Siemens SIMOTION D4 5-2 Series Commissioning And Hardware Installation Manual page 102

Commissioning (hardware)
4.3 User memory concept
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 4- 7
System variable
on the device
fanbattery of the structfanbattery type (the system variables are of the enumfanbattery type)
.batterynecessary
.batteryexisting
1)
2)
102
System variable batterynecessary/batteryexisting
States
MANDATORY
OPTIONAL
OPTIONAL_RTC
NOT_MANDATORY
EXISTING
2)
NOT_EXISTING
If the SuperCap is discharged, the contents of the real-time clock (RTC) are lost.
The value for SIMOTION D4x5-2 is updated dynamically.
Description
Battery is required for the backup of the non-volatile
data and the real-time clock (RTC) of the device.
.batteryexisting can be used to query whether a battery
is available.
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 available.
Example: D4x5
A battery is not required for backing up the non-volatile
1)
data.
Only the real-time clock (RTC) is backed up via
SuperCap. 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 available.
Example: D4x5-2
A battery is not required for backing up the non-volatile
1)
data. The real-time clock (RTC) is backed up via
SuperCap.
Example: D410-2
EXISTING is only displayed when .batterynecessary is
set to:
MANDATORY or
•
OPTIONAL or
•
OPTIONAL_RTC
•
and a battery is available.
Battery is not available.
Commissioning and Hardware Installation Manual, 02/2012
SIMOTION D4x5-2