1 FUNCTIONS
1.15 Event History Function
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1.15 Event History Function
This function collects generated errors, alarms or executed operations in the A/D converter module as event information in the
CPU module.
The CPU module collects the event information caused in the A/D converter module and keeps them in the data memory
inside of the CPU module or an SD memory card.
The event information collected by the CPU module can be displayed on an engineering tool to check the occurrence history
in a time series.
Setting procedure
The event history function can be set from the event history setting window of the engineering tool. For the setting method,
refer to the following.
MELSEC iQ-R CPU Module User's Manual (Application)
Displaying event history
Access to the menu window of the engineering tool. For details on the operating procedure and how to view the contents,
refer to the following.
GX Works3 Operating Manual
List of event history data
The following table lists the events that would occur in the A/D converter module when the event type is set to "Operation"
Event type Classification Description
System Error An error detected by the self diagnostics in each module.
Warning A warning (alarm) detected in each module.
Information The operation by the normal detection of the system that is not classified as Error or Warning, or the operation
performed automatically by the system.
Security Warning Operation that is judged as an unauthorized access to each module.
Information Operation that is hard to be judged as the success of unlocking passwords or an unauthorized access.
Operation Warning Deleting (data clear) operations that may change the action. (These operations are not judged as errors by the
self diagnostics.)
Information Operations performed by users to change the system operation or configuration in the offset/gain setting.
Event
code
Event class Event name Event detail Additional information
20010 Information Offset/gain setting execution In the user range setting, offset/gain values has
been set.
Total number of writes
20100 Information Error clear Error clear request has been issued.
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