Siemens SIMOTION D4x5-2 User Manual

The system variable device.persistentDataPowerMonitoring.persistentDataState
indicates the
state of the non-volatile SIMOTION data after power-up.
Table 5-6 State of the non-volatile SIMOTION data after powering up (persistentDataState system
variable)
State Meaning
FROM_RAM (1) Non-volatile SIMOTION data in the SIMOTION device is used
FROM_FILE (2) Non-volatile SIMOTION data is restored from the backup file
FROM_BACKUP (3) Non-volatile SIMOTION data is restored from the backup copy of the backup
file
INVALID (4) 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 SI‐
MOTION data and used this data to power up.
Requirement/availability of the battery
System variables can be used to evaluate:
●
Whether a battery is required for the operation of the device (or not)
● Whether a battery is available (or not)
Table 5-7 System variable batterynecessary/batteryexisting
System variable
on the device
States Description
fanbattery of data type StructDeviceFanBattery (the system variables are of the data type EnumFan‐
Battery)
.batterynecessary MANDATORY Battery is required for the backup of the non-volatile data
and for the real-time clock (RTC) of the device. .batter‐
yexisting can be used to query whether a battery is in‐
stalled.
OPTIONAL The non-volatile data and the real-time clock (RTC) are
backed up via SuperCap. A battery can be used as an
option to extend the backup time. .batteryexisting can
be used to query whether a battery is installed.
Example: D4x5
OPTIONAL_RTC
1)
A battery is not required for backing up the non-volatile
data.
Only the real-time clock (RTC) is backed up via Super‐
Cap. A battery can be used as an option to extend the
backup time of the real-time clock. .batteryexisting can
be used to query whether a battery is installed.
Example: D4x5‑2
NOT_MANDATORY
1)
A battery is not required for backing up the non-volatile
data.
The real-time clock (RTC) is backed up via Super‐
Cap.
Example: D410-2
Commissioning (hardware)
5.3 User memory concept
SIMOTION D4x5-2
Commissioning and Hardware Installation Manual, 03/2018, A5E33441636B 113

Siemens SIMOTION D4x5-2 Specifications

General

Brand	Siemens
Model	SIMOTION D4x5-2
Category	Control Unit
Language	English