Siemens SIMATIC KP400 Comfort Operating Instructions Manual page 211

Logs
Note
The HMI devices are suitable for the logging of relatively small volumes of data.
Manage the data in several adjacent archives in a segmented circular log. The use of a large
circular log has a negative effect on performance.
Object
Logs
The number of entries in the log may be restricted by the capacity of the storage medium.
1
Note
Data consistency
When the HMI device is switched off, consistency of the stored data is ensured only for the
SIMATIC HMI Memory Card ≥ 2 GB.
With commercially available memory cards, switching off the device may result in the loss of
saved data, for example due to a power failure.
The consistency of data stored in archives is only guaranteed if you use RDB format.
Comfort Panels
Operating Instructions, 03/2012, A5E03404994-02
Specification
Number of logs
Number of partial logs in a
segmented circular log
Entries per log
1
Filing format
Storage location
KP400 Comfort KP700 Comfort to
KP1200 Comfort
KTP400 Comfort
TP700 Comfort to
TP1200 Comfort
10
10000
CSV with ANSI character set, RDB, TXT
Memory card

USB storage medium

Network drive

Technical Support
HMI devices
KP1500 Comfort,
TP1500 Comfort to
TP2200 Comfort
50
400
20000 50000
211