Airmar PB200 - Manual (Page 37)

PB200 WeatherStation User Manual revision 1.000
Proprietary and Confidential
31
Notes
This PGN is used to specify the rules by which the PB200 decides which device on the NMEA 2000® bus is used to provide a given PGN received by the PB200.
For the PB200, this PGN is used only in relation to received PGN 128259 (speed through water).
The Rule field, field 6, is interpreted as follows:
Rule value 1: for the received PGN specified in field 5, use the device on the bus transmitting the given PGN, and having the highest priority CAN name (lowest value)
with a manufacturer code of 135, corresponding to AIRMAR Technology Corporation. If there are no Airmar devices on the bus transmitting the given PGN, then use the
device having the highest priority CAN name, regardless of its manufacturer code. This is the default behavior for all of the listed PGNs.
Rule value 2: for the received PGN specified in field 5, use the device on the bus transmitting the given PGN, and having the highest priority CAN name (lowest value)
irrespective of manufacturer code.
Rule value 3: for the received PGN specified in field 5, use the device on the bus corresponding to the CAN name specified in field 8.
Rule value 4: for the received PGN specified in field 5, use the device on the bus corresponding to the CAN name specified in field 8. If that device is not present on the
bus, or is not transmitting the given PGN, then use the device having the highest priority CAN name, regardless of its manufacturer code.
Fields 6 and 8 are stored in nonvolatile EEPROM within the PB200.
To change the Rule (field 6) to a value of 1 or 2 for PGN 128259, use the Command Group Function PGN 126208, specifying the individual fields in PGN 126720-47 as follows.
PGN 126720
Field Value
1 135 (decimal)
3 4 (decimal)
4 47 (decimal)
5 128259
6 1 or 2, as desired
Note that when changing the Rule (field 6) to 1 or 2, it is not necessary to specify field 8.
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