Scaling Function - Mitsubishi Electric MELSEC-Q series User Manual

4.9

Scaling Function

A digital output value can be scaled into a value within the range of the set scaling upper limit value to lower limit value.
The sequence programming for scale conversion can be omitted.
The scale-converted values are stored in CH Scaling value (Un\G54 to Un\G61).
(1) Concept of scaling setting
Set values corresponding to the lower limit value (0) of the input range to CH Scaling lower limit value (Un\G62,
Un\G64, Un\G66, Un\G68, Un\G70, Un\G72, Un\G74, Un\G76).
Set values corresponding to the upper limit value (10000) of the input range to CH Scaling upper limit value
(Un\G63, Un\G65, Un\G67, Un\G69, Un\G71, Un\G73, Un\G75, Un\G77).
(2) Calculation method for a scaling value
A value is performed scale conversion using the following formula. The scaled values after the decimal point are
rounded off.
Item
D
x
D
Max
S
H
S
L
(3) Setting procedure
1.
Set Enable (0) to Conversion enable/disable setting (Un\G0).
2.
Set Enable (0) to Scaling enable/disable setting (Un\G53).
3.
Set values to CH1 Scaling lower limit value (Un\G62) to CH8 Scaling upper limit value (Un\G77).

CH Scaling lower limit value (Un\G62, Un\G64, Un\G66, Un\G68, Un\G70, Un\G72,
Un\G74, Un\G76)

CH Scaling upper limit value (Un\G63, Un\G65, Un\G67, Un\G69, Un\G71, Un\G73,
Un\G75, Un\G77)
4.
Turn on then off Operating condition setting request (Y9).
● The maximum resolution does not change regardless of the scaling upper limit value and the scaling lower limit value to
be set.
Performance specifications (
● Digital output values can be scaled in a negative slope so that the values become as follows: Scaling lower limit value >
Scaling upper limit value
48
D
X
Scaling value =
D
Digital output value
Maximum digital output value for the used input range (10000)
Scaling upper limit value
Scaling lower limit value
Item
Page 25, Section 3.2.1)
( )
S - S
H L
+ S
L
Max
Description
-32000 to 32000
Setting range