Master Declaration - When The Master Or Back-Up Master Breaks Down; When The Master Breaks Down - Master Declaration At The Back-Up Master - Sharp ER-A770 Instruction Manual

2. Master declaration
— when the master or back-up master breaks down
When the master or back-up master breaks down, the master declaration procedure should be
taken to inform satellites of the breakdown.
(1) When the master breaks down — Master declaration at the back-up
master
1) A satellite detects a breakdown of the master through the system retry function when it is
sending updated GLU/PBLU data to the master. At this point, the message "NO REPLY/
MASTER" appears in the pop-up window of the display.
NO REPLY/MASTER
* For the system retry function, see pages
2) The master declaration operation must be done at the back-up master. This operation
informs the other satellites that the master has broken down and the back-up master will
serve as the master hereafter. (During this process, no other operation cannot be done
at each satellite.)
3) Each satellite in the IRC system starts sending updated GLU/PBLU data to the back-up
master.
4) The back-up master processes the received data and sends back the processed data to
each satellite.
Flow of a master declaration at the back-up master
Master
1) Detection of a breakdown
48
Satellite
(Transmission stops.)
57 - 58.
2) Master
declaration
3) Updated data
4) Processed data
Master declaration
Back-up master
(Processing)