Scaling Function - Mitsubishi Electric MELSEC iQ-F FX5 User Manual

Scaling function

Performs scale conversion on digital output values within the range from a scaling upper limit value to a scaling lower limit
value, both of which are set at desired values.
The converted values are stored in 'CH1 Digital operation value' (Un\G402).
Concept of scaling setting
The concepts of each setting item are described below.
• For the scaling upper limit value, set a value corresponding to the upper limit value after the input range conversion.
• For the scaling lower limit value, set a value corresponding to the lower limit value after the input range conversion.
The upper and lower limits of each range are shown below.
Input type/range
Current 4 to 20 mA
0 to 20 mA
-20 to +20 mA
Voltage 0 to 10 V
0 to 5 V
1 to 5 V
-10 to +10 V
Resistance Pt100
temperature
detector
Ni100
Thermocouple K
J
T
B
R
S
Ex.
The scaling value with the following conditions
• Set the input type/range to voltage (0 to 5 V)
• A value of 20000 is set in Scaling upper limit value, and 4000 is set in Scaling lower limit value.
4000 is stored when the voltage input is 0 V and 20000 is stored when the voltage input is 5 V in 'CH1 digital operation value'
(Un\G402).
Lower limit value
Input value
4 mA
0 mA
-20 mA
0 V
0 V
1 V
-10 V
Centigrade -200
Fahrenheit -328
Centigrade -60
Fahrenheit -76
Centigrade -270
Fahrenheit -454
Centigrade -210
Fahrenheit -346
Centigrade -270
Fahrenheit -454
Centigrade 0
Fahrenheit +32
Centigrade -50
Fahrenheit -58
Centigrade -50
Fahrenheit -58
Upper limit value
Digital output value Input value
0 20 mA
0 20 mA
-32000 20 mA
0 10 V
0 5 V
0 5 V
-32000 10 V
-2000 850
-3280 1562
-600 250
-760 482
-2700 1370
-4540 2498
-2100 1130
-3460 2066
-2700 400
-4540 752
0 1710
+320 3110
-500 1710
-580 3110
-500 1710
-580 3110
3
Digital output value
32000
32000
32000
32000
32000
32000
32000
8500
15620
2500
4820
13700
24980
11300
20660
4000
7520
17100
31100
17100
31100
17100
31100
3 FX5-8AD
345
3.4 Functions