Data Logging Execution By Special Relay - Mitsubishi Electric MELSEC iQ-F FX5 User Manual
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19.4
Data Logging Execution by Special Relay
The data logging setting can be registered by the special relay and be executed on the data logging setting file stored in the
SD memory card. (Data logging operations such as start and stop can be performed without using the CPU Module Logging
Configuration Tool.)
This operation can be used together with each operation of the CPU Module Logging Configuration Tool.
Operating procedure
The following describes the procedure for executing data logging in Setting No.1 by using a special relay (SM).
1.
Write the effective setting data to the SD memory card with CPU module logging setting tool.
2.
When SM9300 (Data logging register/clear flag) is turned ON, the setting data in the SD memory card will be registered.
3.
When SM1312 (Data logging suspend/resume flag) is turned OFF, the execution of data logging will start. (Data logging
can be executed for multiple setting numbers simultaneously.)
4.
To suspend the data logging, turn ON SM1312 (Data logging suspend/resume flag). To stop the data logging, turn OFF
SM9300 (Data logging register/clear flag).
• The data logging cannot be started even when writing the setting and turning power off and on or resetting.
To start the data logging, make sure to turn ON the special relay (Data logging register/clear flag), and turn
OFF the special relay (Data logging suspend/resume).
• With regards to the trigger logging, the data logging setting registration attempt fails if the trigger condition is
satisfied.
• It takes a certain amount of time to stop or suspend the data logging after either of these commands is
issued by special relay (because the data logging is not stopped or suspended unless the data stored in the
internal buffer data has been transferred into the SD memory card in response to these commands).
• There may be a case where a time-out error occurs and the data logging is suspended after special relay
starts the logging.
Precautions
The data logging cannot be executed by the special relay for the data logging setting file stored in the data memory.
Data logging resume
When an error occurs during the data logging execution, the following operation is required to resume the data logging from
the program, etc.
Operating procedure
1.
Clear the cause of error, turn OFF the special relay (Data logging register/clear), and set the data logging status to the
disable status.
2.
After confirming the special relay (Data logging preparation) is OFF, turn ON the special relay (Data logging register/clear
flag).
3.
After confirming the special relay (Data logging preparation) is ON, turn OFF the special relay (Data logging suspend/
resume).
19 DATA LOGGING FUNCTION
166
19.4 Data Logging Execution by Special Relay
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Troubleshooting
