NavCom LAND-PAK Rev.N User Manual
Page 107
Technical Reference Manual Rev. N
Blk = All;
Blu = IOP w/Internal Radio
;
Red = IOP & LBM
;
Grn = Engine only
105
After all sectors have been retrieved, send command 0x7e.0x0a (Close File).
Request
Record
Usage
Command - Yes
Response - No
Input: file record request, see 0x7e.0x08 first;
Output: see table below
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
7e(hex)
U08
1
Length 0xXXXX
U16
2
W1
Sub ID 0x09
U08
1
W2
0x00 (request)
U08
1
W3
File Handle
U16
2
W4
Sector Number
U32
4
W5
Spare
U08
1
CKSM Checksum
U08
1
ETX
03
(hex)
U08
1
Response
Record
Usage
Command - No
Response - Yes
Input: see table above;
Output: contains contents of requested file and sector
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
7e(hex)
U08
1
Length 0xXXXX
U16
2
W1
Sub ID 0x09
U08
1
W2
0xff (response)
U08
1
W3
Result
B0=1: Invalid file handle
B1=1: Requested sector number out of range
B2=1: Unable to read file
B7=1: Memory Mount Failure
The rest of the bytes appear only if W3 = 0
U08
1
W4
Spare
U08
1
W5
File Handle
U16
2
W6
Sector Number
U32
4
W7
Number of Bytes in W8
U32
0 - 512
4
W8
File data
U08
[512]
1[512]
CKSM Checksum
U08
1
ETX
03
(hex)
U08
1