Delta Electronics VFD-E manual Description of the Application Commands, Plf

					Appendix D How to Use PLC Function
	Program Example:
Ladder diagram:				Command code: Operation:
	X0		M0	LD	X0	Load A contact of X0
		PLF
				PLF	M0	M0 falling-edge output
	M0
				LD	M0	Load the contact A of M0
		SET	Y0
				SET	Y0	Y0 latched (ON)
Timing Diagram:

X0

M0

Y0

a scan time

Mnemonic

END

Operand

Function

Program End

None

Explanations:

It needs to add the END command at the end of ladder diagram program or command program. PLC will scan from address o to END command, after executing it will return to address 0 to scan again.

D.5.9 Description of the Application Commands

Transmission Comparison

Four

Fundamental

Operations of

Arithmetic

API

10

11

12

15

20

21

Mnemonic		P				Steps
Codes				Function
		Command
16 bits	32 bits				16-bit		32-bit
CMP	--		Compare		7		--
ZCP	--		Zone compare		9		--
MOV	--		Data Move		5		--
BMOV	--		Block move		7		--
ADD	--		Perform the addition of		7		--
			BIN data
SUB	--		Perform the subtraction		7		--
			of BIN data

Revision June 2008, 04EE, SW--PW V1.11/CTL V2.11 D-45