Bosch BIS 2.3 Installation Manual page 16

16 en | Upgrade
The system manager can now decide whether, when and which
LACs should be included in the new installation. To do this
simply check the box Connection to MAC active on the first
tab/page of each controller in the Device Editor, and then save
the changes by clicking Apply.
CAUTION!
For each LAC activated a cold start needs to be performed, i.e.
all data and programs are initially deleted and then restored
and reloaded by the MAC.
! The program is loaded very quickly but, in the case of high
volumes and/or slow network connections, the loading of data
can take up to 30 minutes. Until the LAC has received its local
copy of the data, it needs to check all access requests with the
MAC via the network. Hence delays need to be taken into
account at the relevant entrances.
Supplementary information regarding upgrades
When the LAC-MAC connection is established the MAC first
makes sure that the LAC's bootloader is compatible with the
new program. The bootloader changes much less often than the
program, so this occurence is relatively rare. If not compatible
the MAC first downloads a new bootloader to the LAC, then the
updated program and finally the access data. After the MAC has
downloaded the program the LAC is able to function by
verifying data across the network with the MAC, with some cost
to performance, until it has finished downloading its local copy
of the data.
F.01U.028.713 | V 2.3.0.1 | 2009.11 Installation manual
BIS 2.3 - Access Engine
Bosch Sicherheitssysteme GmbH