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HCM705B

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High Accuracy Gyro Compass

68 05 00 47 00 4C

01

Calibration has HPR data output

0XC7

Sensor answer reply command
E.g: 68 05 00 C7 00 CC

Data domain

1byte

,

Data domain in the number means the sensor response
result
00 Success

FF Failure

0X48

Choose specific parameters
command

this command usually

don’t need customers operation

E.g

68 07 00 48 02 05 18 6E

Choose HEADING and PITCH

Data domain

1-10byte

Byte4 : Choose the number of parameters

BYTE5~BYTE

14: Parameter ID

number optional

05: heading

18H:PITCH

19H:ROLL

15H:AccelX

16H:AccelY

17H: AccelZ

1BH:MAGX

1CH:MAGY

1DH:MAGZ

4AH:GyroX

4BH:GyroY

4BH:GyroZ

0XC8

Sensor answer reply command
E.g: 68 05 00 C8 00 CC

Data domain

1byte

,

Data domain in the number means the sensor response
result
00 Success

FF Failure

0X14

Read specific parameter data
command ( this command can be
used after OX48 command be
used )
68 04 00 14 18

Data domain

0byte

0X94

Sensor answer reply command
E.g: 68 YY 00 94 XX ID1 DA1
DA2 DA3 DA4 ID2 DB1 DB2
DB3 DB4 ....

CE

Data domain

5-46byte

,

Data domain in the number means the sensor response
result
BYTE4: XX ; Read the number of parameter

BYTE5:corresponding the paramterID number

ParameterID number as below

05: heading

18H:PITCH

19H:ROLL

15H:AccelX

16H:AccelY

17H: AccelZ

1BH:MAGX

1CH:MAGY

1DH:MAGZ

4AH:GyroX

4BH:GyroY

4BH:GyroZ

DA1,DA2,DA3,DA4 is FLOAT 32 the big end of data
storage mode

ParameterID

1BYTE

+ Floating-point number

data(4BYTES) indicate one group number.

0X49

The reference magnetic reset

command

68 04 00 49 4D

Data domain

0byte

0XC9

Sensor answer reply command
E.g:68 05 00 C9 00 CE

Data domain

1byte

,

Data domain in the number means the sensor response
result
00 Success

FF Failure

0X4B

Module reset command

68 04 00 4B 4F

Data domain

0byte

The module to reset

0XCB

Sensor answer reply command

:68 05 00 CB 00 CE

Data domain

1byte

,

Data domain in the number means the sensor response
result
00 Success

FF Failure

Summary of Contents for HCM705B

Page 1: ...01 Tilt sensor production standards GB T 191 SJ 20873 2003 inclinometer general specification of Level Gyro accelerometer test standard QJ 2318 92 Gyro accelerometer test methods Software development...

Page 2: ...M705B with small volume low power consumption can be applied in antenna stable vehicles systems integration and many other fields high shock resistance and high reliability make compass work normally...

Page 3: ...5 Measuring range 0 1 30 Measuring range 0 1 60 Measuring range 0 2 180 Measuring range Roll tilt range 180 Resolution 0 1 Calibration Hard iron calibration Yes Soft iron calibration Yes Magnetic fiel...

Page 4: ...iron magnets engines and other magnetic objects as much possible as you can Need control over 30CM distance different magnetic interfere the compass in different distance at least even there are these...

Page 5: ...ic material then proceed with heading accuracy measurement of course the rotating rod perpendicular to the rotating platform as much as possible to avoid large external magnetic field interference Doi...

Page 6: ...HCM705B High Accuracy Gyro Compass Dimension Size L W H 94 31 24MM...

Page 7: ...use about 2 seconds the internal CPU automatically calculate just sampling data after the calculation will return a set of data is the percentage value of the data just gain 5 Then send the save calib...

Page 8: ...ic level about 90 to change do not require too precise Example as left Pic A starting point for H 0 R 0 P 15 firstly calibrate the pitch value P please keep this posture for 2 to 3 seconds don t move...

Page 9: ...will take the thirteenth point After took the thirteenth point again rotate 90 horizontally please keep this posture for 2 to 3 seconds don t move the system will take fourteenth point After took the...

Page 10: ...point After took the twenty third point again rotate 90 horizontally alternate the negative Roll value R 55 please keep this posture for 2 to 3 seconds don t move the system will take the twenty fourt...

Page 11: ...e calibration Click this button keep the compass shaking state to avoid incorrect calibration of the acquisition Save stop calibration and save data Specific calibration method please refer to this sp...

Page 12: ...etting failure 0X07 Read declination command 68 04 00 07 0b Data domain 0byte No Data domain command 0X87 Sensor answer reply E g 68 06 00 87 02 08 97 Data domine 2byte Data domain in the number means...

Page 13: ...uccess FF Failure 0X0C Setting angle output mode 68 05 00 0C 00 11 Data domain 1byte 00 answer reply mode 01 Auto output mode Default answer reply mode 0X8C Sensor answer reply command E g 68 05 00 8C...

Page 14: ...node must send one time 0X88 Sensor answer reply command 68 05 00 88 xx cs Data domain 1byte Data domain in the number means the sensor response result xx 0 18 00 0 point 01 1 point 02 2 points 0F 15...

Page 15: ...and be used 68 04 00 14 18 Data domain 0byte 0X94 Sensor answer reply command E g 68 YY 00 94 XX ID1 DA1 DA2 DA3 DA4 ID2 DB1 DB2 DB3 DB4 CE Data domain 5 46byte Data domain in the number means the sen...

Page 16: ...Data domain 1byte Data domain in the number means the sensor response result 00 Success FF Failure 0X50 Set the geomagnetic threshold judgment command 68 06 00 50 24 16 CS Data domain 2byte MAX BYTE4...

Page 17: ...ess Default is 00 Command word Fixed 84 Pitch angle The first byte is the sign bit 00 is positive angle 10 is negative angle The second byte is the integer bit Is compressed BCD code The third byte is...

Page 18: ...HCM705B High Accuracy Gyro Compass...

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