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Publication 1766-RM001A-EN-P - October 2008
216
Math Instructions
TAN - Tangent
Instruction Type: output
The TAN 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 tangent.
•
Destination is the address to store the tangent of the Source.
Address Levels for the operands involved in the TAN 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.
AB
S
Tangent
S
ource
N7
:
0
0<
Dest
N7
:
1
0<
TAN
Execution Time for the TAN Instruction
Controller
Data Size
When Rung Is:
True
False
MicroLogix 1400
word
122.6760 µs
0.3915 µs
long word
126.9135 µs
0.4234 µs
TAN 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 - C
o
mm
s
IOS - I/O
DLS - Da
ta
Lo
g
(2
)
Address Mode
(3)
Address Level
O
I
S
B
T,
C
, R
N
F
ST
L
MG, PD
RI/RIX
PLS
RTC
HSC
PTO
X
, PW
MX
STI
EII
BH
I
MMI
LCD
Dir
e
c
t
In
dir
ect
Imme
di
ate
Int1
6
Immedi
ate Int32
Imme
di
ate
F
loa
t
Bit
Wo
rd
Do
ub
le
W
o
rd
E
lement
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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