Delta C2000 series User Manual page 527

API
LN
125
D P
Bit Devices
X M
Y K
S
＊
D
＊
Operands:
Please refer to the specifications of each model for the
range of operands.

Explanation





Example


Word Devices
H KnX KnY KnM T
＊
＊
S: Source device D: Operation result
The base is e = 2.71828 and exponent is S
[
[ D +1，D ]=EXP
S +1，S
Only a positive number is valid for S. Register D has to be 32-bit format.
Operation is conducted in floating point value, so the value in S needs to be
converted into floating value before exponent operation.
S
The content in D =e
eD = S. The content of D = LN S, where the value in S is specified by users.
When M0 = ON, convert (D1, D0) to binary floating value and save the
result in (D11, D10).
When M1= ON, perform natural logarithm operation with (D11, D10) as the
antilogarithm. The value is saved in register (D21, D20) in binary floating
format.
Chapter 16 PLC Function C2000 Series
Float Natural Logarithm Operation
16-bit command (5 STEPS)
－
C D
＊
32-bit command
＊
DLN
Flag signal: none
]
; e=2.71828 and S is the specified data source
16-80
－ － －
DLNP