18.22 Fnc134 - Acos / Floating Point Arc Cosine - Mitsubishi Electric FX3G SERIES Programming Manual

FX /FX /FX Series Programmable Controllers
3G 3U 3UC
Programming Manual - Basic & Applied Instruction Edition
18.22 FNC134 – ACOS / Floating Point Arc Cosine
Outline
This instruction executes COS
1. Instruction format
FNC 134
D ACOS P
2. Set data
Operand Type
S
D
3. Applicable devices
Bit Devices
Oper-
and System User
Type
X Y M T C S D .b KnX KnY KnM KnS T C D R U \G
S
D
Explanation of function and operation
1. 32-bit operation (DACOS and DACOSP)
An angle is obtained from the cosine value stored in [
A real number can be directly specified as
Command
input
FNC134
DACOS
+1
S
−1
COS
Binary floating point
(real number)
• The cosine value stored in [
• The angle (operation result) stored in [
For conversion between radians and degrees, refer to the RAD (FNC136) and DEG (FNC137) instructions.
Error
An operation error is caused in the following case; The error flag M8067 turns ON, and the error code is stored in
D8067.
• When a value specified in
−1
(arc cosine) operation.
Mnemonic
16-bit Instruction
−
−
Head device number storing a cosine value used in COS
Head device number storing the operation result
Digit Specification
S
S D
S D
Binary floating point
] can be set ranging from −1.0 to +1.0.
S +1, S
D
is outside the range from −1.0 to +1.0 (error code: K6706)
S
18.22 FNC134 – ACOS / Floating Point Arc Cosine
→ For handling of floating point, refer to Subsection 5.1.3.
Operation Condition
32-bit Instruction
9 steps
Description
−1
(arc cosine) operation
Word Devices
Special
System User
Unit
V
S +1, S ], and stored to [
.
+1
D
(real number)
] is expressed in radians (from 0 to π).
+1, D
→ For the RAD (FNC136) instruction, refer to Section 18.24.
→ For the DEG (FNC137) instruction, refer to Section 18.25.
18 Floating Point – FNC110 to FNC139
Mnemonic Operation Condition
Continuous
DACOS
Operation
Pulse (Single)
DACOSP
Operation
Data Type
Real number (binary)
Others
Con- Real Charac-
Index
stant Number ter String
Z Modify K H E " "
D +1, D ].
11
12
13
14
Pointer
15
P
16
17
18
19
20
525