4.8.1 Using the display message change function to change messages and then issuing JP1 events
You can issue JP1 events so the user program can view the messages that have been changed by using the display message change function.
This is a compatibility function for user programs that view the JP1 events issued by JP1/IM - MO (events after a display message change) in an environment in which JP1/IM - MO is used with a version 10-50 or earlier.
The JP1 events equivalent to JP1/IM - MO (events after display message change) are issued only for those events whose display message has been changed.
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![[Figure]](GRAPHICS/CS042410.GIF)
The flow of processing is described below, following the numbers in the figure. (The numbers in the figure correspond to the numbers below.)
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Events issued by the agent are forwarded to JP1/Base on the manager host.
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JP1/IM - Manager obtains the above events.
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The display messages for the events in step 2 are changed.
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Events after display message change are issued.
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The events in step 3 are registered in the integrated monitoring database.
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JP1/IM - Manager obtains the events in step 4, and then registers them in the integrated monitoring database.
If you will be issuing events after display message change, enable the function in the environment definition file for events after the display message is changed. For details, see Environment definition file for events after the display message is changed (chmsgevent.conf) (Chapter 2. Definition Files) in the manual JP1/Integrated Management 2 - Manager Command, Definition File and API Reference.