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UPS user manual
Manuel de l’utilisateur de l’ASI
Utilizzo dell’UPS
OMP06263 REV. B 45
Picture 35 – Parallel rectifier information
5.5.3.1 Parallel index
The first number identifies the
position
of that specific UPS within the common battery system.
The second number represents the total number of
UPS
units.
5.5.3.2 Master / Slave priority
The string on the second line may have two values, “MASTER” or “SLAVE”. Only one
MASTER
UPS
can be present in the system; if not there will be a conflict on the data communication bus.
5.5.3.3 System status (communication bus monitoring)
This field gives a general indication regarding the communication between the UPS units
composing the system.
 The numbers represent the single UPS units.
 The letters M and S stand for MASTER and SLAVE respectively.
 The brackets [ ] around a letter indicate that we are working on that specific UPS unit.
 A question mark next to a number indicates that that UPS unit is not communicating
on the data bus.
5.5.3.4 Parallel type
The string may have two values, “POWER” or “REx”.
 POWER means that the parallel system is so set as to require the presence of all the
UPS units to feed the load.
 REx means that the system is redundant and the redundancy index is
indicated by number “X”. For example, in a system composed of 2 UPS units,
“RE1” means that only one of the UPS units is sufficient to feed the load.
5.5.3.5 Message statistics
The statistics section regarding the messages exchanged on the communication buses consists
of three different parts.
CAN STAT REC MSG0  Number of messages received and percentage of reception
accuracy regarding the synchronism signals. The messages are sent by the MASTER UPS,
therefore the number will only increase on the SLAVE UPS units.