Sharp ER-A771 (serv.man8) User Manual / Operation Manual ▷ View online
56
(2) When the back-up master breaks down — Master declaration at the
master
1) A satellite detects a breakdown of the back-up master through the system retry function
when it is sending updated GLU/PBLU data to both the master and back-up master. At
this point, the message “NO REPLY/BACKUP” appears in the pop-up window of the
display.
NO REPLY/BACKUP
2) The master declaration operation must be performed at the master. This operation
causes the master to inform all satellites that the back-up master is not available.
3) Each satellite in the IRC system sends updated GLU/PBLU data only to the master.
4) The master processes the received data and sends back the processed data to each
satellite.
Flow of a master declaration at the master
The master declaration procedure is the same as “(1) When the master breaks down.”
1) Detection of a master breakdown
3) Updated data
Satellite
4) Processed data
(Transmission stops.)
Back-up master
Master
2) Master declaration
(Processing)
57
3. Recovery declaration — when the master
or back-up master recovers from a breakdown
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
1) The recovery declaration operation is done at the back-up master.
2) Each satellite stops sending updated GLU/PBLU data to the back-up master.
3) The back-up master sends the updated GLU/PBLU 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/PBLU data to the master and the back-up
master.
Flow of a recovery declaration at the back-up master
3) Updated data file
Satellite
4) Master
recovery
information
recovery
information
2) Transmission stops.
Master declaration
1) Recovery
declaration
operation
declaration
operation
Back-up master
Master
5) Restart of updated
data transmission
data transmission
(Processing)
58
The recovery declaration procedure is as follows:
1.
Enter the PGM2 mode from the mode selection
window.
2.
Select “DECLARATION” and press the
ENTER
key.
3.
Select “RECOVER DECLARE” and press the
ENTER
key.
59
(2) When the back-up master recovers from a breakdown — Recovery
declaration at the master
1) The recovery declaration operation is done at the master.
2) Each satellite stops sending updated GLU/PBLU data to the master temporarily.
3) The master sends the updated GLU/PBLU data files to the back-up master.
4) The master informs all satellites of the back-up master’s recovery.
5) The satellites restart sending updated GLU/PBLU data to the back-up master and
master.
Flow of a recovery declaration at the master
The recovery declaration procedure is the same as “(1) When the master recovers from a
breakdown.”
2) Transmission stops
temporarily.
temporarily.
3) Updated data file
Satellite
4) Back-up master
recovery information
recovery information
Back-up master
Master
1) Recovery declaration
5) Restart of updated data transmission
(Processing)
Click on the first or last page to see other ER-A771 (serv.man8) service manuals if exist.