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7 APPLICATION INSTRUCTION
7.7 Real Number Instruction
Adding single-precision real numbers
DEADD(P)
These instructions add 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).
■Descriptions, ranges, and data types
■Applicable devices
• These instructions add 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).
• When the constant (K or H) is specified in (s1) and (s2), these instructions convert values into single-precision real number
automatically.
• The table below shows the related devices.
Ladder diagram Structured text
ENO:=DEADD(EN,s1,s2,d);
ENO:=DEADDP(EN,s1,s2,d);
Operand Description Range Data type Data type (label)
(s1) Augend data or head device number where the data to
which another is added is stored
0, 2
-126
|(s1)|2
128
Single-precision real number Single-precision real number
(s2) Addend data or head device number where the data that is
added to another is stored
0, 2
-126
|(s2)|2
128
Single-precision real number Single-precision real number
(d) Head device number for storing the operation result Single-precision real number Single-precision real number
Operand Bit Word Double word Indirect
specification
Constant Others
X, Y, M, L,
SM, F, B, SB
U\G T, ST,
C, LC
T, ST, C, D,
W, SD, SW, R
U\G Z LC LZ K, H E $
(s1)
(s2)
(d)
Device Name Description
Condition Operation
SM700 Carry The absolute value of the operation result 2
128
The value of (d) is the maximum value (2
128
) of 32-bit real
numbers and the carry flag SM700 turns on.
SM8020 Zero The operation result is true "0".
(The mantissa part is "0").
The zero flag SM8020 turns on.
SM8021 Borrow The absolute value of the operation result < 2
-126
The value of (d) is the minimum value (2
-126
) of 32-bit real
numbers and the borrow flag SM8021 turns on.
SM8022 Carry The absolute value of the operation result
2
128
The value of (d) is the maximum value (2
128
) of 32-bit real
numbers and the carry flag SM8022 turns on.
(s1)+1 (s1) (d)(d)+1
+
(s2)+1 (s2)
Single-precision real number Single-precision real number Single-precision real number
(s1)+1 (s1) (d)(d)+1
+
[ K2346 ]
Single-precision real number Single-precision real number
Converted into a single-precision
real number automatically.