48 Appendix
The 8605 will transmit a Status Reply message
(shown below under Read Status Message)
in response to an initialization message. It will
claim that there are no transmission errors and
no unsatisfied read errors. No actual initializa-
tion is performed.
3. Read Status Message (24 06 02 F0 02)
24 = Start of message
06 = Read Message
02 = Two Character Message
F0 = System
02 = Status
Checksum = 37
The 8605 will transmit the following Status Re-
ply message in response to a Read Status mes-
sage. It will claim that there are no transmission
errors and no unsatisfied read errors.
Transmitted Status Reply Message
24 = Start of Message
F0 = System Data Group
03 = Data Field Size
02 = Status Data Element
00 = No Transmission Errors
00 = No Unsatisfied Read Errors
Checksum (based on no errors) = 3C
4. Read Maximum Channels (24 06 02 F0 06)
24 = Start of message
06 = Read Message
02 = Two Character Message
F0 = System
06 = Maximum Number of Channels
Checksum = 33
The 8605 will transmit a Maximum Channels Re-
ply message in response to a Read Maximum
Channels message. It will claim that it supports
a maximum of one channel.
Transmitted Maximum Channels Reply
24 = Start of Message
F0 = System Message
02 = Two Character Message
06 = Maximum Channels
01 = Maximum Channels = 1
Checksum = 38
5. Read Channel 1 Target Rate (24 06 02 F1
01)
24 = Start of message
06 = Read Message
02 = Two Character Message
F1 = Channel 1 (F1 through FA possible)
01 = Target Rate
Checksum = 37
The 8605 will transmit a Target Rate Reply mes-
sage in response to a Read Target Rate mes-
sage. It will reflect the current target rate 1.
Transmitted Target Rate Reply Message
24 = Start of Message
F1 = Channel 1 Data
07 = Data Field Size
01 = indicates target rate data
XX = Target Rate 1 hundreds digit
XX = Target Rate 1 tens digit
XX = Target Rate 1 units digit
2E = decimal point
XX = Target Rate 1 tenths digit
00 = ASCII NULL
Checksum = Undetermined
6. Read Channel 1 Actual Rate (24 06 02 F1
02)
24 = Start of message
06 = Read Message
02 = Two Character Message
F1 = Channel 1
02 = Actual Rate
Checksum = 36
The 8605 will transmit an Actual Rate Reply
message in response to a Read Actual Rate
message. It will reflect the actual rate being ap-
plied in either gallons per acre or pounds per
acre depending on which mode the controller is
in.
Transmitted Actual Rate Reply Message
24 = Start of Message
F1 = Channel 1 Data
07 = Data Field Size
02 = actual rate data
XX = Current GPA or PPA Hundreds digit
XX = Current GPA or PPA Tens digit