Mitsubishi MELSEC iQ-F FX5 series User Manual

454
7 APPLICATION INSTRUCTION
7.7 Real Number Instruction
Calculating the exponent of single-precision real number
EXP(P)/DEXP(P)
These instructions calculate the exponent of a value specified by (s), and store the operation result in the device specified by
(d).
The EXP(P) instructions can also be used as DEXP(P).
*1 The EXP instruction is not supported by the ST language. Use EXP of the standard function.
Page 770 EXP(_E)
Setting data
■Descriptions, ranges, and data types
■Applicable devices
Processing details
• These instructions calculate the exponent of a value specified by (s), and store the operation result in the device specified
by (d).
• In the exponential operation, the base (e) is set to "2.71828".
• The table below shows the related devices.
Operation error
Ladder diagram Structured text
*1
ENO:=EXPP(EN,s,d);
Operand Description Range Data type Data type (label)
(s) Data whose exponent is calculated or head device number
where the data is stored
 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 $
(s)   
(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.
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.
Error code
(SD0/SD8067)
Description
3402 The specified device value is -0, denormalized number, NaN (not a number), or .
(s) (d)
(s)+1 (s) (d)+1 (d)
e ( )
Single-precision real number Single-precision real number

Mitsubishi MELSEC iQ-F FX5 series Specifications

General

Brand	Mitsubishi
Model	MELSEC iQ-F FX5 series
Category	Controller
Language	English