NavCom LAND-PAK Rev.N - Manual (Page 39)

Technical Reference Manual Rev. N
Blk = All; Blu = IOP w/Internal Radio ; Red = IOP & LBM ; Grn = Engine only
37
0x20 - Data request - 4 + 2 + (4 x N) bytes
Record
Usage Command - Yes
Response - No Input: Creates the output message list for the designated port; see NVRAM Storage
in previous section; Output:
Ref Message Field Description
Data
Type
Units Range Scale
Byte
Count
STX 02 (hex) U08 1
PRA1 99 (hex) U08 1
PRA2 66 (hex) U08 1
ID 20 (hex) U08 1
Length 0x00xx (variable) U16 2
W1
Command Action
B1=1: Store in NVRAM
B6=0: User NVRAM
1: Factory NVRAM
B3=1: Use Default Values
B4=1: Clear Present Output Messages
U08 1
W2 Count of Data Request Blocks U08 1
Repetitive Blocks
Wn1
Data Block ID
0x00 All Currently Active Output Messages
0x01-0xff: Individual Block ID
U08 1
Wn2
Logical Data Port Definition
B0=1: RTK / Diagnostic Port
B1=1: Control Port
B2=1: Data Port
B3=1: Network Port
B4=1: Reserved
B5=1: Log Port
B6-B7: Reserved
U08 1
Wn3
Data Rate
0x0000: Output Data Block once or Stop Output
0x0001: 2 Hz
0x0002: 5 Hz
0x0003: 10 Hz
0x0004: 25 Hz
0x0005: 50 Hz
0x0006-0x0009: Reserved
0x000a-0x1ffe: n*10 where n is inverse of data rate
0x2000: Output Data on External Trigger/ Event
0x4000: Output Data on Change.
0x80nn: Output data for SV NN (NN=0: all SVs)
U16
Hz = 1/n
2
Use the following only in conjunction with the network port
Wf7 0x71 U08 1
Wf8 0x00 U08 1
Ad-
dress
3
rd
Party Address
0x0000: Ignore This Address / Value
0xc350: Broadcast ID (50000 decimal)
Other: Radio ID of Unit to send Net Port Messages To
U16 2
CKSM Checksum U08 1
ETX 03 (hex) U08 1