Siemens SIMATIC ET 200SP User Manual

Functions
8.5 Protective functions for data carriers
CPU 1515SP PC (F)
Manual, 05/2017, A5E32701806-AC
77
8.5
Protective functions for data carriers
NOTICE
Data loss
The number of write cycles on CFast cards is limited due to technical reasons.
To prevent data loss, the CFast card must therefore be provided with special protection.
Use a write filter to lengthen of service life of the CFast card and avoid the
CPU 1515SP PC (F).
Write filters
Two write filters are available for Windows Embedded:
● To protect an entire partition of the CFast card, use the Enhanced Write Filter EWF
(Page 78).
Unlike FBWF, you can also use EWF with compressed NTFS data systems.
● Use the File-Based Write Filter FBWF (Page 82), to update specific files dynamically.
The FBWF can be configured more flexibly and enables direct write access without
restart.
NOTICE
Data loss
If both write filters are activated, the EWF blocks direct write access of the FBWF.
Data get lost after a restart of CPU 1515SP PC (F).
Activate
only one
of the two write filters per partition.

Siemens SIMATIC ET 200SP Specifications

General

System Type	Distributed I/O System
Mounting	DIN Rail
Communication Protocol	PROFINET, PROFIBUS
IP Rating	IP20
Category	I/O Systems
Supply Voltage	24 V DC
Modularity	Yes
Hot Swapping	Yes
Storage Temperature	-40°C to +70°C
Digital Inputs	Yes
Digital Outputs	Yes
Analog Inputs	Yes
Analog Outputs	Yes
Communication Interface	PROFINET, PROFIBUS
Number of Modules	Up to 64
Relative Humidity	5 to 95% (non-condensing)
Operating Temperature	-25°C to +60°C