Mitsubishi Electric MELSEC-Q/L - Bit Device Output Inversion

5 SEQUENCE INSTRUCTIONS
5.3 Output Instructions
167
5
Bit device output inversion
FF
Processing details
• Reverses the output status of the device designated by (D) when the execution command is turned OFF  ON.
Operation error
• There is no operation error in the FF instruction.
Program example
• The following program reverses the output of Y10 when X9 goes ON.
(D): Device number of the device to be reversed (bits)
Setting
data
Internal device R, ZR J\ U\G Zn Constant Others
DY
Bit Word Bit Word
(D)  
Device Device status
Prior to FF execution After FF execution
Bit device OFF ON
ON OFF
Word device bit designation 0 1
10
[Ladder Mode] [List Mode]
[Timing Chart]
Basic
Process
High
performance
Redundant Universal LCPU
Command
FF D
FF
Step
Instruction
Device
ON
X9
Y10
ON
OFF
OFF