Panasonic FP Series User Manual

Arithmetic instructions
73
Part II IEC Instructions
ACOS
Arccosine
To add an enable input and enable output to the instruction, select [With EN/ENO] from the
"Instructions" pane (LD, FBD or IL editor). To reuse an instruction select "Recently used" from the
context menu or press <Ctrl>+<Shift>+<v> in the programming window.
The number of steps may vary depending on the PLC and parameters used, see
also Table of Code Intensive Instructions in the online help.
PLC types
Availability of ACOS (see page 1318)
Data type I/O Function
REAL input input value between -1 and +1
REAL output as input arccosine of input value in radians
No. IEC address Set If
R9007 %MX0.900.7 permanently
R9008 %MX0.900.8 for an instant
 input variable does not have the data
type REAL or input variable is not  -1.0
and  1.0
R900B %MX0.900.11 permanently  output variable is zero
R9009 %MX0.900.9 for an instant  processing result overflows the output
variable
This example uses variables. You can also use a constant for the input variable.
Description
ACOS calculates the arccosine of the input variable and writes the angle data in radians into the
output variable. The function returns a value from 0.0 to .
Data types
Error flags
Example
In this example, the same POU header is used for all programming languages. For an example
using IL (instruction list), please refer to the online help.
POU header
All input and output variables used for programming this function have been declared in the POU
header.
Body
The arc cosine of input_value is calculated and written into output_value.
LD
ST

Panasonic FP Series Specifications

General

Mounting	DIN rail
Type	PLC
Communication Interface	RS-232, RS-485, Ethernet (depending on model)
Input Voltage	100-240V AC or 24V DC (depending on model)
Output Type	Relay, Transistor
I/O Points	Varies by model
Operating Temperature	0°C to 55°C
Dimensions	Varies by model
Weight	Varies by model