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FF
5.3.9 Bit device output reverse (FF)
FF
Function
(1) Reverses the output status of the device designated by when the execution command is
turned OFF ON.
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] [List Mode]
[Timing Chart]
: Device number of the device to be reversed (bits)
Setting
Data
Internal Devices
R, ZR
J\
U\G
Zn Constants
Other
DY
Bit Word Bit Word
––
Device
Device Status
Prior to FF Execution After FF Execution
Bit device
OFF ON
ON OFF
Bit designated for word device
01
10
Basic
Process
High
performance
Redundant
Universal
Command
FF D
FF
D
D
D
Step
Instruction
Device
ON
X9
Y10
ON
OFF
OFF