SAFIERY STAR-SWITCH EXTERNAL Protocol
This document describes the CAN communication protocol for the CAN button operation panel. The key arrangement and corresponding key number (from A1 to B4 respectively) are shown at right: CAN protocol Refer to CAN2.0B Baud rate ： 250kBit/s Identifier ： 11bit （ Standard frame ） Description: All information in 8 bytes, BYTE0-BYTE 7, multibytes composition data low bytes first, high bytes behind Send a message (key-press message) Identifier: 0x007 (default) Cycle: During power-up, the operation panel is always sent at a 100ms cycle, but immediately when the data changes (key status changes). data:
ID
Byte0 Bit0:A1 Bit1:A2 Bit2:A3 Bit3:A4
Byte1 Bit0:B1 Bit1:B2 Bit2:B3 Bit3:B4
Byte2 0xFF
Byte3 0xFF
Byte4 0xFF
Byte5 0xFF
Byte6 0xFF
Byte7 0xFF
0x007
Description: If the value of the key when the key is pressed, the value of the key is 0. 4 Receive message (indicator light message) Receive the controller data and control the corresponding indicator light according to the received data. Identifier: 0x008 (default) period: 100ms Data: The indicator light receiving the CAN bus data control keys A1 to B4 is turned off
ID
Byte0
Byte1
Byte2
Byte3
Byte4
Byte5
Byte6
Byte7
0x008
Bit0:A1.
Bit0:A3.
Bit0:B1.
Bit0:B3.
1
1
1
1
Bit1:A1.
Bit1:A3.
Bit1:B1.
Bit1:B3.
2
2
2
2
Bit2:A1.
Bit2:A3.
Bit2:B1.
Bit2:B3.
3
3
3
3
Bit3Bac
Bit3: No definitio
Bit3:No definitio
Bit3: No definitio
klight
control enablin
n
n
n
Bit4:A4.
Bit4:B2.
Bit4:B4.
g
1
1
1
Bit4:A2.
Bit5:A4.
Bit5:B2.
Bit5:B4.
1
2
2
2
Bit5:A2.
Bit6:A4.
Bit6:B2.
Bit6:B4.
2
3
3
3
Bit6:A2.
Bit7: No definitio
Bit7: No definitio
Bit7: No definitio
3
Bit7:nc
n
n
n
data Note: 1. If the value of the corresponding bit in the data is equal to 1, the light is on; if the value is equal to 0, the light is out. 2. When the "backlight control enable" is 1, the "backlight control data" is effective, 1 backlight, 0 backlight out
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