Delta CFP2000 Series, User Manual

Page: 661 / 756

Chapter 16 PLC Function Applications
│
CFP2000
16-88
API
EXP
Binary floating point number obtain exponent
124
D P
Bit device Word device
16-bit command
－ － － －
32-bit command (9 STEP)
DEXP Continuous
execution type
DEXPP Pulse
execution type
Flag signal: none
X Y M K H KnX KnY KnM T C D
S
＊ ＊ ＊
D
＊
Notes on operand usage:
Please refer to the function specifications table for each device in
series for the scope of device usage
 S
: operation source device.
D
: operation results device.

Taking e =2.71828 as a base,
S
is the exponent in the EXP operation.

[
D
+1
，
D
]=EXP
[
S +1
，
S
]

Valid regardless of whether the content of
S
has a positive or negative value. The
designated register D must have a 32-bit data format. This operation is
performed using floating-point numbers, and
S
must therefore be converted to a
floating point number.

Content of operand
D
=e
S
; e=2.71828,
S
is the designated source data

When M0 is On, the value of (D1, D0) will be converted to a binary floating point
number, which will be stored in register (D11, D10).

When M1 is On, the EXP operation is performed on the exponent of (D11, D10);
its value is a binary floating point number stored in register (D21, D20).
M0
M1
DFLT D0 D10
DEXP D10 D20