Yaskawa YASNAC PC NC PLC Programming Manual - Manual (Page 60)

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YASNAC PCNC PLC Programming Manual Chapter 6: PLC Instructions
• The relationship between register and numeric value is shown below”.
(d) Example
(10)DEC (Decode) 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” to RR (RR = 1) if the result of comparison is “coincide”. This instruction
is executed independent of RR at the input side.
(b) Format
(c) Explanation
• It is not allowed to enter a contact before the DEC instruction. If a contact must be
entered, use the COI instruction.
• The DEC instruction is executed in intervals of “4 × n” msec.
(d) Example
D7 D6 D5 D4 D3 D2 D1 D0
Register 0 0 1 1 0 0 1 1
Numeric value 0 1 0 1 0 1 0 1
Result 0 1 1 0 0 1 1 0
B A Paradym31 Variable Name