Trigger Logging - Mitsubishi Electric MELSEC-L Series User Manual

6.3.2

Trigger logging

When trigger logging is selected, device values of the CPU module before and after a trigger (satisfaction of the
specified condition) are logged for the specified number of records. The flow of the trigger logging is shown below.
<Preparation for trigger logging>
Configure data logging settings in the configuration
tool, and write them to the CPU module.
<Start of trigger logging>
Page 62, Section 6.4 (1)
(
Start data logging by the start operation from
the configuration tool.
(
<Waiting for trigger>
Wait for the trigger condition
(
<Data sampling>
The data configured in the configuration tool are
collected and saved to an SD memory card.
<Completion of trigger logging>
Page 63, Section 6.4 (4)
(
When data of the specified number of records
are collected and written to the SD memory card,
the trigger logging is completed.
(
<Reading of trigger logging results>
Page 62, Section 6.4 (1)
(
Specify a file in the SD memory card, and
read out the data logging results.
(
:User operation
:Operation of CPU module
*1 Data logging can be resumed by performing the following from the pause status.
• Start operation from the configuration tool (
• Turning on the special relay (Data logging start)
*2 Logging data are regarded as being saved until the entire buffer data are saved in the SD memory card.
)
Page 128, Section 8.9
)
Page 59, Section 6.3.3
) to be met.
)
Page 109, Section 8.4.10
)
)
Page 128, Section 8.9
)
CHAPTER 6 DATA LOGGING FUNCTION
*1
*2
<Pause of trigger logging>
Page 62, Section 6.4 (2)
(
By the following operation, data logging pauses
with the data logging settings registered.
Pause operation from the configuration tool
Turning off the special relay (data logging start)
<Stop of trigger logging>
Page 62, Section 6.4 (3)
(
By the following operation, registration of the data
logging setting in the CPU module is cancelled.
Stop operation from the configuration tool
Page 128, Section 8.9)
)
)
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