Message from slave (or alternate device)
CAN-ID – Unit Address (0x002 to 0x004)
Byte 0 – Unit Address (0x02 to 0x04)
Byte 1
Bit 0
Bit 1
Bit 2
Bit 3
Bit 4
Bit 5
Bit 6
Bit 7
Horn
Select
Morse
Select
Aft Horn
Key
Gong Key
Bell Key
Morse
Light Key
FWD
Horn Key
Auto Code
Key
Byte 2
Bit 0
Bit 1
Bit 2
Bit 3
Bit 4
Bit 5
Bit 6
Bit 7
Timer
Select
Code 1
Key
Code 2
Key
Code 3
Key
Code 4
Key
Code 5
Key
At Anchor
Key
Aground
Key
Byte 3
Bit 0
Bit 1
Bit 2
Bit 3
Bit 4
Bit 5
Bit 6
Bit 7
Alt Stbd
Key
Alt Port
Key
Astern
Key
Danger
Key
120VAC
Power Fail
Remote
Start PB
At Will
PB
Morse
Light PB
Byte 4
Bit 0
Bit 1
Bit 2
Bit 3
Bit 4
Bit 5
Bit 6
Bit 7
PA Int PB
GEA PB
Abandon
Ship PB
Unused
Unused
Unused
Unused
Unused
Key Pressed = 1, Key Released = 0
Example communication
; Message Number
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Time Offset (ms)
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Bus
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Type
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ID (hex)
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Reserved
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| Data Length Code
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Data Bytes (hex) ...
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;---+-- ------+------ +- --+-- ----+--- +- -+-- -+ -- -- -- -- -- -- --
FWD HORN
171)
5383.214 1 Rx
00000002 00 8
02 00 00 00 00 00 00 00
172)
5408.895 1 Rx
00000001 00 8
01 00 08 00 00 7B 80 2E
173)
5446.479 1 Rx
00000002 00 8
02 40 00 00 00 00 00 00 (Slave FWD Horn Key Pressed)
174)
5450.233 1 Rx
00000001 00 8
01 00 0A 00 00 7B 80 2E (Master FWD Horn Active)
MORSE KEY
102)
3206.715 1 Rx
00000002 00 8
02 00 00 00 00 00 00 00
103)
3229.197 1 Rx
00000001 00 8
01 00 08 00 00 7B 81 31
104)
3269.937 1 Rx
00000002 00 8
02 20 00 00 00 00 00 00 (Slave Morse Key Pressed)
105)
3292.291 1 Rx
00000001 00 8
01 80 08 00 00 7B 81 31 (Master Morse Active)
FWD HORN SELECT
73)
2335.323 1 Rx
00000002 00 8
02 00 00 00 00 00 00 00
74)
2335.920 1 Rx
00000001 00 8
01 00 08 00 00 7B 81 31
75)
2337.157 1 Rx
00000002 00 8
02 01 00 00 00 00 00 00 (Slave Horn Select Pressed)
76)
2399.100 1 Rx
00000001 00 8
01 00 09 00 00 7B 81 31 (Master FWD Horn LED Active)