Mitsubishi Electric MELSEC-Q/L - Page 659

7 APPLICATION INSTRUCTIONS
7.12 Special Function Instructions
657
7
Program example
• The following program performs a SIN
-1
operation on the sign (positive when X0 is OFF, and negative when X0 is ON), the
BCD 1-digit integer part from X30 to X33 and the BCD 4-digit decimal fraction part from X20 to X2F, and outputs the
calculated angle in 4 BCD digits from Y40 to Y4F.
[Ladder Mode]
[List Mode]
[Operations involved when X20 to X33 designates value of 0.4753]
Sets the sign of a SIN value ( )
Executes range check for the set SIN value
Sets the integer part of a SIN value ( )
Sets the decimal fraction part of a SIN value ( )
Executes SIN
-1
operation and outputs the result of operation to Y40 to Y4F ( )
1
2
3
4
Step Instruction Device
BCD value
D0
Transfer
MOV
D1
Transfer
MOV
D2
BCD value
0
000
BCD value
0
000
BCD value
3
574
X20
BCD value
3
574
X2F
X30
BCD value
X33
X0 OFF
0
BASIN operation
8200
BASIN
Y40Y4F