Ghisalba VFD-E Series - Page 252

Appendix D How to Use PLC Function
_
VFD-E Series
Revision August 2006, 01EE, SW--PW V1.03/CTL V2.03 D-39
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 X0~X17
Operand
--
99
-- -- -- --
Explanations:
When X0= ONШOFF (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.
Program Example:
Ladder diagram: Command code: Operation:
LD X0 Load A contact of X0
PLF M0 M0 falling-edge output
LD M0 Load the contact A of M0
X0
M0
PLF
M0
Y0SET
Timing Diagram:
a scan time
X0
M0
Y0
SET Y0 Y0 latched (ON)