Omron DRT2 SERIES DEVICENET SLAVES - OPERATION MANUAL 04-2008 Operation Manual page 411

Temperature Input Terminals
Temperature data (Actual temperature × 100 in hexadecimal
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390
The following diagram shows how the temperature data is divided into two
words and the structure of each word.
Data format for the leftmost 3 digits of data
15 14 13
Word order Degrees Off-wire
flag flag flag
0: °C
0: Leftmost 0: Normal
1: °F
1: Rightmost 1: Error
Data format for the rightmost 3 digits of data
15 14 13
Word order Degrees Off-wire
flag flag flag
0: °C
0: Leftmost 0: Normal
1: °F
1: Rightmost 1: Error
Word order flag: Indicates whether the word contains the rightmost or leftmost 3 digits.
Indicates whether the temperature units are ° C or ° F.
Degrees flag:
Off-wire flag: A value of 1 indicates an off-wire condition was detected. In this case, the
leftmost 3 digits will be 7FF and the rightmost digits will be FFF.
The rightmost 3 digits and leftmost 3 digits are sent to the Master alternately
in 125-ms intervals, as shown in the following diagram.
125 ms
Leftmost 3 digits
Data refreshing
Example 1: 1130.25 ° C
Temperature × 100:
Transmitted value:
Leftmost 3 digits
Flags
15 14 13 12
0 0 0 0
Leftmost °C Normal
digits
Rightmost 3 digits
Flags
15 14 13 12
1 0 0 0
°C
Rightmost Normal
digits
12 11 10 9 8
Not used.
×16
5
Always 0
12 11 10 9 8
Not used.
×16
2
Always 0
125 ms
Rightmost 3 digits
Data refreshing
113,025
01B981 (113,025 in hexadecimal)
×16 ×16 ×16
5 4 3
11 to 8 7 to 4 3 to 0
0 1 B
×16 ×16 ×16
2 1 0
11 to 8 7 to 4 3 to 0
9 8 1
Section 7-6
7 6 5 4 3 2 1
×16 ×16
4 3
7 6 5 4 3 2 1
×16 ×16
1 0
125 ms
Leftmost 3 digits
Time
Temperature
conversion data
0 0 1 B
Data
Flags
Temperature
conversion data
8 9 8 1
Data
Flags
0
0