Publication 1766-RM001A-EN-P - October 2008
214 Math Instructions
COS - Cosine
Instruction Type: output
The COS instruction places the sine of the Source (in radians) in the
Destination.
Enter the following parameters when programming this instruction:
• Source is the address to compute the cosine.
• Destination is the address to store the cosine of the Source.
Address Levels for the operands involved in the COS can be ALL word,
ALL double word, ALL float, or a combination. These operands shall
undergo a conversion to float. The calculation of the source (in float) is
then performed, and the result is then cast to the data type of Destination.
ABS
Cosine
Source N7:0
0<
Dest N7:1
0<
COS
Execution Time for the COS Instruction
Controller Data Size When Rung Is:
True False
MicroLogix 1400 word 112.7110 µs 0.7686 µs
long word 19.8070 µs 0.7694 µs
COS Instruction Valid Addressing Modes and File Types
For definitions of the terms used in this table see Using the Instruction Descriptions on page 92.
Parameter
Data Files
Function Files
(1)
CS - Comms
IOS - I/O
DLS - Data Log
(2)
Address Mode
(3)
Address Level
O
I
S
B
T, C, R
N
F
ST
L
MG, PD
RI/RIX
PLS
RTC
HSC
PTOX, PWMX
STI
EII
BHI
MMI
LCD
Direct
Indirect
Immediate
Int16
Immediate Int32
Immediate Float
Bit
Word
Double Word
Element
Float
Source •• •••• • • • • • • • ••••
Destination • • • • • • • •
• • •• •
(1) PTOX and PWMX files are only for use with MicroLogix 1400 BXB or BXBA unit.
(2) The Data Log Status file can only be used for the following math instructions: ADD, SUB, MUL, DIV, NEG, and SCP.
(3) See Important note about indirect addressing.
IMPORTANT
You cannot use indirect addressing with: S, MG, PD, RTC, HSC, PTOX,
PWMX, STI, EII, BHI, MMI, CS, IOS, and DLS files.
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