Delta Electronics VFD-E manual Ldi, Ori, Ldp, Andp, Orp, Orf, Anb, Orb

Appendix D How to Use PLC Function

16-bit binary number, i.e. a word, in each register. It uses two continuous number of data register to store double words.

Equipment indication: D0, D1,…,D29. The symbol of equipment is D and the number uses decimal.

The structure and explanation of ladder diagram:

Ladder Diagram Structure	Explanation	Command	Equipment
	Normally open, contact a	LD	X, Y, M, T, C
	Normally closed, contact b	LDI	X, Y, M, T, C
	Serial normally open	AND	X, Y, M, T, C
	Parallel normally open	OR	X, Y, M, T, C
	Parallel normally closed	ORI	X, Y, M, T, C
	Rising-edge trigger switch	LDP	X, Y, M, T, C
	Falling-edge trigger switch	LDF	X, Y, M, T, C
	Rising-edge trigger in serial	ANDP	X, Y, M, T, C
	Falling-edge trigger in serial	ANDF	X, Y, M, T, C

Rising-edge trigger in parallel

ORP

X, Y, M, T, C

Falling-edge trigger in parallel

ORF

X, Y, M, T, C

Block in serial

ANB

none

Block in parallel

ORB

none

D-10 Revision June 2008, 04EE, SW--PW V1.11/CTL V2.11