Mitsubishi Electric MELSEC iQ-R Series User Manual page 62

Recording buffer
A sampled device and label are accumulated in the internal buffer (recording buffer) of a recorder module/camera recorder
module.
In addition, received video data is accumulated in the internal buffer (recording buffer) of a camera recorder module.
Accumulated data is output to a save destination specified in the recording setting as a recording file when a file saving trigger
is satisfied.
The recording buffer capacity can be set for each recording setting, and a period during which data can be saved differs
depending on the capacity. (Page 98 Recording buffer setting (recorder module), Page 99 Recording buffer setting
(camera recorder module))
■When the capacity of accumulated devices and labels exceeds the buffer capacity
Data for a set saving period may not be saved.
In this case, perform any of the following operations:
• Reduce the number of devices and labels to be sampled.
• Increase the recording buffer capacity.
• Shorten the saving period.
• Lengthen the sampling interval.
An operation when the buffer capacity is exceeded differs depending on the recording method as follows:
• When selecting "File Saving Trigger Only" for the recording method
Data is overwritten in chronological order when the buffer capacity is exceeded.
In addition, if the data capacity for a set saving period exceeds the recording buffer capacity, old data in the saving period is
not saved.
(1)
(2)
(a)
(c)
(d)
(e)
(1) File saving trigger
(2) Accumulating data
(3) Time
(a) Saving period before trigger
(b) Saving period after trigger
(c) Period during which data is accumulated in the recording buffer
(d) Period during which data is not saved
(e) Period during which data is actually saved
1 FUNCTIONS
60
1.1 Recording Function
(b)
(3)