LVS-7500 External System Operations Manual
LVS-7500 External System Operations Manual Page 63 of 129
Match to File
This feature compares the data decoded within a sector to the data on a file created by the user. Note that the
format of the file must be a comma-separated values (CSV) file.
Any number of sectors can be set to use “match to file”. If all “Match to file” sectors are marked as “Duplicates
allowed”, the system will not be able to relocate within the data file if stopped during a run. This means the LVS-
7500 External System is not able to automatically find its place within a run on a job if stopped and restarted. If
this occurs, you must access your file and make the first number in the file be the first expected number in the
camera’s field of view after pressing the run button. The associated hash files within the job heading must be
deleted so they can be recompiled at run time.
IMPORTANT: The “Match to file” feature has associated processing overhead; thus, it is
recommended to review all your options and use the “Match to file” feature as a last resort.
You must create the file to “Match To” on a per job basis. Tools are not provided in the LVS-7500 External
System software to accomplish this.
The format of the file must be as follows:
• The format of the file must be a comma-separated values (CSV) file.
• The order in which the data is stored is matched to the sector number in lowest to highest order that has
been selected to “Match to file”.
• Headers are not allowed.
Example 1:
In the sample below, the LVS-7500 External System would expect to have two sectors per repeat that are
“Matching to File”. The file would show that it expects only 11 repeats of the label. Neither sector is expected to
have duplicates. Due to the processing overhead of “Matching to File”, the second sector could be set to perform
a sequential check instead of “Matching to File”.
01111110, 11111110
01111117, 11111111
01111120, 11111112
01111142, 11111113
01111137, 11111114
01111101, 11111115
01111129, 11111116
01111138, 11111117
01111199, 11111118
01111172, 11111119
01111122, 11111120
Example 2:
In this sample, the LVS-7500 External System would expect to have two sectors per label repeat that are
“Matching to File”. As with the above sector, only 11 repeats of the label are expected; however, this sector has
duplicates. The LVS-7500 External System has processing penalties for “Matching to File”. Thus, with this
example, it would be more cost effective to match only the first sector to a file, as the second sector can be set to
a fixed match string without the extra processing required.
01111110, 11111110
01111117, 11111110
01111120, 11111110
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