Automation Direct D0-05AA Başlarken - Sayfa 11

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Step 6: Review the Programming Concepts

The DL05 PLC instruction set provides for three main approaches to solving the application

program, depicted in the figure below.

• RLL diagram-style programming is the best tool for solving boolean logic

and general CPU register/accumulator manipulation. It includes dozens of

instructions, which will also be needed to augment drums and stages.

• The Timer/Event Drum Sequencer features up to 16 steps and offers

both time and/or event-based step transitions. The DRUM instruction

is best for a repetitive process based on a single series of steps.

• Stage programming (also called RLL

diagrams. Stages divide the ladder program into sections which

correspond to the states in a flow chart you draw for your process.

Standard RLL Programming

(see Chapter 5)

LDD

V1076

CMPD

K309482

SP62

OUT

After reviewing the programming concepts above, you'll be equipped with a variety of tools to

write your application program.

Step 7: Choose the Instructions

Once you have installed the Micro PLC and

understand the main programming concepts, you

can begin writing your application program. At

that time you will begin to use one of the most

powerful instruction sets available in a small PLC.

Step 8: Understand the Maintenance and

Troubleshooting Procedures

Sometimes equipment failures occur when we

least expect it. Switches fail, loads short and need

to be replaced, etc. In most cases, the majority of

the troubleshooting and maintenance time is spent

trying to locate the problem. The DL05 Micro

PLC has many built-in features such as error codes

that can help you quickly identify problems.

plus

) is based on state-transition

Timer/Event Drum Sequencer

(see Chapter 6)

DL05 Micro PLC User Manual, 6th Edition, Rev. E

Chapter 1: Getting Started

Stage Programming

(see Chapter 7)

Push–UP

RAISE

LIGHT

DOWN

Push–

LOWER

DOWN

TMR

K30

CNT

CT3

K10

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