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Appendix D How to Use PLC Function|
D-44 Revision June 2008, 04EE, SW--PW V1.11/CTL V2.11
Mnemonic Function
PLS Rising-edge output
X0~X17 Y0~Y17 M0~M159 T0~15 C0~C7 D0~D29
Operand
--
9 9
-- --
--
Explanations:
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 a scan time.
Program Example:
Ladder diagram: Command code: Operation:
LD X0 Load A contact of X0
PLS M0 M0 rising-edge output
LD M0 Load the contact A of M0
X0
M0
PLS
M0
Y0SET
Timing Diagram:
X0
M0
Y0
a scan time
SET Y0 Y0 latched (ON)
Mnemonic Function
PLF Falling-edge output
X0~X17 Y0~Y17 M0~M159 T0~15 C0~C7 D0~D29
Operand
--
9 9
-- --
--
Explanations:
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.