Mitsubishi Electric MELSEC iQ-R Series User Manual page 20

Recording startup trigger + file saving trigger
This is a method of accumulating data for a specified period
'operating' and a recording startup trigger is satisfied.
When a file saving trigger is satisfied, data accumulated after a recording startup trigger satisfied immediately before the file
saving trigger is saved. (Page 21 File saving trigger)
A recording file is saved when a file saving trigger is satisfied.
*1 Period from when a recording startup trigger is satisfied to when a time specified for "Saving Period After Recording Startup" in the
saving period setting in the recording setting elapses
Page 55 Saving Period Setting
*2 Data is sampled when the operating status of the recording function switches to 'operating.' (Page 40 Operating status)
*3 Data accumulation stops after a specified period elapses and restarts after the recording startup trigger is satisfied again; however, the
recording startup trigger is disabled during a certain period. (Page 19 Period during which a recording startup trigger is enabled or
disabled)
(1)
(3) (4)
(a)
(b)
(1) Recording startup trigger
(2) File saving trigger
(3) Sampling data
(4) Sampling and accumulating data
(5) Time
(a) Set saving period
(b) Period during which data is not saved
(c) Period during which data is saved
(d) Period during which a recording file is saved
■Considerations
• Set the saving period to a length that can sufficiently sample and accumulate changes in data values.
• When a file saving trigger is satisfied between when a recording startup trigger is satisfied and when a specified period
elapses, data is saved to an SD memory card when it is accumulated for the specified period.
(1) (2)
(3) (4)
(a)
(b)
(1) Recording startup trigger
(2) File saving trigger
(3) Sampling data
(4) Sampling and accumulating data
(5) Time
(a) Set saving period
(b) Saving period
(c) Period during which a recording file is saved
• When switching a CPU module from RUN to STOP or stopping the operation of the recording function in the "Recording
Monitor" screen during a period from when a file saving trigger is satisfied to when a specified period elapses, data
accumulated before the stop is saved. (Page 65 RECORDING MONITOR)
• The time accuracy of a recorder module affects a set saving period and an actual one, causing an error between them. For
the time accuracy, refer to the following:
MELSEC iQ-R System Recorder User's Manual (Startup)
1 FUNCTIONS
18
1.1 Recording Function
*2,*3
(1)
(3) (4)
(a)
(c)
(3)
(c)
(5)
*1
after the operating status of the recording function switches to
(Page 19 Recording startup trigger)
(2)
(3)
(d)
(5)