GT_ActivateScreen

Control the GT panel screen

Function block to activate or change a specified GT screen from the PLC using the variables described in the table for data types.

Parameters

Input

wScreenNumber (WORD): Screen number
tCommunicationTimeOut (TIME): Communication timeout

Input/output

bDisableUserChange (BOOL): Disable screen change by touch operation on GT
bActivateScreen (BOOL): Activate new screen
dutGTBitArea (GT_CommunicationBitArea_DUT): GT basic communication bit area
dutGTWordArea (GT_CommunicationWordArea_DUT): GT basic communication word area

Output

bError (BOOL): Turns on when the screen is not switched within the communication timeout

Example

POU header

All input and output variables used for programming this function have been declared in the POU header. The same POU header is used for all programming languages.

_VAR
	VAR 
		bActivateNewPage: BOOL:=FALSE;
		wNewPageNo: WORD:=0;
		g_bStartPage: BOOL:=FALSE;
		fbChangeScreen: GT_CtrlActivateScreen;
		bHoldPage: BOOL:=FALSE;
	END_VAR

LD body

BODY
    WORKSPACE
        NETWORK_LIST_TYPE := NWTYPELD ;
        ACTIVE_NETWORK := 0 ;
    END_WORKSPACE
    NET_WORK
        NETWORK_TYPE := NWTYPELD ;
        NETWORK_LABEL :=  ;
        NETWORK_TITLE :=  ;
        NETWORK_HEIGHT := 9 ;
        NETWORK_BODY
B(B_VARIN,,g_GT_WordArea,13,7,15,9,);
B(B_VARIN,,g_GT_BitArea,13,6,15,8,);
B(B_VARIN,,bActivateNewPage,13,5,15,7,);
B(B_VARIN,,bHoldPage,13,4,15,6,);
B(B_VARIN,,wNewPageNo,13,2,15,4,);
B(B_VARIN,,T#3s,13,3,15,5,);
B(B_FB,GT_ActivateScreen!,fbChangeScreen,15,1,34,9,,?BwScreenNum?BtComTimeOut?BbDisableUserChange?AbDisableUserChange?BbActivateScreen?AbActivateScreen?BdutGTBitArea?AdutGTBitArea?BdutGTWordArea?AdutGTWordArea?AbError);
L(1,0,1,9);
        END_NETWORK_BODY
    END_NET_WORK
END_BODY

ST body

fb_GT_ActivateScreen(wScreenNum := wNewPageNo,
                         tComTimeOut := T#3s,
                         bDisableUserChange := bHoldPage,
                         bActivateScreen := bActivateNewPage,
                         dutGTBitArea := g_GT_BitArea,
                         dutGTWordArea := g_GT_WordArea,
                         bErrorActivateScreen => bErrorActivateScreen);