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6-6
Programming Examples
Publication 1746-UM005B-EN-P - June 2004
Using the Scale (SCL) Instruction
Rung 2:0
Check for below allowable range.
|
|
| +LES–––––––––––––––+
|–+LESS THAN
+–––––––––––––––––––––––––––––––––––––––––––––––––( )–––––|
| |Source A
I:1.1|
| |
0|
| |Source B
14344|
| |
|
| +––––––––––––––––––+
Rung 2:1
Check for above allowable range.
|
|
| +GRT–––––––––––––––+
|–+GREATER THAN
+–––––––––––––––––––––––––––––––––––––––––––––––––( )–––––|
| |Source A
I:1.1|
| |
0|
| |Source B
16383|
| |
|
| +––––––––––––––––––+
Rung 2:2
Turn on the below range alarm output when the analog
input is below the acceptible range.
| Below
| range flag
|
B3
|––––] [––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––( )––|
|
0
Rung 2:3
Turn on the above range alarm output when the analog
input is above the acceptible range.
| Above
| range flag
|
B3
|––––] [––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––( )––|
|
1
Rung 2:4
Scale analog input value and process the result only
when it is within acceptible range.
| Below
|Above
| range flag
|range flag
|
B3
B3
|––––]/[––––––––]/[–––––––––––––––––––––––––––––––––––––––+SCALE
|
0
1
|
(2:0)
(2:1)
|
|
|
|
|
|
|
|
Rung 2:5
|
|–––––––––––––––––––––––––––––––––––––+END+––––––––––––––––––––––––––––––––––––|
|
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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