Hitachi HIDIC EH-150 Instruction Manual page 16

(2) Content of temperature conversion data range : -20 to +40
The meaning of the each bit(b0 to b15) is shown below.
The each bit has own temperature. The total of the bit "1" is the measured temperature.
b15 b14 b13 b12 b11 b10 b9
-80 20
40 10
< Example >
(1) HE000 = "1110 0000 0000 0000"
-800 + 40 + 20 = -20 (°C)
(2) H0600 = "0000 0110 0000 0000"
2.5 + 1.25 = 3.75 (°C)
If the measured value is out of the range( less than –25 or more than 45), the data will be H7FFF.
The relation between the measured value (in WX**) and the actual temperature is shown below.
Temperature (°C) =
Note) bit 0 is normally "0".
Relation between the temperature and temperature conversion data
)The measured value (hexadecimal) -20 to +40 °C
H4000
H3000
H2000
H1000
H0800
-20
0
5
HE000
b8
5 1.25 0.3125
2.5 0.625
(HE) (H0) (H0) (H0)
(H0) (H6) (H0) (H0)
The measured data in WX** (signed decimal data)
20
10
7. Collection of Temperate
(Pt100)
b7 b6 b5 b4 b3
0.78125
0.1953125
0.15625 0.390625
409.6
Temperate(°C)
30 40
Figure 7.4
7-3
b2 b1 b0
( )
0.0488281
0.0976562 0.024414
Note)