Yokogawa DR240 - Manual (Page 204)

11-9 IM DR232-01E
Saving/Reading Measured, Computed and Set-up Data
11
Measured/computed data is read from the internal RAM disk.
Reading methods (READ MODE)
The following two methods are available.
• DIRECT
Data is read at the measurement intervals immediately after setting has been completed.
• TRIGGER
The event/action function is used to read data at the measurement intervals when an event takes
place. This function is useful when you want to compare data before an event with data after
an event.
Displaying the contents of the file
The following information of the read file is displayed.
>MODEL=EXPANDABLE
>SAMPLE= 10(Sec) TRIG DATA No.= 1
>96/07/07 00:00 LENGTH=20000
>CHANNEL=201–60
>ON 201
>ON 231
Model type on which data was saved
Number of pieces of data per channel
Data No. in effect when the trigger (event) took place
Always "1" if saving was carried out without DIRECT
or PRE TRIGGER settings made.
Date/time on which a trigger (event) took place
Saving start date/time in the case where saving was carried out in DIRECT mode
Sample rate (intervals at which data was saved)
Status of channel Nos. 201 to 230 ( : Data available, : No data available)
Status of channel Nos. 231 to 260 ( : Data available, : No data available)
Channel is changed if this digit is changed.
ENTER key
Displaying/recording the read data
To display or record the read data, it is necessary to assign the read data to computation channels
A01 to A60 using the SET menu. This assignment is still possible even if the instrument is not
equipped with the optional computation function.
Assign the following channels to computation channels A01 to A60.
• M001 to M300: Read data for measurement channels
• MA01 to MA60: Read data for computation channels
If the instrument is equipped with the computation function (/M1 model), read data can be
calculated in the same way that measured/computed data is calculated.
Like measurement channels, it is possible to make the unit, alarm, zone, partial compression, tag,
linear interpolation, dot color and recording settings for computation channels A01 to A60.
However, only the upper-limit and lower-limit alarms are available. Specify channel Nos. A01 to
A60 when specifying channel Nos.
Reading data from a floppy disk
To read data which has been copied to a floppy disk from the RAM disk, it is necessary to copy
the data from the floppy disk to the RAM disk. However, data in ASCII format cannot be read.
Status display during reading
The following status symbols are displayed in the sub-display 2 (lowest display section).
It is not possible to make media settings other than reading stop setting while measured/computed
data is being read.
M : Reading is in progress.
T : Awaiting a trigger
11.2 Reading Measured and Computed Data