0x1ef00), Proprietary: nmea 2000® options – Airmar PB200 User Manual
Page 34
PB200 WeatherStation User Manual revision 1.000
Proprietary and Confidential
28
NMEA 2000® TRANSMITTED PARAMETER GROUP
PGN
126720-46
(0x1EF00)
Proprietary: NMEA 2000® Options
Single Frame: No
Priority: 7/Y/N
Update Rate: 0/N/N
Destination: Address
Query Support: Yes
Access Level: 0
Field
#
Name
Request
Param. DD
DF
Type Resolution
Value
Remark
1 Manufacturer Code
Yes
DD172 DF52 11 bits
1
135 (decimal)
Manufacturer Code for Airmar Technology.
2 Reserved bits
No
DD001 DF52 2 bits
1
0x3
All bits set to logic "1"
3 Industry Group
Yes
DD168 DF52 3 bits
1
4 (decimal)
Industry Group for "Marine Industry".
4 Proprietary ID (PID)
Yes
DD005 DF53 uint8
1 bit
46 (decimal)
46 = NMEA 2000® Options
5 Transmission Interval Supersedes Measurement
Interval
No
DD003 DF52 2 bits
1
MSB/LSB:
00 = Feature Disabled
01 = Feature Enabled
10 = Reserved
11 = No action/Data Not
Available
See the text below for a description of this
feature.
This field may be changed with the Command
Group Function PGN 126208. It is saved in
EEPROM. The default value is 00 (Feature
Disabled).
6 Reserved bits
No
DD001 DF52 22 bits
1
0x3FFFFF
All bits set to logic "1"
Notes
The various types of data provided by the PB200 are sampled, or measured, at different rates, depending on the nature of the data being measured. For example, the GPS receiver
in the PB200 provides new position fix data once per second, while the wind sensor provides new data twice per second. The rate at which a given source of data is measured is
unrelated to the rate at which its corresponding PGN is transmitted. It is possible, using the Request Group Function PGN 126208, to specify a PGN transmission interval that is
faster than the corresponding measurement interval for data within the PGN.
Field 5 of this PGN allows the user to specify the behavior of the unit when PGNs are requested to be transmitted faster than the measurement intervals for data within the PGNs.
If the feature is disabled (the default case), then the measurement interval supersedes the requested transmission interval. If the feature is enabled, then the requested transmission
interval supersedes the measurement interval.
Some examples are shown below: