Store PLCnext CommunityPLCnext on LinkedInPLCnext on Instagram  PLCnext on YouTube Github PLCnext CommunityStore PLCnext Community

  1. Frank PLCnext Team
  2. PLCnext Technology & PLCnext Controls
  3. Thursday, 04 February 2021

Dear Community,

During our quality analyses we have identified a possible critical behavior after a firmware update to FW 2021.0.

Under certain circumstances, an invalid project configuration may occur on the controller after a firmware update.
In this case, the controller cannot start the project and further project downloads are rejected.

Typical footprints are as follows:

  • The "Fail" gets active directly after the FW update were performed and succeeded.
  • It is not possible to deploy a new project via PLCnext Engineer.
  • The Output.log (/opt/plcnext/logs/) does show the following exceptions.

    ERROR - Exception occurs while loading plc component 'Arp.Plc.Esm': Exception of type 'Arp::System::Commons::InvalidConfigException' was thrown
    Task 'Globals' already defined.

    or

    ERROR - Exception occurs while loading plc component 'Arp.Plc.Esm': Exception of type 'Arp::System::Commons::InvalidConfigException' was thrown
    Task 'ServiceTask' already defined.

Remedy:

The cause of the issue is a change in the way some system internal tasks were configured.
Under special circumstances, a duplicate configuration may occur in the overlay file system.
This can happen if, for example, the project folder /opt/plcnext/project has been manually copied to the controller or if a download change operation were declined.

In any case will the following options resolve the fault:

  1. Perform a factory reset via PLCnext Engineer (Cockpit)
  2. Perform a factory reset type 1 via ssh (Factory Reset)
  3. Delete the following files in the /upperdir/

    upperdir conflict

After restarting, does the control boot at least in ready mode and a new project can be deployed.

We will release in the next weeks the Hotfix 2021.0.2 which will prevent the described problem.

We apologise for the inconvenience.

Phoenix Contact Electronics Headquarter - PLCnext Runtime Product Management and Support
Frank PLCnext Team Accepted Answer Pending Moderation
0
Votes
Undo

Dear all,

with the release of the product maintenance firmware 2021.0.2 LTS were this issue resolved.

During the start-up process does the firmware check the overlay for "invalid" configuration files and deletes them if necessary (please refer for more information the change log)

The firmwae 2021.0.2 is already available for:

  • AXC F 1152
  • AXC F 2152
  • AXC F 3152

 

Phoenix Contact Electronics Headquarter - PLCnext Runtime Product Management and Support
  • Page :
  • 1


There are no replies made for this post yet.
However, you are not allowed to reply to this post.