Arithmetic instructions
76
Part II
IE
C Instructions
ATAN
Arctangent
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
ATAN
(see page
Data type
I/O
Function
REAL
input
input value between -52707176 and +52707176
REAL
output as input
arctangent 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
52707176
R900B
%MX0.900.11 permanently
output variable is zero
R9009
%MX0.900.9
for an instant
processing result overflows the output
variable
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.
This example uses variables. You can also use a constant for the input variable.
Description
ATAN calculates the arctangent of the input variable (value
52707176) and writes the angle data
in radians into the output variable. The function returns a value greater than -
/2 and smaller than
/2.
Data types
Error flags
Example
POU header
All input and output variables used for programming this function have been declared in the POU
header.
Body
The arc tangent of
input_value
is calculated and written into
output_value
.
LD
ST
When programming with structured text, enter the following:
output_value
:=
ATAN
(
input_value
);
Содержание FP Series
Страница 27: ...Chapter 1 Basics ...
Страница 60: ...Chapter 2 Data transfer instructions ...
Страница 62: ...Chapter 3 Arithmetic instructions ...
Страница 88: ...Chapter 4 Bitwise Boolean instructions ...
Страница 93: ......
Страница 94: ...Chapter 5 Bit shift instructions ...
Страница 100: ...Bit shift instructions 99 Part II IEC Instructions LD ...
Страница 102: ...Bit shift instructions 101 Part II IEC Instructions LD ...
Страница 103: ......
Страница 104: ...Chapter 6 Comparison instructions ...
Страница 106: ...Comparison instructions 105 Part II IEC Instructions LD ...
Страница 108: ...Comparison instructions 107 Part II IEC Instructions LD ...
Страница 114: ...Chapter 7 Conversion instructions ...
Страница 136: ...Conversion instructions 135 Part II IEC Instructions Body with and without EN ENO ...
Страница 242: ...Conversion instructions 241 Part II IEC Instructions Body ...
Страница 244: ...Conversion instructions 243 Part II IEC Instructions Body ...
Страница 253: ......
Страница 254: ...Chapter 8 Selection instructions ...
Страница 261: ......
Страница 262: ...Chapter 9 String instructions ...
Страница 280: ...String instructions 279 Part II IEC Instructions LD ...
Страница 281: ......
Страница 282: ...Chapter 10 Date and time instructions ...
Страница 306: ...Chapter 11 Bistable instructions ...
Страница 311: ......
Страница 312: ...Chapter 12 Edge detection instructions ...
Страница 315: ......
Страница 316: ...Chapter 13 Counter instructions ...
Страница 324: ...Chapter 14 Timer instructions ...
Страница 341: ......
Страница 342: ...Chapter 15 Arithmetic instructions ...
Страница 360: ...Arithmetic instructions 359 Part III FP Instructions LD ST IF DF start THEN F35_INC increment_value END_IF ...
Страница 362: ...Arithmetic instructions 361 Part III FP Instructions LD ST IF DF start THEN F36_DINC increment_value END_IF ...
Страница 384: ...Arithmetic instructions 383 Part III FP Instructions LD ST IF DF start THEN F37_DEC decrement_value END_IF ...
Страница 431: ...Arithmetic instructions 430 Part III FP Instructions LD ST IF start THEN F87_ABS abs_value END_IF ...
Страница 433: ...Arithmetic instructions 432 Part III FP Instructions ST IF start THEN F88_DABS abs_value END_IF ...
Страница 449: ...Arithmetic instructions 448 Part III FP Instructions LD ST IF DF start THEN F85_NEG negotiate_value END_IF ...
Страница 508: ...Chapter 16 Bistable instructions ...
Страница 512: ...Chapter 17 Bitwise Boolean instructions ...
Страница 555: ......
Страница 556: ...Chapter 18 Bit shift instructions ...
Страница 603: ......
Страница 604: ...Chapter 19 Comparison instructions ...
Страница 622: ...Chapter 20 Conversion instructions ...
Страница 687: ...Conversion instructions 686 Part III FP Instructions LD ...
Страница 702: ...Chapter 21 Counter instructions ...
Страница 711: ......
Страница 712: ...Chapter 22 Data transfer via communication ports ...
Страница 785: ......
Страница 786: ...Chapter 23 Data transfer via network ...
Страница 798: ...Data transfer via network 797 Part III FP Instructions LD ...
Страница 805: ......
Страница 806: ...Chapter 24 Data transfer within the PLC ...
Страница 866: ...Chapter 25 Date and time instructions ...
Страница 877: ......
Страница 878: ...Chapter 26 Selection Instructions ...
Страница 883: ......
Страница 884: ...Chapter 27 Edge detection instructions ...
Страница 890: ...Chapter 28 High speed counter instructions ...
Страница 913: ......
Страница 914: ...Chapter 29 Timer instructions ...
Страница 937: ......
Страница 938: ...Chapter 30 Process control instructions ...
Страница 966: ...Process control instructions 965 Part III FP Instructions ...
Страница 970: ...Chapter 31 FP e display instructions ...
Страница 979: ......
Страница 980: ...Chapter 32 System register instructions ...
Страница 997: ......
Страница 998: ...Chapter 33 Special instructions ...
Страница 1007: ......
Страница 1008: ...Chapter 34 Program execution control instructions ...
Страница 1020: ...Chapter 35 Pulse output instructions ...
Страница 1091: ......
Страница 1092: ...Chapter 36 Analog unit instructions ...
Страница 1133: ......
Страница 1134: ...Chapter 37 GT panel instructions ...
Страница 1138: ...Chapter 38 High speed counter instructions ...
Страница 1164: ...High speed counter instructions 1163 Part IV Tool Instructions ...
Страница 1172: ...Chapter 39 Pulse output instructions ...
Страница 1177: ...Pulse output instructions 1176 Part IV Tool Instructions LD ...
Страница 1180: ...Pulse output instructions 1179 Part IV Tool Instructions LD ...
Страница 1185: ...Pulse output instructions 1184 Part IV Tool Instructions LD ...
Страница 1192: ...Pulse output instructions 1191 Part IV Tool Instructions LD ...
Страница 1195: ...Pulse output instructions 1194 Part IV Tool Instructions LD ...
Страница 1198: ...Pulse output instructions 1197 Part IV Tool Instructions LD ...
Страница 1245: ......
Страница 1246: ...Chapter 40 Appendix Programming Information ...
Страница 1306: ...Appendix Programming Information 1305 ...