Moog Crossbow GNAV540 - Manual (Page 85)

GNAV540 Use
7430‐0808‐01 Rev. B r Manual Page 85
Chapter 10. Programming Guidelines
The advanced commands allow users to programmatically change the GNAV540 settings. This section of the manual
documents all of the settings and options contained under the Unit Configuration tab within NAV‐VIEW 2.2. Using
these advanced commands, the settings of a GNAV540 unit can be modified without NAV‐VIEW 2.2.
Configuration Fields
Configuration fields determine various behaviors of the unit that can be modified by the user. These include settings
like baud rate, packet output rate and type, algorithm type, etc. These fields are stored in EEPROM and loaded on
power up. These fields can be read from the EEPROM using the RF command. These fields can be written to the
EEPROM affecting the default power up behavior using the WF command.
The current value of these fields (which may be different from the value stored in the EEPROM) can also be accessed
using the GF command. All of these fields can also be modified immediately for the duration of the current power
cycle using the SF command. The unit will always power up in the configuration stored in the EEPROM.
Configuration fields can only be set or written with valid data from Table 55 below.
Table 55 Configuration Fields
index Configuration fields Field ID Valid Values Description
1 packet rate divider 0x0001
0,1,2,4,
20, 25, 5,10,
50
quiet, 100Hz, 50Hz, 25Hz, 20
4Hz, 2Hz Hz, 10Hz, 5Hz,
2 Serial Port A BAUD rate 0x0002 0,1,2,3 9600, 19200, 38400, 57600
3 Continuous packet type 0x0003
Any output
acket type p
Not all output packets available for all
products. See detailed field descriptions
. below
4 Reserved 0x0004 N/A
5 Reserved 0x0005 N/A
6 Reserved 0x0006 N/A
7 Orientation 0x0007 See below
Determin and dow
facing sid
e forward, rightward, nward
es
8 User Behavior Switches 0x0008 Any Refer to User Behavior Switches, page 88
9 X Hard Iron Bias 0x0009 Any I2 scaled from (‐1,1)
10 Y Hard Iron Bias 0x000A Any I2 scaled from (‐1,1)
11 Soft Iron Scale Ratio 0x000B Any U2 scaled from (0,2)
12 Heading Track Offset 0x000C Any
Heading‐Track Offset to use in NAV filter track
update mode.
13 Turn Switch Threshold 0x000D
73‐65535
. ‐3 0 °/s) (0 4 6
Sets yaw rate above which tilt feedback is
attenuated.
14
ngle Soft Iron A
0x000E (‐π π)
Angle of major axis of the ellipse generated by
60 degree swing in radian 3
15 reserved 0x000F
16 hardwareStatusEnable 0x0010 Any Bit mask of enabled hardware status signals