Sharp UP-820N, UP-820F Recovery declaration, Flow of a recovery declaration at the back-up master

3. Recovery declaration

When the master or back-up master recovers from a breakdown, the recovery declaration operation should be taken to inform satellites of the recovery.

(1)When the master recovers from a breakdown – Recovery declaration at the back-up master

Flow of a recovery declaration at the back-up master

Master	Back-up master
	1) Recovery
	declaration
	operation
3) Updated data file
	Satellite
	4) Master
5) Restart of updated	recovery
data transmission	information
	2) Transmission stops temporarily.
	Recovery declaration

1)The recovery declaration operation is done at the back-up master.

2)Each satellite stops sending updated GLU data (and clerk data*) to the back-up master temporarily.

3)The back-up master sends the updated GLU data (and clerk data*) files to the master.

4)The back-up master informs all satellites of the master's recovery.

5)The satellites restart sending updated GLU data (and clerk data*) to the master and the IRC system returns to the normal state.

*Only for the centralized clerk file system

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