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3. Setting Digital Switching rules
The Battery Monitor supports NMEA 2000 digital switching equipment (managed with standard PGNs
127501 and 127502). The Device can send commands to turn on/off electrical loads connected to external
NMEA 2000 two-state devices (e. g. relay banks).
The commands can be set via configuration file or Installation Description strings. In the latter case, you
will need a hardware PC-to-NMEA 2000 gateway and an appropriate software app from Yacht Devices,
ActiSense or Maretron; this is also possible on some MFDs (refer to their manufacturer documentation
for details). You can set up to three pairs (ON and OFF) of rules for each of the four parameters: voltage,
current, temperature, and state of charge. By default, all rules are set to NEVER.
3.1. Setting rules in a configuration file
You may include dedicated lines for setting Digital Switching rules in the YDBM.TXT configuration file
using the following format:
SXn_a=[c t b ch]|NEVER
where:
X – measured or calculated parameter (V – voltage in Volts, C – current in Amperes, T – temperature
in Celsius degrees, or S – state of charge in percent);
n – rule number (1..3, integer);
a – destination status of the specified Digital Switching channel, ON or OFF;
c – condition (more < or less >), comparison direction and reference parameter value, e.g. «>10
»
;
t — time period (in seconds) during which the condition must continuously occur (0..65534, integer);
b — Digital Switching bank number (0..252, integer);
ch — Digital Switching channel number (1..28, integer);
NEVER — disables the rule of a specified number and destination status.
Factory setting: NEVER
Summary of Contents for NMEA 2000 YDBM-01
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