Delta AH500 - Page 504

AH500 Programming Manual
6-336
API Instruction code Operand
Function
1508 FTANH P
S, D
Hyperbolic tangent of the
floating-point number
Device
X Y M S T C HC D L SM SR E PR K 16# “$” DF
S
         
D
        
Pulse instruction
16-bit instruction (5-6 steps)
32-bit instruction
AH500 AH500 -
Symbol:
S
：
Source value Double word
D
：
Hyperbolic tangent value Double word
Explanation:
1. Hyperbolic tangent value=(e
s
-e
-s
)/(e
s
+e
-s
).
2. If the conversion result is 0, SM600 is ON.
Example:
1. When X0.0 is ON, the hyperbolic tangent of the floating-point number in (D1, D0) is stored in
(D11, D10). The hyperbolic tangent value in (D11, D10) is the floating-point number.
Single-precision
floating-point number
H
yperbolic tangent value
D1 D0
D11 D10
S
D
2. If the conversion result is 0, SM600 is ON.
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.