Bit Device Output Reverse (Ff) - Mitsubishi MELSEC QS Series Programming Manual

FF
5.3.9

Bit device output reverse (FF)

FF
FF
Function
(1) Reverses the output status of the device designated by
turned OFF
Bit device
Bit designated for word device
Operation Error
(1) There are no operation errors associated with the FF instruction.
Program Example
(1) The following program reverses the output of Y10 when X9 goes ON.
[Ladder Mode]
[Timing Chart]
5-36
5.3 Output Instruction
5.3.9 Bit device output reverse (FF)
Command
: Device number of the device to be reversed (bits)
D
Internal Devices
Set
Data
Bit Word
D
ON.
Device
ON
X9 OFF
ON
Y10 OFF
Constants Others
––
D
Device Status
Prior to FF execution
OFF
ON
0
1
FF D
when the execution command is
After FF execution
ON
OFF
1
0