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Entry type: Application example Entry ID: 104206213, Entry date: 04/30/2015

Conversion Guide: Rockwell Automation PLC-5 to SIMATIC S7

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This conversion guide describes an optimized procedure for the rearrangement of a control system based on the Rockwell Automation PLC-5 to a system based on SIMATIC S7.

For a successful conversion from a Rockwell system PLC-5 to a SIMATIC S7 system, you need to understand three major parts:

  • The original Rockwell Hardware and Software
  • Your application/ technology or process
  • The new target system SIMATIC S7

Fig. 01

This document provides guidance for users who have used legacy control systems based on Rockwell Automation PLC-5 and in Addition:

  • Have the desire to take advantage of the features provided by SIMATIC S7 controllers
  • Have specific Rockwell code that they wish to effectively convert into a more efficient STEP7 code


  • Adapt best practice and to avoid the commonly made mistakes, when converting projects to STEP7
  • Understand the differences between the systems, so that you may better plan your strategy for conversion.

  document_conversionguide.pdf (2,4 MB)

In the following Excel filde are Rockwell and Siemens HMIs campared:
 Registrierung notwendig  HMI_CrossReference.xlsx (99,7 KB)

Additional Keywords
switch, changeover, change, migration, Allen-Bradley, PLC5


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