BW SENSING WF-WM410, Technical Manual

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The Data part is 12 Byte, divided into four groups, namely x-axis angle, y-axis angle, temperature,
battery power. Each group of angle 4 bytes is a compressed BCD code, the first bit is the sign bit (0
positive, 1 negative), three integer values, four decimal places; temperature 3 bytes is the compressed
BCD code, the first bit is the sign bit (0 positive, 1 negative), three-digit integer value, two decimal
places; one byte of battery power.
Examples:
Send
：77 07 00000001 04 0C
Return ：77 13 00000001 84 1 000 8680 1 005 2000 0026 77 09 89
among them:
77 is the prefix Identifier;
13 is the byte length from the second digit to the last digit (decimal is 19);
00000001 is the address (factory default 00000001);
84 represents the reading angle of Command;
The last digit 89 is the hexadecimal sum (round down) from the second digit (07) to the penultimate digit (89);
1 000 8680 1 005 2000 0 026 77 09 is the data bit.
In the data bit:
1 000 8680 represents the X axis angle is -0.868 0 ；
1 005 2000 represents the angle of Y-axis is -5.2 000 ；
0 026 77 means the temperature is 26.77℃；
The battery capacity of the 09th generation battery ranges from 00 to 09. The highest power is 09 (full state)
and the lowest is 00 (needs to be charged).
The above red fonts are sign bits (0 positive, 1 negative), blue fonts are integer bits (BCD code), and purple
fonts are decimal places (BCD code).
2.4 Set relative/absolute zero Command： 77 08 00 00 00 01 05 00 0E
Identifier
(1 byte)
Frame Length
(1 byte)
Address Code
(4 byte)
Command
（1 byte)
Data
(1 byte)
Checksum
(1 byte)
0x77 0x08 0x05
0x00
Absolute zero
0x01 Relative zero
Response Command:
Identifier
(1 byte)
Frame Length
(1 byte)
Address Code
(4 byte)
Command
（1 byte)
Data
(1 byte)
Checksum
(1 byte)
0x77 0x08 0x85
0x00 Succeeded
0xFF Failed
If set to absolute zero, the measurement angle is based on the factory-set zero. If set to relative zero, the
measurement angle is based on the current position.
The factory default is absolute zero. After setting, the save command (77 07 XXXXXXXX 0A YY) must be sent to
write to the internal storage, otherwise the previously saved configuration will be restored after reset.
2.5 Query relative/absolute zero Command ：77 07 00 00 00 01 0D 15
Identifier
(1 byte)
Frame Length
(1 byte)
Address Code
(4 byte)
Command
（1 byte)
Data
(0 byte)
Checksum
(1 byte)
0x77 0x07 0x0D
Response Command:
Identifier
(1 byte)
Frame Length
(1 byte)
Address Code
(4 byte)
Command
（1 byte)
Data
(1 byte)
Checksum
(1 byte)
0x77 0x08 0x8D
0x00 Absolute zero
0xFF Relative zero
WF-WM410
WiFi Wireless High Speed High Precision Inclinometer
Bewis Sensing Technology LLC www.bwsensing.com Tel: +86 18906177922