Technical data
5
5.1 Technical data D4x5
Memory for system data   
Table 5-1
Memory for system data and its memory size
Data SIMOTION D425 
memory size
SIMOTION D435 
memory size
SIMOTION D445/
D445‑1 memory size
Diagnostic buffer (non-
volatile)
200 messages 
(SIMOTION)
200 messages 
(SINAMICS Integrated)
200 messages 
(SIMOTION)
200 messages 
(SINAMICS Integrated)
200 messages 
(SIMOTION)
200 messages 
(SINAMICS Integrated)
RAM (working 
memory) 
1)
48 MB (as of V4.2)
35 MB 
(V4.1 SP2 - V4.1 SP5)
25 MB (V4.1 SP1)
48 MB (as of V4.2)
35 MB 
(V4.1 SP2 - V4.1 SP5)
25 MB (V4.1 SP1)
96 MB (as of V4.2)
70 MB 
(V4.1 SP2 - V4.1 SP5)
50 MB (V4.1 SP1)
RAM disk (load 
memory)
29 MB (as of V4.3)
23 MB (as of V4.1 SP2)
17 MB
29 MB (as of V4.3)
23 MB (as of V4.1 SP2)
17 MB
59 MB (as of V4.3) 
2)
47 MB (as of V4.1 SP2)
23 MB
Retentive memory 364 KB  364 KB  364 KB 
Persistent memory 
(user data on CF)
1-GB CF: 300 MB 1-GB CF: 300 MB 1-GB CF: 300 MB
1)
For Java applications, a dedicated 20-MB working memory will be available as of V4.1 SP1 HF6. 
2)
Only D445‑1; D445 is no longer supported by V4.2.
CompactFlash card
Table 5-2 CF card
Memory capacity 1 GB (order no. 6AU1400‑2PA0*‑0AA0)
512 MB (order no. 6AU1400‑2NA00‑0AA0)
64 MB (order no. 6AU1400‑2KA0*‑0*A0)
32 MB (order no. 6AU1400‑2JA0*‑0*A0)
Weight 10 g
With CompactFlash cards, SIMOTION versions up to and including V4.1 SP1 incl. hotfixes 
support a memory address of max. 512 MB. The limitation applies whether the card is being 
used by SIMOTION runtime functions or for some other purpose, such as storing documents.
Once there is more than 512 MB of data on the CompactFlash card, the card is full as far as 
SIMOTION runtime is concerned, i.e.:
SIMOTION D4x5
Manual, 04/2014 65