Online Updates

Online updates enable making online changes to a running application. These online updates include implementing a modification, downloading that modification to the system, then having the system seamlessly switch to the modified application. A seamless switch means no interruptions to the application process. Online changes are necessary for processes where any interruption may jeopardize production or safety.
WARNING:
Performing updates while the application is running can affect the Safety Function of the system. Updates should only be performed when absolutely required since the safety integrity of the system may be reduced during the modification.
Before performing updates while the device is connected, set up alternative safety measures lasting the duration of the update.
Performing an update on a Safety Implemented System is the responsibility of the user. The running application may stop if modifications are performed incorrectly.
Online updates are available in two types:
  • Regular Online Updates
  • Intelligent Online Updates
    IMPORTANT: Online updates may interrupt
    Modbus®
    communications. The
    Modbus
     task stops and restarts (less than one second) during an update.
Regular online updates are always enabled and occur when making minor modifications to an application, for example, without changing the data memory space (CRC). Intelligent online updates must be enabled and occur when making major changes to an application. Intelligent updates allow modifications to the data memory space.
An update is split into three phases:
  1. Downloads the update to the device
  2. Confirms the download is error free and verifies if the device will accept the update
  3. Realizes the update
    TIP: Perform an update after building a project. Updates are unavailable after cleaning a project. To perform intelligent updates, enable the option from the
    Intelligent Update Manager
    .
To perform an update
  1. For intelligent updates, ensure the device contains sufficient memory space.
  2. Set the maintenance enable key switch on the
    Trusted
     controller to the
    Maintain
    position.
  3. From the
    Application View
    , right-click the project or device for which to perform the update, and then click
    Update
    .
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