Detailed Description
2.12 Block descriptions
PLC Basic Program Solution Line (P3 sl)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
2-177
Example
FUNCTION FC 12: VOID //Event control of auxiliary functions
VAR_INPUT
Chan: BYTE ; //Parameter is supplied by basic program
END_VAR
VAR_TEMP
ChanDB: INT ;
END_VAR
BEGIN
L Chan; //Channel index no., (0,1,2,..)
+ 21; //Channel DB offset
T ChanDB; //Save channel DB no.
TO DB[ChanDB]; //Channel DB is opened indirectly
// Auxiliary-function change signals are now scanned, etc.
BE;
END_FUNCTION
2.12.19 FC 13: BHGDisp Display control for handheld unit
Description of functions
This block carries out the display control of the handheld unit (HHU). The information to be
output on the display is stored as 32 characters in string data ChrArray. A fixed text
assignment of 32 characters is, therefore, required for this string when the data block is
created. Variable components within this string can be inserted by means of the optional
numerical converter, for which parameter Convert must be set to TRUE. The variable to be
displayed is referenced via the pointer Addr. Parameter DataType contains the format
description of this parameter (see parameter table). The number of bytes of the variable is
linked to the format description. The address justified to the right within the string is specified
by parameter StringAddr. The number of written characters is shown in the parameter table.
By setting parameter Row to 0, it is possible to suppress the display (e.g., if several variables
in one or several PLC cycles need to be entered in the string without any display output).
Signals
Byte 1 is supplied by the output signals of the HHU and the character specifications are
supplied by the block. These may not be written by the PLC user program.
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