Yokogawa Standalone MW100 - Manual (Page 227)

5-14 IM MW100-01E
Manual Sample Recording Function
Manual sample operation:
• When Manual Sample is executed using an Event/Action,
communication command, or status screen operation, the latest
measured or computed values are saved to the CF card. If a
manual sample operation is executed while writing to a manual
sample file is in progress, the operation is ignored. Also, the
manual sample file is divided when Manual Divide is executed.
• After manual sample data is recorded in backup memory
(SRAM), it is saved to the manual sample file. If the CF card
runs out of free space, data is recorded in the SRAM until
space becomes available on the card, at which point it is saved
to the file. The number of times samples can be saved to
SRAM = 2048 ÷ (no. of channels + 3). If that number of times is
exceeded, samples are overwritten (and deleted).
• The free space required on the CF card to save the manual
sample file = total file size of measured/computed/thinned files
(times 2 when Rotate is set) + 512 KB.
• When the recording action is Rotate and old files are deleted to
create new files, (when there is no free space on the CF card),
the manual sample file cannot be saved.
Special data values: When measured or computed data is special data, the manual
sample data is as shown below in the table.
Measured/
Computed Data Manual Sample Data
Notes
+OVER
Measured data: 99999
Decimal place
depends on the setting
Computed data: 99999999
–OVER
Measured data: –99999
Computed data: –9999999
INVALID,
ILLEGAL
Blank Measured values only
Number of samples: 100 samples/file
Sample channels:
Can be specified for each channel
Data format: Tab delimited text
File name: Automatically generated using the date and serial number (the
date is the file create date)
mddSnnnn.DAM
m: Month file created (local time), 1 to 9, X (October),
Y (November), Z (December)
dd: Date when file created (local time), 01 to 31
S: Fixed character
nnnn: Serial number (0000 to 9999)
DAM: Manual sample file extension (uppercase)
Maximum file size: Approximately 360 KB/file (max)
5.2 Main Module (MW100-E) Specifications