Burkert Type 8620 - Manual (Page 39)

mxCONTROL Type 8620
Page 39
Stopping/cancelling of the upload process – by pressing key „EXIT“ -
makes the uploaded file incomplete and it cannot be used for a download
process.
But only at next download process appears the error message!
And if upload process was successful the display shows the notification
“Successful”.
→ Leave the submenu by pressing key “EXIT” (several times). Remove the SD
card by pressing against it.
11.3 Data Logging
The "Data Logging" function
• stores all important process values for reading, checking and archiving
• has to be activated/enabled for that functionality
• logs the data cyclically according to the set data logging sampling time "Tsample"
• logs the data event-triggered (for details refer to “Event Triggered Data Logging Function”)
Each time the internal (volatile) 512-Byte-memory is filled, its content will be attached at the end of the
datalog file on the SD card (formatted with FAT16) and will be saved then.
The Data Logging continues
• as long as the data logging function is activated
• as long as the SD card is filled - which causes an error message on the display
• as long data can be saved on the SD card - if the logged data cannot be written (anymore) to
the SD card, data logging will be stopped and a corresponding error message is shown on the
display.
The data is stored into the current log file “8620-DEV_ID-DEV_SERIAL-INDEX.log”:
with: DEV_ID device ID number (8 digits with leading zeros)
DEV_SERIAL device serial number (7 digits with leading zeros)
INDEX log file index (00001...65535) (5 digits with leading zeros)
The current log file name is displayed in the menu “Data logging\Logfile\” under the item “Current”.
The log file index “INDEX” can be increased manually by the operator in the same menu with the item
“New logfile” (CodeLevel Operator) – in this case a new log file is started.
If data logging was disabled the log file index can be adjusted (CodeLevel: Specialist); e.g. in order to
restore manually the old log file index after a firmware update or a factory reset.
The data can be selected, indicated, edited with PC and also archived externally if necessary.
The "Tsample" sample time has a factory setting of 3600 seconds.
If the selected sample time is too short, an excessive data volume will be produced and may
fill the memory capacity of the SD card very fast.
Therefore select a sample time that enables the SD card to be written with the data until the
next change of the SD card or use an SD card with higher capacity (described in next section).
A new set sample time gets active when returning to the main menu.
No Up-/Download processes on SD-Card are possible if Data Logging was active.