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Mastervolt MasterBus NMEA 2000 Interface Manual

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EN / MasterBus – NMEA Interface 5
5 MASTERBUS TO NMEA
To use MasterBus information in the NMEA network,
for each variable you need to define both the NMEA
and MasterBus addresses in the configuration
screen. This way the interface is able to link
MasterBus items to NMEA 2000® PGN’s so that the
NMEA network “knows” the value of the MasterBus
variable concerned.
For defining the addresses, you need to
log in at the NMEA Interface as an
installer. Refer to the MasterView System
manual. The installer login code is
available on request.
5.1 NMEA VARIABLE
The NMEA 2000® variable consists of:
PGN (Parameter Group Number). The PGN
name appears after this number;
Applicable Instances (applications);
Fields (device variables).
Note all instances start to count at 0.
If a PGN does not have instances and you still wish
to display more than one variable, you need to add
an extra NMEA Interface. This interface can be
distinguished by means of the Device Instance
(Figure 2, point a).
5.2 MASTERBUS VARIABLE
The MasterBus variable consists of:
MasterBus Device ID (device name);
MasterBus Tab page of the selected device
(monitoring, history, alarm or configuration page
of this device);
MasterBus Index (see Figure 3).
See figure 2. The two addresses are defined in the
same screen. The interface connects these
addresses. One interface can only show one AC
instance. To show more AC instances, you need
more interfaces. Enter the Device Instance to
distinguish between these interfaces.
NMEA address
a. If more NMEA Interfaces are in the network, the Device Instance corresponds with
the NMEA Interface used. 253 interfaces can be entered, selectable from 0-252.
b. First PGN number.
Select the PGN number from the list (refer to section 6.1 for PGN names)
c. Instance name (depends on the PGN number, for PGN 127506 there is one
instance name: DC Instance).
d. Instance number (the number of the device for which the instance is shown,
selectable 0-8). In the example the DC instance of device 0 is selected.
Sub instances are selectable if available.
e. Field of PGN 1, name selectable from the list.
MasterBus address
f. MasterBus device ID,
name selectable from the list
g. MasterBus Tab page, selectable from device list.
Tabs are Monitoring, Alarm, History, Configuration
h. MB Field No is the index of the corresponding MasterBus variable, see figure 3.
i. MB Read Only: checked means NMEA cannot change a MasterBus value. NMEA
can only read from MasterBus, not write then.
j. Number of the second PGN (PGN name: section 6.1)
a
c
b
d
f
g
h
i
j
e
Figure 2: NMEA Interface configuration example and explanation
… 5 …


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