Mitsubishi MELSEC iQ-F, User Manual

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4 FUNCTIONS
4.13 Logging Function
■
When the logging function becomes disabled
The logging is not performed when even one of the following errors occurs after the logging function is enabled and 'Operating
condition setting request' (Un\G70, b9) is turned off
→
on
→
off.
• ‘CH1 Time Average/Count Average/Moving Average’ (Un\G502) setting error: Error code (192  H to 194  H)
• Logging function setting error: Error code (1D0  H to 1D6  H)
When 'Operating condition setting request' (Un\G70, b9) is turned off → on → off on the condition that the
logging cycle determined by 'CH1 Logging cycle setting value' (Un\G537) and 'CH1 Logging cycle unit setting'
(Un\G538) is shorter than the conversion cycle, an error occurs and logging does not start. A logging cycle
setting disable error (error code: 1D2
 H) is stored in 'Latest error code' (Un\G0), 'Error flag' (Un\G69, b15)
and the ERROR LED turn on.
■
Number of logging data
With 'CH1 Number of logging data' (Un\G436), the number of valid data in 'CH1 Logging data' (Un\G10000 to Un\G19999)
can be checked.
• When the number of collected data points is less than 10000
• When the number of collected data points is 10001 or greater
The number of logging data increases by one each time new data is stored.
When CH1 Logging data (Un\G10000 to Un\G19999) becomes full (Number of logging data = 10000), the next data is stored
in the head address of CH1 Logging data (Un\G10000 to Un\G19999), and the logging operation continues overwriting the
existing data. In this case, the number of logging data is fixed to 10000.
Valid data
Invalid data
(Data stored in these areas are not reliable.)
Address 0
Address 1
Address 2
Address 3
Address 4
Address 5
Address 9998
Address 9999
CH1 Number of logging data = 5
Address 0
Address 1
Address 2
Address 3
Address 4
Address 5
Address 9998
Address 9999
Valid data
CH1 Number of logging data = 10000