Special Functions Simotion D410-2; Automatic Restart After Fault State - Siemens SIMOTION D410-2DP/PN Installation Manual

7.22

Special functions SIMOTION D410-2

7.22.1

Automatic restart after FAULT state

Overview
A SIMOTION D410‑2 can perform a restart automatically after the FAULT operating state has
occurred via the system variable _automaticRestart available as of V4.4.
The system variable _automaticRestart is intended for applications in which an automatic
restart is mandatory after a crash caused by an extreme situation, e.g. wind generators after
a lightning strike.
The automatic restart causes the device with the project to boot automatically from the CF
card.
Note
System variable _automaticRestart is visible on all SIMOTION CPUs, but the functionality is
only supported by SIMOTION D410‑2.
Note
Restart cannot be ensured in all cases, for example, if a hardware fault occurs.
Programming
Table 7-15
Value
16#00000000
16#00000000 < n < 16#FFFFFFFF
16#FFFFFFFF
The system variable can be set to the desired value and decrementing monitored in the user
program.
SIMOTION D410-2
Commissioning and Hardware Installation Manual, 01/2015
System variable _automaticRestart
Commissioning (software)
7.22 Special functions SIMOTION D410-2
Response
Automatic restart after FAULT state is not active
(default).
Automatic restart after FAULT state is active until
the value 0 is reached.
On a restart after FAULT state, the value is decre‐
mented by 1.
Automatic restart after FAULT state. The value re‐
mains unchanged.
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