Delta CT2000 Series User Manual page 487

Chapter 16 PLC Function CT2000 Series
Ladder diagram:
Command
ORF
Reverse edge detection parallel connection
X0~X17
Operand
The ORF command is used for contact falling edge detection parallel connection.
Ladder diagram:
Command
PLS
Upper differential output
X0~X17
Operand
Upper differential output commands. When X0=Off→On (positive edge-triggered), the
PLS command will be executed, and M0 will send one pulse, with a pulse length
consisting of one scanning period.
Ladder diagram:
X0
M0
Time sequence diagram:
X0
M0
Y0
Command
PLF
Lower differential output
X0~X17
Operand
Lower differential output command. When X0= On→Off (negative edge-triggered), the
PLF command will be executed, and M0 will send one pulse, with pulse length
consisting of one scanning period.
Ladder diagram:
X0
M0
X0
X1
Y0~Y17
 
X0
X1
Y0~Y17

－
M0
PLS
Y0
SET
Time for one scan cycle
Y0~Y17

－
M0
PLF
SET Y0
Command code:
Y1
LD
ORP
OUT
Function
M0~M799 T0~159
 
Command code:
LD
Y1
ORF
OUT
Function
M0~M799 T0~159

－
Command code:
LD
PLS
LD
SET
Function
M0~M799 T0~159

－
Command code:
LD
PLF
LD
16-46
Description:
X0 Load Contact a of X0
X1 Forward edge
X1
detection parallel
connection
Y1 Drive Y1 coil
C0~C79 D0~D399

－
Description:
X0 Load Contact a of X0
X1 Reverse edge
X1
detection parallel
connection
Y1 Drive Y1 coil
C0~C79 D0~D399
－ －
Description:
X0 Load Contact a of X0
M0 Upper differential
M0
output
M0 Load Contact a of M0
Y0 Action continues
Y0
(ON)
C0~C79 D0~D399
－ －
Description:
X0 Load Contact a of X0
M0 Lower differential
M0
output
M0 Load Contact a of M0