Pls; Plf - Delta C2000 series User Manual

Mnemonic
Rising-edge output

PLS

X0~X17
Operand
－
When X0=OFF→ON (rising-edge trigger), PLS command will be executed and M0 will
send the pulse of one time which the length is the time needed for one scan cycle.
Ladder diagram:
Example
X0
M0
Timing diagram:
X0
Time for one scan cycle
M0
Y0
Mnemonic
Falling-edge output

PLF

X0~X17
Operand
－
When X0= ON→OFF (falling-edge trigger), PLF command will be executed and M0
will send the pulse of one time which the length is the time for scan one time.
Ladder diagram:
Example
X0
M0
Timing Diagram:
X0
M0
Y0
Y0~Y17 M0~M799

M0
PLS
Y0
SET
Y0~Y17 M0~M799

M0
PLS
Y0
SET
Time for one scan cycle
16-45
Chapter 16 PLC Function C2000 Series
Function
T0~159

－
Command code:
LD X0
PLS
M0
LD M0
SET Y0
Function
T0~159

－
Command code:
LD X0
PLF
M0
LD M0
SET Y0
C0~C79 D0~D399
－ －
Operation:
Load A contact of X0
M0 rising-edge output
Load the contact A of
M0
Y0 latched (ON)
C0~C79 D0~D399
－ －
Operation:
Load contact A of X0
M0 falling-edge output
Load contact A of M0
Y0 latched (ON)