Mitsubishi Electric MELSEC-L Series - Page 63

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CHAPTER 6 DATA LOGGING FUNCTION
6
6.3 Logging Type 6.3.3 Trigger condition
(b) Step No. specification
A trigger occurs when the specified condition is met immediately before execution of the specified step. In
addition to "Step No.", set "Program name" and "Execution condition". Select an execution condition from the
following.
• Always: Any time regardless of the operation status of the specified step
• When the specified condition is ON: Any time but only during operation execution of the specified step
• When the specified condition is OFF: Any time but not during operation execution of the specified step
• When the specified condition rises: When the operation nonexecutable status of the specified step is
changed to the operation executable status
• When the specified condition falls: When the operation executable status of the specified step is changed
to the operation nonexecutable status
When the specified condition rises
A trigger occurs when the status immediately before execution of the specified step changes to the specified status.
(2) When trigger instruction executed
A trigger occurs when an instruction is executed. For instructions used for data logging, refer to Page 145,
CHAPTER 11.
(3) When data logging trigger activated
A trigger occurs when the special relay (Data logging trigger) is turned on. For the list of the special relay and
special register used for data logging, refer to Page 147, CHAPTER 12.
Ex.
Executed
Specified step
Trigger
Condition
occurred
Not executed
Executed
Not executed
Executed
Data sampling before trigger
Data sampling after trigger
Specified condition