Yaskawa YASNAC PC NC PLC Programming Manual - Manual (Page 72)

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YASNAC PCNC PLC Programming Manual Chapter 6: PLC Instructions
(d) Example
(28)MULW(MUL Word Register) RR after operation: RR
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(a) Function
The instruction executes multiplications of the contents of double-length register (WR2)
and the register (WR1) when the ST contact is ON (RR = 1) and stores the result to
double-length register (WR2).
If the ST contact is OFF (RR = 0), the MULW instruction is not executed.
(b) Format
(c) Explanation
• A ST contact must be entered before the MULW instruction.
• The MULW instruction is executed in intervals of “4 × n” msec while the ST contact
is ON.
• If overflow occurs, in other words, if the result exceeds FFFH, “1” is set to RR
(RR = 1)
The lower one word is stored to the register.
A B Paradym31 Variable Name