0x20 - data request - 4 + 2 + (4 x n) bytes – NavCom LAND-PAK Rev.N User 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