FB_CXGetTextDisplayUSB

The function block is used for the CX2100 and for the EL6090 terminal. When the function block is called, only the matching NetID and port number for the respective device has to be allocated.

	nPort:	sNetID
CX2100	Is displayed in TwinCAT on the ESB device tab.	Is the NetID of the PC or is left blank (‘ ‘).
EL6090	Is the EtherCAT address of the terminal	Is the EtherCAT address of the EtherCAT master.

The function block FB_CXGetTextDisplayUSB is used to read the lines on the display. In addition, the cursor status is read, i.e. cursor switched on or off, or is flashing. The function block also indicates whether the backlight is switched on or off.

Inputs

VAR_INPUT
     bExecute      : BOOL;
     sNetID        : T_AmsNetID;
     nPort         : T_AmsPort;
     eMode         : E_CX2100_DisplayModesRd;
END_VAR

Name	Type	Description
bExecute	BOOL	The command is executed with a rising edge.
sNetID	T_AmsNetID	AMSNetID of the device
nPort	T_AmsPort	AmsPort of the device
eMode	E_CX2100_DisplayModesRd	Mode switching

Outputs

VAR_OUTPUT
     bBusy         : BOOL;
     bError        : BOOL;
     nErrorID      : UDINT;
     sLine1        : STRING(80);
     sLine2        : STRING(80);
     nCursorPosX   : USINT;
     nCursorPosY   : USINT;
     nCursorMode   : USINT;
     nBacklight    : USINT;
END_VAR

Name	Type	Description
bBusy	BOOL	The command is in the process of being transmitted by ADS. No new command will be accepted as long as `bBusy` remains TRUE.
bError	BOOL	Becomes TRUE, as soon as an error occurs.
nErrorID	UDINT	Supplies the error number when the `bError` output is set.
sLine1	STRING	This string is read with the corresponding command.
sLine2	STRING	This string is read with the corresponding command.
nCursorPosX	USINT	Cursor position on the X axis
nCursorPosY	USINT	Cursor position on the Y axis
nCursorMode	USINT	Cursor mode
nBacklight	USINT	Backlight

E_CX2100_DisplayModesRd:

E_CX2100_DisplayModesRd : (
     eCX2100_DisplayNoActionRd := 0,
     eCX2100_ReadCursorInfo,
     eCX2100_ReadBackLight,
     eCX2100_ReadLine1,
     eCX2100_ReadLine2,
     eCX2100_ReadLines
);

eCX2100_DisplayNoActionRd: no action.

eCX2100_ReadCursorInfo: read values via the cursor.

eCX2100_ReadBackLight: read backlight values.

eCX2100_ReadLine1: read values from the first line.

eCX2100_ReadLine2: read values from the second line.

eCX2100_ReadLines: read values from lines.

Requirements when using the CX2100

Development environment	Target platform	PLC libraries to include
TwinCAT v3.1	CX (WES7/Win7/Win10: TC RT x86/x64, WEC6/7: TC RT x86, TC/BSD: TC RT x64)	Tc2_SystemCX

Requirements when using the EL6090

Development environment	Target platform	PLC libraries to include
TwinCAT v3.1	PC or CX (WES7/Win7/Win10: TC RT x86/x64, WEC6/7: TC RT x86, WEC7: TC CE7 ARMV7, TC/BSD: TC RT x64, TC OS ARMT2)	Tc2_SystemCX