SEL_CHAR block
Short summary
Name |
SEL_CHAR |
→POU type |
|
Category |
|
Conform to →IEC-standard |
no restrictions |
Graphical interface |
|
Available since |
|
Functionality
The block makes a binary selection – analogous to the SEL block. In contrast to that block, SEL_CHAR allows the connection with CHAR only (for IN0 and IN1).
Inputs, return value
|
Identifier |
Description |
|
Inputs: |
G |
BOOL |
selector |
IN1 |
CHAR |
1st value |
|
IN2 |
CHAR |
2nd value |
|
Return value: |
– |
CHAR |
|
Input EN and output ENO are available when →calling the block. See "Execution control: EN, ENO" for information on input EN and output ENO.
Example for usage within ST-editor
PROGRAM Test
VAR
result1 : CHAR;
result2 : CHAR;
END_VAR
result1 := SEL_CHAR(G := FALSE, IN0 :=
'A'
, IN1 :=
'B'
); (* The variable
'result1'
evaluates to
''
A
''
. *)
result2 := SEL_CHAR(G := TRUE, IN0 :=
'A'
, IN1 :=
'B'
); (* The variable
'result2'
evaluates to
''
B
''
. *)
END_PROGRAM
When creating your application within the ST-editor, enter a call of a block by typing the text as requested by the syntax or use Content Assist.