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.
48 N OMWT-SOFT-OPC Server Data Logging | OMWT-SOFT-OPC Server |
