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ALM100 User's Manual
2.5.1 Device Instance
®
NMEA 2000
provides a unique device instance for each alarm device on a vessel. This value
should be programmed in each ALM100 so that each ALM100 is associated with a unique
device instance number. The default instance number is 0, which is used to indicate the first
ALM100 that is hooked to the network. Subsequent ALM100s connected to the network would
be numbered 1, 2, and so on.
2.5.2 Label
The ALM100 may be programmed with a text label that will be displayed in monitoring software
and displays that recognize device labels, such as the Maretron N2KView Vessel Monitoring
System and the Maretron DSM250 display. The label will let you assign an easy-to-remember
text label (example: "Alarm in Pilothouse") to make it easy for you to identify the device as you
are configuring the monitoring software or display, as well as when alerts are generated.
2.5.3 Test Annunciator
Devices capable of configuring the ALM100 also have the ability to cause the ALM100 to
generate an alarm indication, flashing the red alarm LED and sounding the annunciator. You
may use this function to determine whether the ALM100 is properly connected and configured.
When you select this option, the red alarm LED and annunciator will be activated for a short
period of time.
2.5.4 Advanced Configuration...
Certain parameters do not normally need to be set in order for normal operation, but are
included in an advanced configuration section for use in special situations.
®
2.5.4.1 NMEA 2000
PGN Enable/Disable
®
The ALM100 is capable of transmitting NMEA 2000
messages (or PGNs) associated with
monitored switch circuits. You may individually enable or disable each of these messages. You
may also change the rate of transmission of each of these messages if desired.
2.5.4.2 Restore Factory Defaults
Selecting this configuration option causes all stored parameters in the ALM100 to be reset to
the values they contained when the unit was manufactured.
2.5.4.3 Installation Description...
The ALM100, along with all other Level A certified NMEA devices, has two user-programmable
installation description fields. You may program these fields with information specific to the
device, such as date installed, the initials/name of the installer, the physical location of the
device, etc. This configuration option will allow you to program the values of these fields.
3 Maintenance
Regular maintenance is important to ensure continued proper operation of the Maretron
ALM100. Perform the following tasks periodically:
Page A6
Appendix A – NMEA 2000 Interfacing
Revision 1.0
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