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and the last

It is a pointer to the first element of an array.
Declare an array in your code, like

mySchedule : ARRAY [1..32] OF Schedule := [(usiSwitch := 1, todFirstOn := ..., todLastOn := ..., byDayFlags := 2#0010_1001), ...]; 

and then assign ADR(mySchedule[1]) to aslSchedule.

A tip: instead of posting screenshots of online help, post the link.

Hello Sgronchi,
Thanks for your help.

All the mecanism of pointer to schedule seems to be difficult to understand for me .

I probably not correctly set the pointer to asISchedule input of the function block.

Here is a screenshot of what i received.

Can you tell me where is my mistake ?

The aim of that function block , is to receive DATE,TOD,WEEKDAY and to compare with an array [1..7,1..4] of boolean corresponding of [1..4,1..2] TOD ON and OFF (validation for each day of week of 4 schedule) (a sort of multischeduler but only 4 schedules and 1 binary output.

So I don't know how to force the input asISchedule.

Best regards

Ooook, did not try but just looked the docs.
From the error it seems that aslSchedule is VAR_IN_OUT, so just put the array without ADR and [1].

Well, with the last indications the program compile.

But with the same settings , one program is working and the other no !

I don't understand the error of pointer !

Does someone have any idea ?

timerswitch running

settings

You can see in the CFC part that aslSchedule is 0, so the function block did not receive "mySchedule" position in memory.
Maybe the culprit is a stale connection (shown connected but actually not), try to delete and reconnect it.