Blink J1939, User Manual

Page: 13 / 16

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www.blinkmarine.com – info@blinkgroup.com
FOR REFERENCE ONLY
19. Key-state message period (77h)
This message sets the period time for the PERIODIC KEY-STATE TRANSMISSION (71h).
Byte 0 04h Header bytes
Byte 1 1Bh
Byte 2 77h Key-state message period
Byte 3 XXh XX: Period in milliseconds ÷ 10
From 05h (50ms) to FEh (2.54 sec)
Byte 4,7 FFh Not used
Example:
Direction Identifier Format Message Data
To
Keypad 18EF2100h Ext 04 1B 77 3C FF FF FF
FF Period set to 600ms
20. Start Demo mode(7Ah)
This message enables the Demo mode function. Demo mode is a special feature
that consists in different LED states for each button pressing. Refer to the appendix
“Demo mode instructions” to try these special features. Disconnect and reconnect
the keypad after sending the message to enter this mode. To exit the Demo mode,
send the Disable Demo mode command or another command message.
Byte 0 04h Header bytes
Byte 1 1Bh
Byte 2 7Ah Start Demo mode
Byte 3
XXh XX:
00h Disabled (Default)
01h Enabled
Byte 4,7 FFh Not used
Example:
Direction Identifier Format Message Data
To
Keypad 18EF2100h Ext 04 1B 7A 01 FF FF FF FF Demo mode
enabled