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E+(P),E-(P)
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6.2 Arithmetic Operation Instructions
6.2.9 Addition and subtraction of floating decimal point data (Single precision) (E+(P),E-(P))
(2) Values which can be designated at and and which can be stored, are as follows:
0, 2
-126
| Designated value (stored value) | < 2
128
Operation Error
(1) In any of the following cases, an operation error occurs, the error flag (SM0) turns ON, and
an error code is stored into SD0.
• The contents of the designated device or the result of the addition are not "0", or not within
the following range: (Error code: 4100)
0, 2
-126
| Contents of designated device | < 2
128
(For the Basic model QCPU, High Performance model QCPU, Process CPU, Redundant
CPU) (Error code: 4100)
• The value of the specified device is 0.
*2
(For the Basic model QCPU, High Performance model QCPU, Process CPU, Redundant
CPU) (Error code: 4100)
*2: There are CPU modules that will not result in an operation error if 0 is specified.
Refer to Section 3.2.4 for details.
• The result of addition and subtraction exceeds the following range. (The overflow occurs.)
(For the Universal model QCPU only)
2
128
| Result of addition and subtraction | (Error code: 4141)
• The value of the specified device is 0, unnormalized number, nonnumeric, and ± .
(For the Universal model QCPU only) (Error code: 4140)
Program Example
(1) The following program adds the 32-bit floating decimal point type real numbers at D3 and D4
and the 32-bit floating decimal point type real numbers at D10 and D11 when X20 goes ON,
and stores the result at D3 and D4.
[Ladder Mode] [List Mode]
[Operation]
(2) The following program subtracts the 32-bit floating decimal point type real number at D10
and D11 from the 32-bit floating decimal point type real numbers at D20 and D21, and stores
the result of the subtraction at D20 and D21.
[Ladder Mode] [List Mode]
[Operation]
S
D
Step
Instruction
Device
D4
5961.437
D3
D11
12003.200
D10
D4
17964.637
D3
Step
Instruction
Device
D21
97365.203
D20 D11
76059.797
D10 D21
21305.406
D20