Recovery Declaration; When The Master Recovers From A Breakdown - Recovery Declaration At The Back-Up Master - Sharp UP-820F Instruction Manual

Pos terminal inter-register communication system
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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
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
58
3) Updated data file
5) Restart of updated
data transmission
1) Recovery
declaration
operation
Satellite
4) Master
recovery
information
2) Transmission stops temporarily.
Recovery declaration
Back-up master

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