DirectLOGIC DL105 Handmatig - Pagina 11

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Step 6:

The DL105 PLC instruction set provides for three main approaches to solving the

Review the

application program, depicted in the figure below.

Programming

Concepts

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:

Once you have installed the Micro PLC

Choose the

and understand the main programming

concepts, you can begin writing your

Instructions

application program. At that time you will

begin to use one of the most powerful

instruction sets available in a small PLC.

Step 8:

Sometimes equipment failures occur

Understand the

when we least expect it. Switches fail,

Maintenance and

loads short and need to be replaced, etc.

Troubleshooting

In most cases, the majority of the

troubleshooting and maintenance time is

Procedures

spent trying to locate the problem. The

DL105 Micro PLC has many built-in

features such as error codes that can help

you quickly identify problems.

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 EDRUM 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.

Timer/Event Drum Sequencer

(see Chapter 6)

Getting Started

PLUS

) is based on state-transition

Stage Programming

(see Chapter 7)

Push--UP

DOWN

LIGHT

LOWER

TMR

K30

DL105 PLC User Manual, 3rd Edition

1- -11

RAISE

Push--

DOWN

CNT

CT3

K10