Thanks for fast reply.

This is how it looks in my project.

Process Data

Strange thing, because normal IO ports works fine, but this display doesn't. I'm electronics designer and programmer, but this language and IDE is completely new to me. 

You mentioned about FreeRun. Does pressing buttons should be visible on the Y/T chart in "online tab" ?

(I see only 0 value).

I forgot the most important - the code:

first global variables called BUTTONS:

{attribute 'qualified_only'}
VAR_GLOBAL

	bBUTTON_UP 		AT %I* 	:	BOOL;
	bBUTTON_DOWN 	AT %I* 	: 	BOOL;
	bBUTTON_LEFT 	AT %I* 	: 	BOOL;
	bBUTTON_RIGHT 	AT %I* 	: 	BOOL;
	bBUTTON_ENTER 	AT %I* 	: 	BOOL;


END_VAR

and main program:

UPPER window:

PROGRAM MAIN
VAR
	bButtonState : BOOL;
END_VAR

and LOWER window:

bButtonState := BUTTONS.bBUTTON_ENTER;

and Change Link option:

In the Process Data tab for the EL6090, switch to Inputs in the top pane and be sure that PDO 0x1A00 is enabled. If this is on then the status of the individual buttons should be linkable in your I/O. Be sure to activate the configuration after making any changes to the process data.

I had that settings. When I start program nothing happens. I see Input (5 bits) and Output (2 integers) of EL6090. 

I tried EL1014 module and works fine. Display shows  that it is in OP mode.

Maybe there is some library or something which I have to select before compile and run?

I connected 1 bool variable with UP button and 1 int variable with ValueRow 1 and launched it. Display shows something like this

EL6090
State: OP

and button variable is still FALSE.