Chapter 14 PLC Function |C200 Series
14-37
Mnemonic Function
ORF Falling-edge parallel connection
X0~X17 Y0~Y17 M0~M799 T0~159 C0~C79 D0~D399
Operand
9 9 9 9 9
－
The ORP commands are used in the parallel connection of the contact’s falling-edge
detection.
Command code: Operation:
LD X0
Load A contact of X0
ORF
X1
X1 falling-edge
detection in parallel
connection
Example
Ladder diagram:
X0
X1
Y1
OUT Y1
Drive Y1 coil
Mnemonic Function
PLS Rising-edge output
X0~X17 Y0~Y17 M0~M799 T0~159 C0~C79 D0~D399
Operand
－
9 9
－ － －
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.
Command code: Operation:
LD X0
Load A contact of X0
PLS
M0
M0 rising-edge output
LD M0
Load the contact A of
M0
SET Y0
Y0 latched (ON)
Example
Ladder diagram:
X
M0
PLS
M0
Y0
SET
Timing diagram:
X0
M0
Y0
Time for one scan cycle
Mnemonic Function
PLF Falling-edge output
X0~X17 Y0~Y17 M0~M799 T0~159 C0~C79 D0~D399
Operand
－
9 9
－ － －
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.
Call 1(800)985-6929 for Sales
Call 1(800)985-6929 for Sales
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