Omron CP1H-CPU - 05-2006, Руководство по эксплуатации

Страница: 460 / 669

429
Temperature Sensor Units
Section 7-5
Example 1
Example 2
Converted Temperature Data
The temperature data will be stored in the input words allocated to the Tem-
perature Sensor Unit in 4-digit hexadecimal.
”m” is the last input word allocated to the CPU Unit, Expansion I/O Unit, or
Expansion Unit connected immediately before the Temperature Sensor Unit.
• Negative values are stored as 2’s complements.
• Data for range codes that include one digit after the decimal point are
stored without the decimal point, i.e., 10 times the actual value is stored.
• If the input temperature exceeds the range that can be converted, the
converted temperature data will be held at the maximum or minimum
value in the range.
• If the input temperature exceeds the range by more than a specified
amount, the open-circuit detection function will detect an open-circuit and
the converted temperature data will be set to 7FFF.
The open-circuit detection function will also operate if the cold junction
compensator is faulty.
• The open-circuit detection function will be automatically cleared and nor-
mal input temperature conversion will begin automatically when the input
temperature returns to the convertible range.
Input Data conversion examples
Unit: 1
°
C K or J 850
°
C
→
0352 hex
−
200
°
C
→
FF38 hex
Unit: 0.1
°
C K, J, Pt100 or
JPt100
×
10 500.0
°
C
→
5000
→
1388 hex
−
20.0
°
C
→ −
200
→
FF38 hex
−
200.0
°
C
→ −
2000
→
F830 hex
None
CPM1A-TS001/101
Temperature Sensor Unit CP1H
Input word
addresses
Output word
addresses
CIO 0
CIO 1
CIO 100
CIO 101
CIO 2
CIO 3
None
CPM1A-TS002/102
Temperature Sensor Unit CP1H
Input word
addresses
Output word
addresses
CIO 0
CIO 1
CIO 100
CIO 101
CIO 2
CIO 3
CIO 4
CIO 5
TS002/TS102 TS001/TS101
m+1 Converted temperature data from input 0 m+1 Converted temperature data from input 0
m+2
Converted temperature data from input 1
m+2
Converted temperature data from input 1
m+3
Converted temperature data from input 2
m+4
Converted temperature data from input 3