User Manual

LOGO! functions
4.4 Special functions list - SF
LOGO!
Manual, 06/2014, A5E33039675
131
Example of analog values
Process variable
Voltage (V)
Internal value
Gain
Offset
Value shown (Ax)
-30 °C
0 °C
+70 °C
0
3
10
0
300
1000
0.1
0.1
0.1
-30
-30
-30
-30
0
70
1000 mbar
3700 mbar
5000 mbar
0
6.75
10
0
675
1000
4
4
4
1000
1000
1000
1000
3700
5000
0
5
10
0
500
1000
0.01
0.01
0.01
0
0
0
0
5
10
0
5
10
0
500
1000
1
1
1
0
0
0
0
500
1000
0
5
10
0
500
1000
10
10
10
0
0
0
0
5000
10000
0
5
10
0
500
1000
0.01
0.01
0.01
5
5
5
5
10
15
0
5
10
0
500
1000
1
1
1
500
500
500
500
1000
1500
0
5
10
0
500
1000
1
1
1
-200
-200
-200
-200
300
800
0
10
0
1000
10
10
-10000
-10000
-10000
0
0.02
0.02
0.02
0.02
2
2
2
2
0.01
0.1
1
10
0
0
0
0
0
0
2
20
For further information on a sample application, refer to the "Analog comparator (Page 188)"
topic.
For further information on analog inputs, refer to the Constants and connectors (Page 115)
topic.
4.4
Special functions list - SF
When you create your circuit program in LOGO!, you find the special function blocks in the
SF list.
You can invert the inputs of SFs individually, that is, the circuit program converts a logical "1"
at the input into a logical "0"; a logical "0" it converts into a logical "1". See the programming
example in topic "Circuit program input (Page 69)".
The table also specifies whether the relevant function can be set retentive (Rem). The
following SFs are available: