Delta Electronics VFD-E manual Orb Anb Out Tmr

Appendix D How to Use PLC Function
The explanation of command order:
1	LD	X0
2	OR	M0
3	AND	X1
4	LD	X3
	AND	M1
	ORB
5	LD	Y1
	AND	X4
6	LD	T0
	AND	M3
	ORB
7	ANB
8	OUT	Y1
	TMR	T0 K10

The detail explanation of basic structure of ladder diagram

1.LD (LDI) command: give the command LD or LDI in the start of a block.

LD command LD command

AND Block OR Block

The structures of command LDP and LDF are similar to the command LD. The difference is that command LDP and LDF will act in the rising-edge or falling-edge when contact is ON as shown in the following.

Rising-edge

X0 X0

Time

OFF ON OFF

Falling-edge

Time

OFF ON OFF

2.AND (ANI) command: single device connects to a device or a block in series.

AND command AND command

D-12 Revision June 2008, 04EE, SW--PW V1.11/CTL V2.11