Appendix 57
XX = Target Data tenths digit
00 = ASCII NULL character
XX = Checksum
The GPS Parser will install the Target Data as
Rate 1. Rate 1 will continue to be impacted by
these messages even if Manual or Rate 2 is se-
lected. Once the parser installs the new rate it
will transmit the following snap shot of actual
rate, speed in MPH, and active boom width in
inches.
Snapshot Reply Message
24 = Start of Message
F1 = Channel 1 Data
13 = Data Field Size 7F = set target rate reply
XX = Current GPA/PPA Hundreds digit
XX = Current GPA/PPA Tens digit
XX = Current GPA/PPA Units digit
2E = Decimal Point
XX = Current GPA/PPA Tenths digit
00 = NULL
2C = Comma
XX = Current Ground Speed (mph) Tens digit
XX = Current Ground Speed (mph) Units digit
2E = Decimal Point
XX = Current Ground Speed (mph) Tenths digit
00 = NULL
2C = Comma
XX = Current Active Boom width (inches) Thou-
sands digit
XX = Current Active Boom width (inches) Hun-
dreds digit
XX = Current Active Boom width (inches) Tens
digit
XX = Current Active Boom width (inches) Units
digit
00 = NULL
XX = Checksum
The “current active boom width” will represent
the total width of all boom sections that are
turned on. If the Run/Hold switch is in the hold
position, the boom width returned will be zero.
2. Initialization Message (24 F0 01 01)
24 = Start of message
F0 = System Message
01 = One Character Message
01 = Initialize
Checksum = 3F
which denotes the hundreds value of the target
application rate.
Character 6 -
This will be a hex value in the
range of 30 through 39 (ASCII characters “0”
through “9”) which denotes the tens value of the
target application rate.
Character 7 -
This will be a hex value in the
range of 30 through 39 (ASCII characters “0”
through “9”) which denotes the units value of the
target application rate.
Character 8 -
This will be the hex value 2E
(ASCII “.”) denoting the decimal point separating
units and tenths of the target application rate.
Character 9 -
This will be a hex value in the
range of 30 through 39 (ASCII characters “0”
through “9”) which denotes the tenths value of
the target application rate.
Character 10 -
This will always be 00 Hex (Null)
to indicate the end of the data message.
Character 11 -
This is a single byte checksum
generated by using byte length arithmetic. The
byte values of characters 1 through 10 are add-
ed together, ignoring any carry. Their sum is then
subtracted from 55 hex ignoring any borrow
“HINIKER” Additional Messages
While the 8160 can recognize and react to the
following messages as described, they are not
required. The only message that is required for
external rate control is the external rate mes-
sage.
1. Write Channel 1 Target Rate With Snap
Shot Reply(24 F1 07 03…)
The breakdown is as follows:
24 = Start of Message
F1 = Channel 1 Data
07 = Data Field Size
03 = indicates target rate data and a requested
snapshot
XX = Target Data hundreds digit
XX = Target Data tens digit
XX = Target Data units digit
2E = decimal point
Summary of Contents for 8160
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