FALCON USER GUIDE
EN2Z-0962GE51 R0715 226
2 MB / 30 / 2880 = 24
Based on the preceding calculation, external flash cards with
capacities higher than 2 MB enable you to extend the no. of trend
log objects and trend records to be saved.
IMPORTANT
Irrespective of the buffer size and the storage mode selected (internal
or external flash), it is recommended not to increase the default buffer
size. Increasing the value above 2880 results in decreased
performance when viewing and browsing trend record pages and
creates additional effort when manually downloading trend records
into a csv. file on the PC (step 21).
The maximum no. of storable trend records per download is 1550
independent of the no. of trend log objects selected. To reduce the no.
of manual downloads necessary for the total download of trend records
exceeding the max. no. of 1550, the date range can be set accordingly
(step 19).
ccc.
ddd. Select buffer type under:
• Ringbuffer
The oldest record will be overwritten by the latest record when the buffer
size is exceeded.
• Stop when full
Trending is stopped when the buffer size is exceeded.
Under Storage, the buffer location can be selected (trend logging must be
disabled):
• Compact Flash
The trend results are saved on the "external" flash card. The compact flash
is portable and allows trending of additional trend log objects with more trend
records.
• Internal Flash
The trend results are saved on the internal flash.
See previous Buffer Size Note.
eee. To clear the buffer, click the CLEAR BUFFER button.
15. Click on the General tab to define general trend settings as follows:
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