Siemens S7-300/400 Introduction

Siemens S7-300/400
(Modules 1-4)
Duration: 4 days
Audience: Anyone needing to maintain or program an S7-300/400 project using Step 7 Classic
Prerequisites: Basic Computer Skills

Course Outline

Module 1

This module provides an introduction and overview of the Siemens S7-300/400 product. The training station used during the class is reviewed along with the Siemens PLCSIM software and the students will set the PG interface. Students will create an S7-300 project and hardware configuration, cover module status and memory layout. The module completes with the creation of symbols and a key troubleshooting tool – the VAT table.


  1. Introduction to the Demo
  2. PLC Simulator
  3. System Overview
  4. Step 7 Software
  5. Setting the PG I/F
  6. Configuring Hardware
  7. Module Status
  8. Memory Layout
  9. Symbols
  10. VAT Table

Module 2

This module begins with the bit logic or relay type instructions followed by a brief review of numbering systems. Data blocks are introduced and then applied during subsequent lessons. S5-type Timers and counters are reviewed and then the clock byte is introduced.


  1. Bit Logic Instructions
  2. Numbering Systems
  3. Data Blocks
  4. Load and Transfer Instructions
  5. Timers
  6. Counters
  7. Clock Byte

Module 3

This module begins with the operation of the most commonly used OB blocks. Next data handling is introduced; you will use math and compare operations to perform a small calculation. Analog IO is reviewed. Finally FC and FB blocks are covered and you will create reusable logic based on the data handling exercise.


  1. OB Blocks
  2. Data Manipulation
  3. Analog I/O
  4. Functions
  5. Function Blocks
  6. Monitor With Path

Module 4

This module begins with PROFIBUS IO whereby configuring and fault handling is reviewed. Depending on the hardware in the class, PROFINET will also be introduced. The module will be completed by an examination of key troubleshooting tools, searching and reference data, comparing blocks and forcing.


  2. Configuring and Adding PN Devices
  3. Searching and Reference Data
  4. Compare Blocks
  5. Forcing
  6. Troubleshooting
  7. Common Tasks

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*This class is scheduled in the 2nd week of the month.

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