Chapter 10 Real Value Peocessing; Floating-Point Instruction; Adding Single-Precision Real Numbers - Mitsubishi Electric MELSEC iQ-R Series Programming Manual

10
REAL VALUE PEOCESSING
10.1

Floating-point instruction

Adding single-precision real numbers

E+
This instruction adds single-precision real numbers.
ST
ENO:=EPLUS(EN,s1,s2,d);
■Execution condition
Instruction
E+
Setting data
■Description, range, data type
Operand Description
(s1) First addend data or the start device where the first addend data is stored
(s2) Second addend data or the start device where the second addend data is
stored
(d) Start device for storing the operation result
EN Execution condition
ENO Execution result
■Applicable devices/labels
Operand Bit
SB
(s1)

(s2)

(d)

Processing details
• This instruction adds the single-precision real number in the device specified by (s2) to the single-precision real number in
the device specified by (s1), and store the result in the device specified by (d).
(s1)+1 (s1)
+
Single-precision real number Single-precision real number
-126
• Value 0 or 2 ≤|specified value (stored value)| <2
(d).
Operation error
Error code Description
3402H The value input to (s1) is -0, a subnormal number, NaN (not a number), or ±∞.
The value input to (s2) is -0, a subnormal number, NaN (not a number), or ±∞.
3403H The data in the device specified by (d) exceeds the following range. (An overflow has occurred.)
128
|(d)|<2
Execution condition
Word
RX, RY, LB SW
 
 
 
(s2)+1 (s2) (d)+1
Single-precision real number
128
can be specified or stored in the devices specified by (s1), (s2), and
Range
-126 128
0, 2
≤|(s1)|<2
-126 128
0, 2
≤|(s2)|<2



G, RWw, RWr, LW



(d)
10 REAL VALUE PEOCESSING
10.1 Floating-point instruction
Data type
ANYREAL_32
ANYREAL_32
ANYREAL_32
BOOL
BOOL
Constant
K, H



105
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