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Mitsubishi MELSEC-Q/L User Manual

Mitsubishi MELSEC-Q/L
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532
EXPD, EXPDP
Conversion from natural logarithm to common logarithm
In the CPU module, calculation is made using a natural logarithm.
To obtain a common logarithm value, enter in, a common logarithm value divided by 0.43429.
: Data of which the exponential value is obtained or head number of the devices where the data is stored (real number)
: Head number of the devices where the operation result will be stored (real number)
Function
(1) Returns the exponent of the value designated by , and stores the results of the operation at the device designated by
.
(2) Exponent operations are calculated taking the base (e) to be "2.71828".
(3) When the operation results in -0 or an underflow, the result is processed as 0.
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.
7.12.22 EXP D, EXPDP Expon ent operation on floating-p oint data
(Double preci sion)
7.12.22
EXPD, EXPDP
Setting
Data
Internal Devices
R, ZR
J\
U\G
Zn
Constants
E
Other
Bit Word Bit Word
–– –– ––
–– –– –– ––
Error
code
Error details
Q00J/
Q00/
Q01
QnH QnPH QnPRH QnU LCPU
4140
The specified device value is not within the following range:
0, 2
-1022
| Specified device value | < 2
1024
The specified device value is -0.
–– –– –– ––
4141
The operation result exceeds the following range (when an overflow
occurs):
2
1024
| Operation result |
–– –– –– ––
S
Universal
LCPU
Basic
High
performance
Process
Redundant
Command
Command
EXPDP
EXPD
EXPDP
EXPD S D
S D
S
D
S
D
S
D
e
(
)( )
+3
S
+2
S
S
+1
S
+3
D
+2
D
D
+1
D
64-bit floating-point
real number
64-bit floating-point
real number

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Mitsubishi MELSEC-Q/L Specifications

General IconGeneral
BrandMitsubishi
ModelMELSEC-Q/L
CategoryController
LanguageEnglish

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