Blink J1939, Руководство пользователя

Страница: 9 / 16

Via Montefeltro, 6 – 20156 Milano (MI) – Italy - 9 -
Tel. +39 (02) 3088583 – Fax +39 (02) 33406697
www.blinkmarine.com – info@blinkgroup.com
FOR REFERENCE ONLY
Byte 4,7 FFh Not used
13. Set Source Address (70h)
This message is used to change the keypad CAN Source Address and/or the
Keypad Identifier. Either or both the Source Address or Keypad Identifier may be
changed independently. Connecting only one keypad to the bus when changing the
keypad address is recommended. If an invalid value is chosen, then no change is
done to the stored value.
Byte 0 04h Header bytes
Byte 1 1Bh
Byte 2 70h Set Source Address
Byte 3 XXh XX: CAN Source Address
From 01h to FDh
FEh: reserved
FFh: no change
Byte 4 YYh YY: Keypad Identifier
From 00h to FDh
FEh: reserved
FFh: no change
Byte 5,7 FFh Not used
Example:
Direction Identifier Format Message Data
To
Keypad 18EF2100h Ext 04 1B 70 18 22 FF FF
FF Source address set to
18h; keypad identifier
set to 22h.
14. Periodic key-state transmission (71h)
This message enables or disables the periodic transmission of the Key state.
When enabled, one contact state message is periodically sent for each button of the
keypad.
The period is set to 100ms as default value but can be changed through command
77h.
Byte 0 04h Header bytes
Byte 1 1Bh
Byte 2 71h Periodic state transmission
message
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 71 01 FF FF FF
FF Periodic key-state
transmission enabled
Example
Direction Identifier Format Message Data
To Keypad 18EF2100h Ext 04 1B 6F 02 FF FF FF FF Baud rate set to
500kbit/s