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Siemens S7 300/400 PLC Level 1 TIA Portal Sunday Jul 21st, 2019
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PLC Training Course:
Download the Siemens S7 300/400 PLC Level 1 TIA Portal
course as a PDF document

Course Title Siemens S7 300/400 PLC Level 1 TIA Portal
Software Siemens TIA Portal
PLC-Type Siemens S7 300 / 400 PLC
Duration 5 days
Pre-Requisites None, this is a beginners course
Maximum Delegates 6
Prices Click here for prices

Brief Description
  • Be able to recognise S7 hardware and be able to replace modules when a fault occurs.
  • Be able to operate the Step 7 software to make it perform certain tasks.
  • Understand basic S7 instruction set and be able to make minor modifications to software.
  • Be able to backup and restore a PLC program when required.
  • Be able to perform basic system diagnostics when a problem occurs.

Course Documentation
  • Training Log
  • Pre Course Exercises
  • Course Exercises
  • Post Course Exercises
  • Filofax Pocket Reference Guides View PDF file
PLC Training - Siemens S7 300/400 PLC Level 1 TIA Portal
   
Course Content
To fault find a system you need to know EXACTLY how it works
HOW EXACTLY DOES A PLC WORK?
  • The Led on the output card means i am getting voltage out right? does it?
  • What exactly happens in between? ,theres more than just a program in the CPU
  • How exactly does it scan the program?
  • What is this Watchdog Timer? Is it that important?
  • Can I use the same output twice? That's bad programming isn't it?
  • A PLC is a logic controller, so use a logical approach to fault find it.
  • What are the 8 simple test points to check?
  • The PLC is in RUN, that means theres a program right? does it?
  • FORCING a bit and toggling a bit is pretty much the same yeah? depends on which PLC
Then you need to Know the specifics
HOW DO I DO THE FOLLOWING?

(some straight forward some not so)

  • How do I check power is ON and PLC is in right mode (RUN or Program)
  • Check for a fault condition (is SF LED ON)
  • Establish a link to the PLC (accessible nodes)
  • If comms problem check PG/PC interface
  • Create a blank project and take a backup (just in case I mess up)
  • Open project for PLC and go OnLine
  • Interrogate Diagnostics Buffer
  • Identify if it is a hardware or software fault?
  • Change the battery
  • Change modules if necessary, (with spares and without spares)
  • Identify if it is a PLC or Comms fault (Profibus or MPI)
  • Check all settings against a template, Node Address etc.
  • Check Hardware Configuration
  • Clear Memory and Download program
  • Check software against latest copy (Compare function)
  • Monitor program
  • Searching for specific operands and instructions
  • Changing timer, counter values On Line
  • Making minor mods Off Line and On line
  • Check or create a VAT table to establish parameter status
  • Force a parameter if required
  • Call up reference data to assist with software diagnostics
  • Archive and Retrieve project
  • Display Documentation (Symbols, Comments) 
  • Printing Cross Reference / Program Listings etc.

Background information also covered

Understanding of the following:

  • Number formats, bits, bytes, words, double words
  • Binary, HEX,octal,floating point, integer
  • Data types and parameter types, Bool etc.
  • Block types
  • Variable types (local and global)
  • How to monitor various blocks
  • Ladder, STL programs
  • Basic Instructions, contacts, Set, reset etc.
  • Timers, Counters
  • Comparators, Maths
  • How to make minor mods
  • Altering values in a VAT table
  • Back tracking through a program to establish where power flow stops
  • Overall reset procedure
  • Fault finding tips
PLC Training - Siemens S7 300/400 PLC Level 1 TIA Portal
Course Equipment Per Delegate
  • S7 300 or 400 PLC
  • PC or Laptop
  • Simulator
 

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