Scaling Function - Mitsubishi Electric Q68AD-G User Manual

3
SPECIFICATIONS
3.2.6

Scaling Function

(1) With this function, A/D conversion values are converted to rate values and loaded into
(2) A digital value stored in CH
(3) The scaling function is used for processed values when using the averaging
(4) The setting of CH
Example 1) Input range setting: 0 to 20mA, or 4 to
20mA (Q68AD-G, Q66AD-DG)
Digital output value
Scaling
upper limit value
Scaling
lower limit value
Example 1) Gain value: 0mA, Offset value:
24mA (Q66AD-DG)
Digital output value
Scaling
upper limit value
Scaling
lower limit value
the buffer memory.
a value in the range set by CH
The converted value is stored in CH
Un\G61).
processing or primary delay filter.
scaling upper/lower limit value (Un\G62 to Un\G77) varies
depending on whether to use the factory default range setting or the user range
setting for the input range.
(a) When using the factory default setting for the input range
Set a value that should correspond to the upper limit of digital output as the
scaling upper limit value, and a value that should correspond to the lower limit as
the scaling lower limit value.
Analig input
current (mA)
(b) When using the user range setting for the input range
Set a value corresponding to the gain or offset value to the scaling upper or lower
limit value respectively.
Analig input
current (mA)
digital output value (Un\G11 to Un\G18) is converted to
scaling upper/lower limit value (Un\G62 to Un\G77).
scaling value storage area (Un\G54 to
Example 2) Input range setting: -10 to 10V
(Q68AD-G)
Digital output value
Scaling
upper limit value
Scaling
-
lower limit value
Example 2) Gain value: 0V, Offset value:
10V (Q68AD-G)
Digital output value
Scaling
upper limit value
Scaling
lower limit value
-
3.2 Function List
3.2.6 Scaling Function
1
2
3
4
5
Analig input
current (mA)
6
7
8
Analig input
current (mA)
3
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