Allen Bradley SLC PLC + DeviceNet
Course
In Corby
Description
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Type
Course
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Location
Corby
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Duration
5 Days
Be able to recognise DeviceNet hardware and be able to replace modules when a fault occurs. Be able to operate the RSNetworx software to make it perform certain tasks. Understand basic concept of nodes, commissioning, scanner cards , scan list, addressing etc and communications with the PLC. Be able to replace DeviceNet nodes when required. Be able to perform basic system diagnostics when a problem occurs. Suitable for anyone interested in Allen Bradley SLC PLC + DeviceNet.
Facilities
Location
Start date
Start date
About this course
Ideally previous PLC experience not suitable for absolute beginner.
Reviews
Course programme
Software: RSLogix + RSNetworx
PLC-Type: SLC500 PLC and DeviceNet
Course Documentation
- Training Log
- Pre Course Exercises
- Course Exercises
- Post Course Exercises
- Filofax Pocket Reference Guides
- DeviceNet Course Notes
Course Content
To fault find a system you need to know EXACTLY how it works
HOW EXACTLY DOES A PLC WORK?
- Am I getting the input to the PLC?
- 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)
- Check power is ON and PLC is in right mode (RUN or Program)
- Check LEDs for fault definition
- Check and Change Modules if required (with spares and without spares)
- System connection
- Establish link to PLC (RSLinx, a major problem area these days)
- Create a blank project and take a backup (just in case I mess up)
- Open the correct project Off Line and link to PLC
- Interrogate errors in Status table
- Identify if it is a hardware or software fault?
- Identify if it is a PLC or Comms fault
- Change the battery
- 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 Custom Monitor table to establish parameter status
- Create a Histogram to monitor address transitions
- Creat a Trend to trend address status or values
- Altering timer, counter and other data table values if required
- Force a parameter if required
- Toggling addresses to move program on in sequence
- Call up documentation to assist with software diagnostics
- Printing Cross Reference / Program Listings etc.
- Configuration of DeviceNet Network
- Basic communications, RS 232, baud rates etc.
- Refresher on RS Linx
- Connecting Communications Cables
- Configuring Scanner Card
- Understanding LED indications
- Understanding error mesages
- Power requirements
- Configuring Devices using RS Networx
- Online and Offline modes
- Saving Configurations
- Programming within the SLC 500
- Reading and writing information to and from the PLC
- Addressing of the Nodes on the Network
- Node commissioning
- EDS devices and libraries
- Replacement of faulty input/ output cards
- Replacement of faulty devices
- Generation of documentation to assist fault finding
Background information also covered
Understanding of the following:
- Number formats, bits,words,
- Binary, floating point, integer
- Program blocks and Data Tables, B3, T4, N7 etc
- How to monitor various blocks
- Understand basic Ladder programs
- Basic Instructions, contacts, Set, reset etc.
- Timers, Counters
- Comparators, Maths
- Altering values in a data table
- Toggling v Forcing
- Back tracking through a program to establish where power flow stops
- Overall reset procedure
- Fault finding tips
Course Equipment Per Delegate
- SLC500 PLC
- DeviceNet Network
- PC or Laptop
- Simulator
Additional information
Allen Bradley SLC PLC + DeviceNet