Chapter 6 Applied Instructions
6-337
API
Instruction code
Operand
Function
1509 FRAD P
S, D
Converting the degree to the radian
Device
X Y M S T C HC D L SM SR E PR K 16# “$” DF
Pulse instruction
16-bit instruction (5-6 steps)
32-bit instruction
Symbol:
S
：
Data source (degree) Double word
D
：
Conversion result (radian) Double word
Explanation:
1. The equation below is used to convert degrees into radians.
2. Radian＝Degree×(π/180).
3. If the conversion result is 0, SM600 is ON.
Example:
When X0.0 is ON, the degree in (D1, D0) is converted into the radian, and the conversion result is
stored in (D11, D10). The radian in (D11, D10) is the floating-point number.
D1 D0
D11 D10
Degree
Floating-point number
Radian (Degree /180 )×π
Floating-point number
S
D
Additional remark:
If the value in S exceeds the range of values which can be represented by the floating-point
numbers, the instruction is not executed, SM0 is ON, and the error code in SR0 is 16#2013.
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