SEL_TOD block
Short summary
Name |
SEL_TOD |
→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_TOD allows the connection with TOD only (for IN0 and IN1).
Inputs, return value
|
Identifier |
Description |
|
Inputs: |
G |
BOOL |
selector |
IN1 |
TOD |
1st value |
|
IN2 |
TOD |
2nd value |
|
Return value: |
– |
TOD |
|
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 : TIME_OF_DAY;
result2 : TIME_OF_DAY;
END_VAR
result1 := SEL_TOD(G := FALSE, IN0 := TOD#
00
:
01
:
00
, IN1 := TOD#
00
:
02
:
00
); (* The variable
'result1'
evaluates to
'TOD#00:01:00'
. *)
result2 := SEL_TOD(G := TRUE, IN0 := TOD#
00
:
01
:
00
, IN1 := TOD#
00
:
02
:
00
); (* The variable
'result2'
evaluates to
'TOD#00:02:00'
. *)
END_PROGRAM
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