in which the user program is executed is defined in the organization
blocks.
1. Tag of a
STEP 7 code block:
2. Tag used to set one or several characteristics of a module
In delivery state, every module has practical basic settings, which can be modified by
configuration in STEP 7.
There are static and dynamic parameters
→
Programming device
→
Programmable logic controller
Prioritized startup denotes the PROFINET functionality for accelerating the startup of IO
devices operated on a PROFINET IO system with RT and IRT communication. It reduces the
time that the correspondingly configured IO devices require in order to return to cyclic user
data exchange in the following cases:
● After the power supply has returned
● After a station has returned
● After activation of IO devices
The process image is part of CPU system memory. At the start of cyclic program execution,
the signal states of the input modules are transferred to the process image of the inputs. At
the end of cyclic program execution, the process image of the outputs is transferred to the
output modules as signal state.
→
See also System memory
To Next Page
Loading...
