PLCnextBase library

PLCnext Engineer
1

I am trying to programmatically read the configured task interval of a task in which I have a running program. Is there a function or function block that can read the configured task interval of the task that FU/FB is placed in?

By using the PLCnextBase library, I was able to get the actual task interval using a PBCL_SysGetCycleTime FB. I also see a PBCL_SysDataAccess FB which says that variables with an access path can be read. I used STRING#'axc-f-2152-1/PLC.ESM_DATA.ESM_INFOS[1].TASK_INFOS[1].INTERVAL' as my path but got an error code that the variable did not exist.
2

Please try this:

- In your POU variable table, create a variable named [b]ESM_DATA[/b], type [b]ESM_DAT[/b], Usage [b]External[/b].
- In your POU code sheet, assign the value of [b]ESM_DATA.ESM_INFOS[1].TASK_INFOS[1].INTERVAL[/b] to a local variable of type [b]LINT[/b].

This local variable should now contain the value you want.

Is this solution OK for you?
3

Martin, Thank you for the suggestion. The one drawback of this solution is that one is often not sure which task this POU/Function block will be placed in by the user. If the user places this program/Function block in task#2 but uses ESM_DATA.ESM_INFOS[1].TASK_INFOS[1].INTERVAL , the answer will be incorrect.

I was wondering if there is a FB similar to PBCL_SysGetCycleTime from the PLCnextBase library from the PLCnext store.
4

Here is an answer from the PLCnext Engineer support team:

[quote]Currently it is unfortunately not possible to get the information in the application in wish Task the POE instance are used/called.

As described there is currently only the system variable (ESM) available to get the information of the task interval of  Task 1 to n but
the topic was addressed to the development and since the system is constantly being developed, this could be possible in a future version.[/quote]