.plw data file

.plw data file

The .plw file has a fixed-length header, followed by a data record for each sample. It is terminated by a copy of the .pls file that was used to record it.

The first two-byte field of the header contains the length, in bytes, of the header. The remaining fields are as follows:

UNS16          header_bytes; - the length, in bytes, of this header

char           signature [40]; "PicoLog for Windows"

UNS32          version;

UNS32          no_of_parameters; no of parameters recorded

UNS16          parameters [250];

UNS32          sample_no; same as no_of_samples, unless wraparound occurred

UNS32          no_of_samples; number of samples recorded so far

UNS32          max_samples;

UNS32          interval; sample interval

UNS16          interval_units; 0=femtoseconds, 4=milliseconds, 5=seconds, 6=minutes, 7=hours

UNS32          trigger_sample;

UNS16          triggered;

UNS32          first_sample;

UNS32          sample_bytes; length of each sample record

UNS32          settings_bytes; length of settings text after samples (copy of .pls file)

PICODATE       start_date;

FULLTIME       start_time;

long           minimum_time;

long           maximum_time;

char           notes [1000];

long           current_time;

unsigned short stopAfter;

unsigned short maxTimeUnit;

unsigned long  maxSampleTime;

unsigned long  startTimeMsAccuracy;

unsigned long  previousTimeMsAccuracy;

unsigned long  noOfDays;

UNS8           spare [58];

Note: Do not attempt to save your data directly to a floppy disk.

Definition correct as of R5.20.1.