Siemens SIMOTION D4x5-2 User Manual

5.3.2 Properties of the user memory
Non‑volatile data
Non‑volatile data make it possible to retain relevant data for the user and the system even
when
the SIMOTION D4x5‑2 has been switched off. Information about the area which can be
used for non-volatile data is available in the
SIMOTION D4x5‑2, Technical Data Manual.
A SIMOTION device has the following non‑volatile data:
Table 5-1 Non‑volatile data contents
Non-volatile data Content
Kernel data
● Last operating mode
●
IP parameters (IP address, subnet mask, router address)
● DP parameters (PROFIBUS DP address, baud rate)
● Diagnostic buffer
Retain variables
● Variables
in the interface or implementation section of a unit declared with
VAR_GLOBAL RETAIN
● Global device variables set with the "RETAIN" attribute
Retain TO Absolute encoder offset
DCC blocks SAV blocks and user-defined blocks with retain behavior ("SAV = SAVE",
blocks for the non-volatile data backup).
NVRAM (SINAMICS) For the SINAMICS Integrated, CX32-2 and SINAMICS S120 CU310-2/
CU320-2,
data protected against loss at power failure is called NVRAM data
or non-volatile data.
Note
DCC
SIMOTION blocks with retain behavior act like retain variables in terms of copying RAM
to ROM, resetting memory, downloading, backing up non‑volatile SIMOTION data
(_savePersistentMemoryData) and backing up data.
For the SINAMICS Integrated and CX32‑2, the data backup of the SINAMICS retain data (and
therefore also for SINAMICS DCC) is performed via the NVRAM (D4x5‑2) or the FRAM
(CX32‑2). SINAMICS data is not saved with _savePersistentMemoryData. The non-volatile
SINAMICS data (NVRAM data) is backed up by setting the CU parameter p7775 to 1.
For further information on DCC, see the DCC Programming Programming Manual.
Commissioning (hardware)
5.3 User memory concept
SIMOTION D4x5-2
Commissioning and Hardware Installation Manual, 03/2018, A5E33441636B 103

Siemens SIMOTION D4x5-2 Specifications

General

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