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参数资料
| 型号： | HMR2300R-485 |
| 厂商： | Honeywell Microelectronics & Precision Sensors |
| 文件页数： | 5/8页 |
| 文件大小： | 0K |
| 描述： | MAGNETOMETER RS485 3 AXIS |
| 产品培训模块： | Magnetic Sensors |
| 标准包装： | 1 |
| 系列： | HMR |
| 轴： | X，Y，Z |
| 测量范围： | ±2 高斯 |
| 用于测量： | 磁场强度，方向 |
| 分辨率： | 67 µ高斯 |
| 类型： | 数字磁力计 |
| 封装/外壳： | 模块（无外壳） |
| 接口： | RS-485 |
| 配用： | 342-1012-ND - KIT DEVELOP MAGNETOMETER RS232 |
| 其它名称： | 342-1020 |
HMR2300r
DATA FORMATS
The HMR2300 transmits each x, y, and z axis as a 16-bit
value. The output data format can either be 16-bit signed
binary (sign + 15-bits) or binary coded decimal (BCD) ASCII
characters. The command *ddA will select the ASCII format
and *ddB will select the binary format.
The Validity byte indicates that the onboard microproces-
sor has properly executed code routines for the selected
mode of operation. The various user selectable modes are
shown in the table below with the corresponding validity
byte and associated ASCII character.
The order of output for the binary format is: Xhi, Xlo, Yhi,
Ylo, Zhi, Zlo. The binary format is more efficient for a com-
puter to interpret since only 9 bytes are transmitted. The
BCD ASCII format is easiest for user interpretation but re-
quires 28 bytes per reading. There are limitations on the
sample rate based on the format and baud rate selected
(see Table 3). Examples of both binary and BCD ASCII out-
puts are shown below for field values between ± 2 Gauss.
Zero
Readings
off
off
off
off
on
on
on
Average
Readings
off
off
on
on
off
off
on
Auto
Set/Reset
off
on
off
on
off
on
off
Validity
Character byte
O 4F
S (1) 53
O 4F
V 56
P 50
T 54
P 50
Field
BCD ASCII
Binary Value (Hex)
on
on
on
W 57
(Gauss)
+2.0
+1.5
+1.0
Value
30,000
22,500
15,000
High Byte
75
57
3A
Low Byte
30
E4
98
(1)
Default mode. This mode can be reset using the
*99we, *99rst command sequence.
+0.5
0.0
7,500
00
1D
00
4C
00
ASCII Format :
28 bytes
-0.5
-
7,500
E2
B4
SN | X 1 | X 2 | CM | X 3 | X 4 | X 5 | SP | SP | SN | Y 1 | Y 2 | CM | Y 3 | Y 4 |
-1.0
-1.5
-2.0
-15,000
-22,500
-30,000
C3
A8
8A
74
1C
D0
Y 5 | SP | SP | SN | Z 1 | Z 2 | CM | Z 3 | Z 4 | Z 5 | SP | SP | <cr>
The ASCII characters will be readable on a monitor as
signed decimal numbers. This format is best when the user
Output Readings—Table 5
is interpreting the readings.
Binary Format :
9 bytes
<cr> = carriage return (Enter Key), Hex code = 0D
SP = space, Hex code = 20
X H
|
X L
|
Y H
|
Y L
|
Z H
|
Z L
|
Validity
|
Checksum
|
<cr>
SN (sign) = - if negative, Hex code = 2D
SP if positive, Hex code = 20
X H =
X L =
Y H =
Y L =
Z H =
Z L =
Validity =
Checksum =
signed high byte, x axis
low byte, x axis
signed high byte, y axis
low byte, y axis
signed high byte, z axis
low byte, z axis
Validity byte is described below
Checksum is the ones complement of
CM (comma) = , if leading digits are not zero, Hex code = 2C
SP if leading digits are zero, Hex code = 20
X 1 , X 2 , X 3 , X 4 , X 5 = Decimal equivalent ASCII digit
X 1 , X 2 , X 3 = SP if leading digits are zero, Hex code = 20
<cr> =
the sum of the first seven bytes
carriage return (Enter Key), Hex code = 0D
RS-232 to RS-485
B&B Electronics
#485PTBR
HMR2300r
Output data format is in counts (sign + 15 bit magnitude)
Scale factor is 1 gauss = 15,000 counts
Output measurement range = ± 30,000 counts
RS-232
TD(A)
TD(B)
RS-422
Rx-lo
Rx-hi
1
8
The binary characters will be unrecognizable on a monitor
and will appear as strange symbols. This format is best
when a computer is interpreting the readings.
TD
RD
GD
2RD
3TD
7GD
RD(A)
RD(B)
SG
+12VDC
TERM.
Tx-lo 3
Tx-hi 2
Gnd 5
Pwr 9
J1 Pin
connector
Checksum = ones complement of the sum
(X H + X L + Y H + Y L + Z H + Z L + Validity)
120VAC
+12VDC
INTERFACE CONVERTER TO RS-232—FIGURE 3
5
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