Siemens LOGO! Series Manual page 286

Data Log (0BA7 only)
3. You can see that a flag M1 is connected to the Data Log block L1. Press OK or
4. You can select a different element from available lists and press OK to confirm. In the
Note
LOGO! 0BA7 provides a 1024-byte buffer for data logging. If the data in this buffer
reaches 512 bytes, LOGO! automatically writes data to the SD card inserted in the SD
card slot. If the speed of data generation in LOGO! 0BA7 is faster than that of data write
to the SD card, data loss may occur. To avoid the occurrence of data loss, apply an
enable signal to the data log function block at a minimum time interval of 500 ms.
A data log file on the SD card can store a maximum of 2,000 records.
Only the most recent data log file on the SD card can be uploaded from LOGO! to
LOGO!Soft Comfort.
Under the following three circumstances, LOGO! creates a new data log file:
• When LOGO! has downloaded a circuit program configured with the data log function
• When the data log file in LOGO! is not properly closed at the time LOGO! in RUN
• When your edits to the circuit program in LOGO! influence the data log configuration
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move the cursor to "M" in "M1". Press OK. LOGO! shows the following display:
following example, you can see that this Data Log block L1 is now connected to the B3
block:
from LOGO!Soft Comfort
mode is powered off
made in LOGO!Soft Comfort
to
Manual, 04/2011, A5E03556174-01
LOGO!