Yokogawa Button Operated MV2000 - Manual (Page 36)

1-29 M-4660
Feature Overview
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App
Index
• Event Data Recording Conditions
Item Description
Channel type Same as with display data.
Sampling interval Choices are available in the range of 25 ms to 600 s. However, you
cannot choose an interval that is faster than the scan interval.
File generation A file is generated when the set data length is reached.
Files are also generated in these cases:
• When you generate a file manually.
• When there is a memory stop.
• When a file is generated using the event action function.
• After recovering from a power failure.
Modes Recording varies depending on the mode. The following modes are
available:
Free
Pressing START/STOP starts recording. Pressing START/STOP again
stops recording.
Time
File File File Adding data
Single
Pressing START/STOP puts the MV into a trigger-wait state. After a
trigger event occurs, the MV will record data for the set time (Data
length). The MV will not record again even if a trigger occurs afterwards.
Time
File
Trigger condition met
Repeat
Pressing START/STOP puts the MV into a trigger-wait state. After a
trigger event occurs, the MV will record data for the set time (Data
length). After that, the MV will return to a trigger-wait state and will
record data for the set time (Data length) whenever a trigger event
occurs. To stop the recording of event data, press START/STOP again.
Time
File File
Trigger condition met Trigger condition met
Event Data Pre-trigger
The event data pre-trigger can be configured for use with triggers.
It is a function that records the data before a trigger event as event data. It is useful for
when you want to record the data before the occurrence of an alarm or other event.
The pre-trigger is set as a percentage of the event data recording time (data length).
You can set it to 0, 5, 25, 50, 75, 95, or 100%. If you set the pre-trigger to 0%, the MV
will only record the data after the trigger event.
Time
Trigger condition met
Pre-trigger data Post-trigger data
Event Data Recording Start Triggers
You can configure a variety of conditions as triggers for starting event data recording.
Example: Key operations, alarm occurrence, time, remote control
1.5 Data Storage Functions