21: T
RIGONOMETRIC
F
UNCTION
I
NSTRUCTIONS
21-4 FC6A S
ERIES
MICROS
MART
L
ADDER
P
ROGRAMMING
M
ANUAL
FC9Y-B1726
COS (Cosine)
Valid Devices
For valid device address ranges, see "Device Addresses" on page 2-1.
When the data designated by S1 does not comply with the normal floating-point format, a user program execution error will result, turning on
special internal relay M8004 and ERR LED on the FC6A Series MICROSmart. For details about the user program execution errors, see "User Program
Execution Errors" on page 3-10.
Since the COS instruction is executed in each scan while input is on, a pulse input from a SOTU or SOTD instruction should be used.
Valid Data Types
Example: COS
cos S1·S1+1 → D1·D1+1
When input is on, the cosine of the radian value assigned by source device S1 is stored to the
destination assigned by device D1.
Device Function I Q M R T C D P Constant Repeat
S1 (Source 1) Radian value to convert into cosine value — — — — — — X — X —
D1 (Destination 1) Destination to store conversion results — — — — — — X — — —
W (word) — Since floating point data is used, the source and destination devices use two consecutive data registers.
I (integer) —
D (double word) —
L (long) —
F (float) X
When input I1 is turned on, the cosine of the radian value of data registers D10 and D11
assigned by source device S1 is stored to data registers D20 and D21 assigned by
destination device D1.
3.926991 rad = 5Ï€/4 rad
cos 5
π/4 → –0.7071068
D1S1
3.926991
D10·D11
–0.7071068
D20·D21
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