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3-2
Section
Temperature Sensor Units
210
Example 3
Temperature:
–200.12
°
F
×
100:
–20012
Temperature Data: FFB1D4 (hexadecimal for –20012)
Leftmost 3 Digits and Flags
Rightmost 3 Digits and Flags
Flags
Temperature
data
Flags
Temperature
data
4
F
F
B
C 1
D 4
Flags
Bits
08 to 11
04 to 07
00 to 03
Data
Normal
°
F
Leftmost
15 14 13 12
0
0
0
0
x16
5
x16
4
x16
3
F
F
B
Flags
Bits
08 to 11
04 to 07
00 to 03
Data
Normal
°
F
Rightmost
15 14 13 12
1
0
0
0
x16
2
x16
1
x16
0
1
D
4
Example 4
Temperature:
Open circuit (
°
F)
Temperature Data: 7FFFFFFF
Leftmost 3 Digits and Flags
Rightmost 3 Digits and Flags
Flags
Temperature
data
Flags
Temperature
data
6
7
F
F
E F
F
F
Flags
Bits
08 to 11
04 to 07
00 to 03
Data
Error
°
F
Leftmost
15 14 13 12
0
1
1
0
x16
5
x16
4
x16
3
7
F
F
Flags
Bits
08 to 11
04 to 07
00 to 03
Data
Error
°
F
Rightmost
15 14 13 12
1
1
1
0
x16
2
x16
1
x16
0
F
F
F
Note
1. Leftmost digits are stored in the lower memory addresses. Treat the data in
the lower memory address as the leftmost digits when programming.
2. Be sure that the data is read at least once every 125 ms to allow for the CPU
Unit’s cycle time and communications time. Correct data may not be ob-
tained if the read cycle is greater than 125 ms.