Yaskawa YASNAC PC NC PLC Programming Manual - Manual (Page 61)

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YASNAC PCNC PLC Programming Manual Chapter 6: PLC Instructions
(11)COI (Coincide Immediate) RR after operation: RR
Ù
(a) Function
When the ST contact is ON (RR = 1), the instruction compares the numeric value to the
eight-bit data of the register or contact set and sets “1” to RR (RR = 1) if the result of com-
parisons is “coincide”.
If the ST contact is OFF (RR = 0), the instruction is not executed. RR remains unchanged.
(b) Format
(c) Explanation
• A ST contact must be entered before the COI instruction.
• The COI instruction is executed in intervals of “4 × n” msec while the ST contact is
ON.
(d) Example
(12)CMP (Compare) RR after operation: RR
Ù
(a) Function
The instruction compares the numeric value to the eight-bit data of the register or contact
set and sets “1” or “0” depending on the result of comparison.
Register (contact)
≥
Numeric value: RR = 1
Register (contact) < Numeric value: RR = 0
This instruction is ececuted independent of RR at the input side.
(b) Format
B A Paradym31 Variable Name
B A Paradym31 Variable Name