Siemens SIMOTION D410 Commissioning Manual page 49

Refer to the
diagnostic buffer.
Evaluating via system variables
The system variables in the device.persistentDataPowerMonitoring structure indicate the state
of the non-volatile SIMOTION data.
Table 3-5 State of the non-volatile SIMOTION data
System variable Designation
rtcFailure Indicates that the clock
(as of V4.3) contents (RTC) are invalid
(clock must be set again)
retainDataFailure Indicates a checksum error of
(as of V4.3) the non-volatile SIMOTION
data; can be an indication of
defective hardware
persistentDataState Reading the persistent data
As of SIMOTION V4.3, a data loss of the real-time clock is signaled via the system variable
device.persistentDataPowerMonitoring.rtcFailure = YES .
The system variable device.persistentDataPowerMonitoring.persistentDataState indicates the
state of the non-volatile SIMOTION data after powering up:
Table 3-6
State
FROM_RAM (1)
FROM_FILE (2)
FROM_BACKUP (3)
INVALID (4)
Requirement for/presence of the battery (from V4.2)
System variables can be used to evaluate:
● Whether a battery is required for the operation of the device (or not)
● Whether a battery is present (or not)
SIMOTION D410
Commissioning Manual, 04/2014
SIMOTION SCOUT Configuration Manual for how to read out the contents of the
State
NO (91)
YES (173)
NO (91)
YES (173)
See the table
below
State of the non-volatile SIMOTION data after powering up (persistentDataState system
variable)
Meaning
Non-volatile SIMOTION data in the SIMOTION device is used
Non-volatile SIMOTION data are restored from the backup file
Non-volatile SIMOTION data are restored from the backup copy of the backup
file
Data in the non-volatile SIMOTION data and in the backup file / backup copy
of backup file is invalid or non-existent/deleted.
The SIMOTION device has copied the default settings to the non-volatile
SIMOTION data and used this data to power up.
Commissioning (hardware)
3.5 User memory concept
Updating
The status is updated once during power-up; the
status must be reset to "NO" via the application;
the status is retained even after power off/on.
The status is updated once during power-up; the
status must be reset to "NO" via the application;
the status is retained even after power off/on.
The status is updated during power-up.
49