9-47
9 Using Expansion Units and Expansion I/O Units
CP1E CPU Unit Hardware User’s Manual(W479)
9-4 Temperature Sensor Units
9
9-4-5 Function Descriptions
Example 4
Temperature: Open circuit (°F)
Temperature Data: 7FF FFF
Additional Information
• Leftmost digits are stored in the lower memory addresses. Treat the data in the lower memory
address as the leftmost digits when programming.
• 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 obtained if the read cycle is greater than
125 ms.
z Programming Example
The following programming example shows how to use 2-decimal-place Mode for the following PLC
configuration.
In this example, 100 times the temperature data for temperature input 0 (input to CIO 002) is stored
in binary form in D100 to D102.
Leftmost 3 Digits and Flags
Flags
Bits
Data
15
0
14
1
13
1
12
0
11 to 08
7
07 to 04
F
03 to 00
F
6 7 F F
Flags
Rightmost 3 Digits and Flags
Flags
Bits
Data
15
1
14
1
13
1
12
0
11 to 08
F
07 to 04
F
03 to 00
F
E F F F
Flags
Error
°F
Leftmost
Error
°F
Rightmost
×16
5
×16
4
×16
3
×16
2
×16
1
×16
0
Temperature
data
Temperature
data
CPU Unit
Inputs
CIO 000
CIO 001
Outputs
CIO 100
CIO 101
Inputs
CIO 002
CIO 003
Outputs
None
CP1W-TS001
Temperature Sensor Unit
Temperature unit setting:
0 (°C)
Two-decimal-place Mode:
1 (2 digits after decimal point stored)
Temperature Unit Flag (0: °C, 1: °F)
Open-circuit Flag (0: Normal, 1: Error)
Bit
D100
D101
D102
15 14 13 12
Always 0
11 10
8
7531
Always 0 Always 0 0 0
Temperature input 0
CIO 2
Leftmost data
Rightmost data
CIO 200
9
6
4
20
×16
5
×16
4
×16
3
×16
2
×16
1
×16
0
×16
7
×16
6
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