Inversion Of Bit Output Device - Mitsubishi MELSEC System Q Manual

The Basic Instruction Set
4.7.11

Inversion of bit output device

Instruction
FF
*
The FF instruction can be used to set outputs (Y), relays (M) and individual bits of word devices.
The FF instruction inverts the operation condition of the device designated at the output with
the rising edge at the input of the FF instruction.
– If the condition of the output device is set (1) it will be reset (0) after inversion.
– If the condition of the output device is reset (0), it will be set (1) after inversion.
Ladder Diagram
The above program inverts the output condition of Y10 with the rising edge from input X1:
4 – 30
Function
Inversion of bit output device
ON (1)
X1
OFF (0)
1
Y10
0
An Introduction to Programming
Ladder Diagram IEC Instruction List
MELSEC Instruction List
LD X1
FF Y10
IEC Instruction List
LD X1
FF_MD Y10
t
MITSUBISHI ELECTRIC
FF_MD