plchandle in jwt token

[WolfgangDannert]

Hello,

what is the parameter plchandle used for in the jwt token?
What can be done with it?

Thank you for a reply.

[georkueh]

Hello

can you give us more details regarding this issue? What is the use case? ...?

kind regards

[WolfgangDannert]

Hello georgkueh,

in V01.16 the plchandle value toggles between "0" and "1".
"0" if no PLC snap is installed and "1" if the PLC snap is installed and active.

Since V01.18 the value is no longer "1" if PLC Snap is installed/active but a random uint64 variable.

What does the uint64 variable stand for?

Thanks for an answer

[WolfgangDannert]

Hello,
is there already news about the topic?

kind regards

[CodeShepherd]

I will again check this internally.

[georkueh · Accepted solution]

When a user logs in through Identity Manager, it logs in internally to PLC runtime and receives a handle (the so-called PLC Session ID). Identity Manager packs this PLC handle in the JWT (token). The user now is able to access the PLC by using this JWT, e.g. via the Datalayer. The format was changed from CODESYS 3.5.17.x to CODESYS 3.5.18.x.