Uso De La Instrucción De Escalar (Scl) - Allen-Bradley SLC 500 Manual Del Usuario

6–6 Ejemplos de programación
Rung 2:0
Check for below allowable range.
|
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| +LES–––––––––––––––+
|–+LESS THAN
| |Source A
| |
| |Source B
| |
| +––––––––––––––––––+
Rung 2:1
Check for above allowable range.
|
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| +GRT–––––––––––––––+
|–+GREATER THAN
| |Source A
| |
| |Source B
| |
| +––––––––––––––––––+
Rung 2:2
Turn on the below range alarm output when the analog
input is below the acceptible range.
| Below
| range flag
|
|––––] [––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––( )––|
|
Rung 2:3
Turn on the above range alarm output when the analog
input is above the acceptible range.
| Above
| range flag
|
|––––] [––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––( )––|
|
Rung 2:4
Scale analog input value and process the result only
when it is within acceptible range.
| Below
| range flag
|
|––––]/[––––––––]/[–––––––––––––––––––––––––––––––––––––––+SCALE
|
| (2:0)
|
|
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Rung 2:5
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|–––––––––––––––––––––––––––––––––––––+END+––––––––––––––––––––––––––––––––––––|
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Publicación 1746 6.4ES - Enero de 1996
Uso de la instrucción de escalar (SCL)
+–––––––––––––––––––––––––––––––––––––––––––––––––( )–––––|
I:1.1|
0|
14344|
|
+–––––––––––––––––––––––––––––––––––––––––––––––––( )–––––|
I:1.1|
0|
16383|
|
B3
0
B3
1
|Above
|range flag
B3 B3
0 1
(2:1)
Below |
range flag |
B3 |
0 |
|
|
|
|
Above |
range flag |
B3 |
1 |
|
|
|
|
Below |
range alarm |
O:2 |
0 |
Above |
range alarm |
O:2 |
1 |
Scale |
analog input |
+SCL–––––––––––––––+ |
+–|
|Source I:1.1| |
| 0| |
|Rate [/10000] 122| |
| | |
|Offset 100| |
| | |
|Dest N7:0| |
| 0| |
+––––––––––––––––––+ |
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