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2.
SPECIFICATIONS
MELSEC-A
(2) Time averaging processing
Data conversion in the channel which is specified for time averaging is
done in the time set with the PC CPU for averaging processing.
The average of the converted values (except the maximum and mini-
mum values) is stored in buffer memory.
Temperature
average
-
1
I
U
d
1
Set
time
I
+
Time (msec)
Data
Maximum
value
Minimum
value
Average
=
185
+
210
+
215+ 205
+
200
+
195
+
180
=
198
7
-
I
Stored in buffer.
When an average is being calculated, the previous average is stored in
buffer memory.
The number of sampling times varies with the number of channels and the setting time.
(setting time)
(number of channels used)
x
(40 msec/channel)
Number of sampling times
=
The setting time is in 10 msec units. Values less than 10 msec are rounded down.
i
The number of sampling times
=
I
3
channels
X
40
1100 msec
I
=
9.17
I
:
The number of sampling
times
is
rounded
down
to
9.
I
2 - 7
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