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OMWT-SOFT-OPC Server Data Logging OMWT-SOFT-OPC Server
File Management
If the log rate is greater than or equal to 5 seconds, OMWT-SOFT-OPC opens and
then closes the log file each time data is logged. If the log rate is less than 5 seconds,
OMWT-SOFT-OPC leaves the file open and closes the file when OMWT-SOFT-
OPC is terminated, the log rate is set to zero, or the log rate is set to 5 or greater.
The log file can be viewed while OMWT-SOFT-OPC is logging. The other program
must not write to the file, lock the file, set the file as read only, or set the file's sharing
parameters so that OMWT-SOFT-OPC cannot log.
When processing data with another program, the best approach is to either rename
the file if the log rate is 5 or greater (OMWT-SOFT-OPC will automatically create a
new file on the next log) or make a copy of the log file. When renaming, you may
get an access error. Just try again.
The Error log file is opened and then closed whenever OMWT-SOFT-OPC writes an
error record.