Temperature Data - Hitachi HIDIC EH-150 Instruction Manual

7.2 Temperature Data

(1) Content of the measured value in WX** [ range : -50 to +400°C ](Pt100/ Pt1000)
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
-800 200
400 100
< Example >
(1) HF800 = "1111 1000 0000 0000"
-800 + 400 + 200 + 100 + 50 = -50 (°C)
(2) H0600 = "0000 0110 0000 0000"
25 + 12.5 = 37.5 (°C)
If the measured value is out of the range( less than –51 or more than 410), 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".
The relation between the measured value and the temperature
)The measured value (hexadecimal) -50 to +400°C
H4000
H3000
H2000
H1000
H0800
-50
0
50
HF800
b8
50 12.5
25 6.25
(HF) (H8) (H0) (H0)
(H0) (H6) (H0) (H0)
The measured data in WX** (signed decimal data)
200
100
7. Collection of Temperate Data
b7 b6 b5 b4
3.125 0.781 0.195
1.563 0.391
40.96
300 400
Figure 7.3
7-2
b3 b2 b1 b0
0.0488
(degrees)
0.0977 0.0244
Note)
Temperature(°C)