Yaskawa MP900 Series Machine Controller New Ladder Editor - Manual (Page 105)

1.5 Basic Function Instructions
1-95
1
„ Parameter
„ Program Example
e ( = 2.7183) to the power of the input value (x = 1.0) is calculated.
Maximum value (3.4 ･･･ E + 38) is stored and an operation error will not occur even if the operation
results of EXP instruction in an overflow.
1.5.9 NATURAL LOGARITHM Instruction (LN)
„ Outline
The LN instruction uses the Source as the input (x) and stores the natural logarithm (Log
e
x )
of the input in the Dest as the operation result. This instruction can be used only in a real
number operation.
„ Format
Parameter Name Setting
Source
(Input) • Any real number type register
• Any real number type register with subscript
• Constant
Dest
(Output) • Any real number type register (except for # and C register)
• Any real number type register with subscript (except for # and
C register)
INFO
Symbol: LN
Full Name: Natural Logarithm
Category: FUNCTION
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