Yaskawa YASNAC PC NC PLC Programming Manual - Manual (Page 57)

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YASNAC PCNC PLC Programming Manual Chapter 6: PLC Instructions
d) Example
(6) SBI (Subtract Immediate) RR after operation: RR-
(a) Function
The instruction subtracts the specified numeric value from the content of the register and
stores the result to the register when the ST contact is ON (RR = 1). If the ST contact is
OFF (RR = 0), the instruction is not executed.
The RR content remains unchanged before and after the execution of the SBI instruction.
(b) Format
(c) Explanation
• An ST contact must be entered before the SBI instruction.
• The SBI instruction is executed in intervals of “4 × n” msec while the ST contact is
ON.
• There is no function to detect underflow. Make sure that “numeric value contents of
register”.
(d) Example
(7) ANI (AND Immediate) RR after operation: RR-
(a) Function
The instruction executes AND between the specified numeric value and the content of the
register and stores the result to the register when the ST contact is ON (RR = 1). If the ST
contact is OFF (RR = 0), the instruction is not executed.
The RR content remains unchanged before and after the execution of the ANI instruction.
B A Paradym31 Variable Name