Instruction Manual

III-1.7 EEXP (e-function (No. 11))

The e-function is calculated.

If input signal x1 is higher than 85, there may be an overflow. In this case, y1 = 1,5

is output rather than

forming the power.

If x1 is not wired, this is interpreted as x1 = 0 and thus as y1 =1.

Note:

EEXP is the reversal function of function LN.

Examples:

With an input value of x1 = 5, output value y1 = 148,413159.

With an input value of x1 = 0,69314718, output value y1 =2.

III-1.8 LN (natural logarithm (No. 12))

ln 1)= (

The natural logarithm of input variable x1 is formed.

The basis of natural logarithms is constant e (2,71828182845904).

If x1 is not wired, this is interpreted as x1 = 1. In this case y1 is 0.

With a negative input variable x1, y1 = -1,5

is set.

Note:

LN is the reversal function of function EEXP.

Examples:

The result of input value x1 = 63 is an output value of y1 = 4,143134726.

The result of input value x1 = 2,71828182845904 is an output value of y1 =1.

Scaling and calculating functions 9499-040-82711

III-94 EEXP (e-function (No. 11))