MCC
http://www.zennio.com
Technical Support:
http://support.zennio.com
7
2
FUNCTIONALITY
As indicated in the introduction, the aim of this device is performing an
in-line
climate
control of multiple hotel rooms
(or any other guestrooms, such as residential rooms
or hospital rooms), where it is necessary to ensure that the system keeps running
despite of occasional device faults.
The following sections describe the different roles that the device can assume and all
the checks and notifications performed during the process.
2.1
CONFIGURATION CHECK
MCC is designed to
operate in pairs
: two MCCs with the same configuration are
recommended to simultaneously work together in the same installation. Device
redundancy is justified by how critical a fault in one of them would be, as the climate
system of several rooms depends on it. However,
it is not mandatory to install two
MCCs to make the system work
and it is possible to configure it to act as a
single
device
.
To have two devices working together properly it is necessary to configure them
identically: same parameters, group addresses and associations. It is recommended to
first configure a device and, after validating the configuration,
making an exact copy
in the ETS project
, keeping the group addresses.
The device will check that its configuration matches that of its analogue. Therefore,
after each reboot both will exchange a
checksum value
, which depends on:
Number and application program version.
Parameters.
Table of communication objects (flags and size of the communication
objects).
Group address table.
Associations table.
