9-43
9 Using Expansion Units and Expansion I/O Units
CP1E CPU Unit Hardware User’s Manual(W479)
9-4 Temperature Sensor Units
9
9-4-4 Flow of Processing
(b) The following programming example shows how to convert the data for tempera-
ture input 0 to BCD and store the result in D0 and D1. “0001” is stored in D1
when the input data is a negative value. The following system configuration is
used.
(6) Programming with BCD(24) Instruction
Temperature unit setting 0(°C)
Two-decimal-place
Mode
0 (normal)
Input range setting 1 (Pt100: -200.0 to
650.0°C)
Input0 CIO 2
CPU Unit
CP1W-TS001/101
Temperature Sensor Unit
Inputs
Outputs
CIO 0
CIO 1
CIO 100
CIO 101
CIO 2
CIO 3
None
002
#7FFF
W0.00
CMP
W0.00
2
#7FFE
Always ON
P_On
CMP
Detects completion of input 0 initialization.
P_EQ
W0.01
2
D0
BCD
2.15
#0000
2
SBB
P_EQ
2.15
#0000
D1
MOV
CLC
D0
D0
D0
BCD
#0001
D1
MOV
Execution
condition
ON when input 0 has been initialized
Detects an open-circuit alarm or Unit
error by checking whether the error code
7FFF has been output
ON when an open-circuit alarm or Unit
error has been detected for input 0.
Stores positive BCD data in D0.
Stores #0000 in D1.
When input 0 converted value is negative
(#0000 minus two’s complement = actual
value)
Stores negative BCD data in D0.
Stores #0001 in D1 to indicate a
negative number.
P_EQ
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