Stopping The Logging Operation - Mitsubishi Electric MELSEC iQ-R Series User Manual

Stopping the logging operation

Logging operation stops (holds) when the preset trigger condition is satisfied and the set points of the data are collected.
A trigger that is generated when the condition is satisfied is called a hold trigger.
To generate a hold trigger, the following two methods are available.
Page 48 Logging hold request
Page 49 Level trigger
When a hold trigger is detected during data collection, the logging operation stops after the points of the data set in 'CH1 Post-
trigger logging points' (Un\G539) are collected.
'CH1 Logging enable/disable
setting' (Un\G535)
'Operating condition setting
OFF
request' (Y9)
ON
'Operating condition setting
completed flag' (X9)
Hold trigger
Logging hold flag
OFF
Post-trigger logging points
Set the number of data collected in the period from the detection of a hold trigger to logging operation stop to 'CH1 Post-
trigger logging points' (Un\G539).
Checking that the logging has stopped
Check that 'CH1 Logging hold flag' (Un\G409) is ON (1).
Checking data when a hold trigger has occurred
The storage location of the data when a hold trigger has occurred can be checked with 'CH1 Trigger pointer' (Un\G437). The
offset value counted from the start address of CH1 Logging data (Un\G10000 to Un\G10999) is stored in 'CH1 Trigger pointer'
(Un\G437).
Ex.
The value stored in Trigger pointer when the logging operation stops under the following conditions
• 'CH1 Post-trigger logging points' (Un\G539): 655 points
• The data location where a hold trigger has occurred: 350th data
CH1 Latest pointer = 4
CH1 Head pointer = 5
Enable (0)
ON
OFF
The data corresponding to
the points set in 'CH1 Post-trigger
logging points' (Un\G539) is
collected.
Address 0
Address 1
Address 2
Address 3
the latest
Address 4
Address 5
the oldest
Address 349
Address 350
Address 351
Address 998
Address 999
ON
CH1 Trigger pointer = 350
1 FUNCTIONS
45
1.10 Logging Function
1