Mitsubishi Electric MELSEC iQ-R Series User Manual page 23

■Considerations
• The saving period must be set to a length sufficient to sample, receive, and accumulate changed data.
• When switching a CPU module from RUN to STOP or stopping the recording function in the "Recording Monitor" screen or
if a CPU stop error occurs in the CPU module during a saving period after trigger, data accumulated before the stop is
saved. (Page 143 RECORDING MONITOR)
• Only data after data sampling, reception, and accumulation started immediately before a file saving trigger is satisfied is
saved, and data before that is not saved.
• If the time from when data sampling, reception, and accumulation start to when a file saving trigger is satisfied is shorter
than a saving period before trigger, the total of the time and a saving period after trigger is regarded as a saving period.
(2)
(1)
(3) (4)
(5)
(6)
(a) (b)
(c)
(1) Data sampling, reception, and accumulation start
(2) File saving trigger
(3) Device and label
(4) Sampling and accumulating
(5) Video data
(6) Receiving and accumulating
(7) Time
(a) Saving period before trigger
(b) Saving period after trigger
(c) Saving period
• Due to the time accuracy of a recorder module/camera recorder module, an error occurs between a set saving period and
an actual one. For the time accuracy, refer to the following:
MELSEC iQ-R System Recorder User's Manual (Startup)
• If the communication with a network camera is disconnected before a file saving trigger is satisfied, video data accumulated
in the saving period before trigger may be saved.
(7)
1 FUNCTIONS
21
1.1 Recording Function
1