Catalog ST PCS 7.1 - September 2005

8
Simulation
SIMIT: Simulation-based engineering
Factory Acceptance Test (FAT) of the overall plant with SIMIT
The Factory Acceptance Test (FAT) tests the complete automation
functions. The actual automation systems (SIMATIC S7 controller)
are loaded with the SIMATIC user software. SIMIT then
simulates the input/output signals, instrumentation and field devices.
The simulation values are transmitted as PROFIBUS DP
telegrams to the individual automation systems via the SIMIT interface
modules (IM-1, IM-2). The link between SIMIT and the
automation level is carried out automatically by the PCS 7 hardware
configuration. As already described for engineering on the
PC, the IEA mechanisms can also be used to automatically generate
the test environment. If SIMIT handles the process simulation
in addition, the FAT then becomes a plant test. Commissioning
can already be carried out on the virtual process in an early
phase of the project.
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PCS 7 engineering PCS 7 HMI
Signals
SIMIT
Symbol
table
User
software
Devices (IEA)
Actuators
& sensors
Process
S7-PLCSIM
Siemens ST PCS 7.1 · September 2005
Training simulation with SIMIT
In conjunction with SIMATIC PCS 7 and S7-PLCSIM, SIMIT forms
the simulation platform for a training system. Plant operators can
then be trained even before the real plant is fully functional.
The simulation models used provide a realistic plant response
under various operating conditions (e.g. start-up and shutdown,
safety-relevant shut-down, etc.). If necessary, special
simulators can also be linked to SIMIT via the standardized OPC
client/server coupling.
Additional features
Apart from the standard library, FlowNet provides a comprehensive
library for simulation of material flows in single-material systems.
Individual library components or macro components can
be created using editors. Simulation procedures can be recorded
via an appropriate operator interface and repeated exactly.
SIMIT’s scope of performance is rounded-off by animated,
user-configured graphics as well as trend windows for visualization
of simulation values.