Automation Direct D0-05DR-D Erste Schritte - Seite 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)
X0
LDD
V1076
CMPD
K309482
SP62
Y0
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
T1
K30
CNT
UP
CT3
K10
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