Siemens SIMATIC S7-300 Manual page 118

Glossary
Retentive address areas
A memory area is considered retentive if its contents are retained even after a power loss
and transitions from STOP to RUN. The non-retentive area of the flags, timers and counters
is reset following a power failure and a transition from the STOP mode to the RUN mode.
Retentive can be the:
• Flags
• S7 timers
• S7 counters
• Data areas
Revision level
Differentiates products of the same order number. The product version is incremented when
forward-compatible functions are enhanced, after production-related modifications (use of
new parts/components) and for bug fixes.
Runtime error
Errors that occur during execution of the user program on the automation system (in other
words, not in the process).
S7T Config
With S7T Config you configure the technology objects required to implement your motion
control task. The STARTER for the drives from the MICROMASTER and SINAMICS families
is integrated in S7T Config.
Segment
→ Bus segment
Shutdown
What happens during shutdown?
1. The control of the Technology CPU is already in STOP mode during shutdown. The
2. The integrated inputs/outputs for integrated technology and the ET 200M on the DP
3. The integrated technology of the Technology CPU shuts down the drives on the
4. The integrated technology of the CPU then also goes into STOP. The integrated
The maximum duration of shutdown depends on your configuration in S7TConfig.
Glossary-8
outputs of the centralized and distributed I/Os are deactivated.
(DRIVE) are still active during shutdown.
PROFIBUS DP (DRIVE) in a controlled manner.
inputs/outputs for integrated technology and the ET 200M on the DP (DRIVE) are
deactivated.
S7-300 CPU Data: CPU 315T-2 DP
Manual, 12/2005, A5E00427933-02