Guidelines For Designing A Micro Plc System; Partitioning Your Process Or Machine - Siemens SIMATIC S7-200 System Manual

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Basic Concepts for Programming an S7-200 CPU

Guidelines for Designing a Micro PLC System

There are many methods for designing a Micro PLC system. This section provides

some general guidelines that can apply to many design projects. Of course, you

must follow the directives of your own company's procedures and of the accepted

practices of your own training and location. Figure 4-1 shows some of the basic

steps in the design process.

Divide your process or machine into sections that have a level of independence

from each other. These partitions determine the boundaries between controllers

and influence the functional description specifications and the assignment of

Partition your process or machine.

Create the functional specifications of the units.

Design the hard-wired safety circuits.

Specify the operator stations.

Create the PLC configuration drawings.

Create a list of symbolic signal-naming conventions (optional).

Basic Steps for Planning a PLC System

S7-200 Programmable Controller System Manual

A5E00066097-02

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