Reer MZERO - Memory Operators; D FLIP FLOP (Max Number = 16); T FLIP FLOP (Max Number = 16); Sr Flip Flop

STAND ALONE PROGRAMMABLE SAFETY CONTROLLER
66 8541403 • 19/07/2021 • Rev.1
English
MEMORY OPERATORS
MEMORY operators can be used if you decide to save any data (TRUE or FALSE) from other project
components.
Status changes are performed according to the truth tables shown for each operator.
D FLIP FLOP (max number = 16)
The D FLIP FLOP operator saves the previously set status on
output Q according to the following truth table.
Preset
Clear
Ck
D
Q
1
0
X
X
1
0
1
X
X
0
1
1
X
X
0
0
0
L
X
Keep memory
0
0
Rising edge
1
1
0
0
Rising edge
0
0
Parameters
Preset: If selected enables output Q to be set to 1 (TRUE).
Clear: If selected enables the saving process to be reset.
T FLIP FLOP (max number = 16)
This operator switches the Q output at each rising edge of
the T input (Toggle).
Parameters
Enable Clear: If selected enables the saving process to be
reset.
SR FLIP FLOP
SR FLIP FLOP operator brings output Q
at 1 with Set, 0 with Reset.
See the following truth table.
SET
RESET
Q
0
0
Keep memory
0
1
0
1
0
1
1
1
0