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
System variable _automaticRestart
Value Response
16#00000000 Automatic restart after FAULT state is not active
(default).
16#00000000 < n < 16#FFFFFFFF 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.
16#FFFFFFFF Automatic restart after FAULT state. The value re‐
mains unchanged.
The system variable can be set to the desired value and decrementing monitored in the user
program.
Commissioning (software)
7.22 Special functions SIMOTION D410-2
SIMOTION D410-2
Commissioning and Hardware Installation Manual, 01/2015 255
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