Mitsubishi Electric MELSEC iQ-R User Manual page 115

Starting high speed continuous logging
Changing the value of 'CH1 High speed continuous logging start/stop request' (Un\G478) from Stop (0) to Start (1) starts the
high speed continuous logging on the set high speed continuous logging cycle.
At the point when data of 10000 points has been logged, the logging data storage in the continuous logging data storage
areas (A side) starts.
digit
6000
5000
3000
'CH1 Digital operation value'
(Un\G402)
'CH1 High speed continuous
logging start/stop request'
(Un\G478)
'CH1 High speed continuous
logging status monitor' (Un\G469)
'CH1 Trigger generation time'
(Un\G453 to Un\G457)
High speed continuous logging
data storage (A side)
'CH1 High speed continuous
logging data A side storage flag'
(Un\G476)
digit: Digital operation value
t: Time
T: Conversion cycle
(1) If 'CH1 Logging enable/disable setting' (Un\G535) is set to High speed continuous logging (2), the digital operation values are simultaneously updated in all
channels at intervals of 5ms.
(2)The high speed continuous logging is started within 40s after 'CH1 High speed continuous logging start/stop request' (Un\G478) is set to Start (1).
When data of 10000 points has been logged again after logging data of 10000 points was stored in the high speed continuous
logging data storage areas (A side), the new data is stored in the high speed continuous logging data storage areas (B side).
Subsequently, Logging data storage in B side completed (1) is stored in 'CH1 High speed continuous logging data B side
storage flag' (Un\G477). After that, new logging data is alternately logged into A-side areas  B-side areas  A-side areas 
by 10000 points.
• The time when high speed continuous logging was started is stored in 'CH1 Trigger generation time'
(Un\G453 to Un\G457).
• Refer to the value of 'CH1 Digital operation value' (Un\G402), which is updated every 5ms, as an indication
to check that external devices (such as sensors) are operating.
T T T T T
5000
(1)
Stop (0)
High speed continuous logging
start request waiting (1)
(2)
0
Logging data storage in A side not completed (0)
Logging data 10000 points
6000
Start (1)
High speed continuous
logging in process (2)
High speed continuous
logging start time
1.16 High Speed Continuous Logging Function
Logging data 10000 points
t
3000
Storing
Logging data storage
in A side completed (1)
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