Delta Electronics VFD037CH23A-21 — основы работы с лестничной диаграммой в PLC [465/638]

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Chapter 16 PLC Function CH2000 Series

16-12

Ladder Diagram

Structure

Explanation Command Device

Multiple output

MPS

MRD

MPP

none

Output command of coil

drive

OUT Y, M

Basic command,

Application command

Basic command/

Application

command

Inverse logic INV none

16.4.3 The Edition of PLC Ladder Diagram

The program edited method is from left power line to right power line. (The right power line will be

omitted during the edited of WPLSoft.) After editing a row, go to editing the next row. The

maximum contacts in a row are 11 contacts. If you need more than 11 contacts, you could have

the new row and start with continuous line to continue more input devices. The continuous

number will be produced automatically and the same input point can be used repeatedly. The

drawing is shown as follows.

X0 X1 X2 X3 X4 X5

X11 X12 X13

X6 X7 X10 C0 C1

00000

Row Number

The operation of ladder diagram is to scan from left upper corner to right lower corner. The output

handling, including the operation frame of coil and application command, at the most right side in

ladder diagram.

Take the following diagram for example; we analyze the process step by step. The number at the

right corner is the explanation order.

X0 X1 Y1 X4

TMR T0 K10