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Mitsubishi MELSEC-A A64RD3C User Manual page 70

Pt100 input module

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4. LINKING
TO THE AnACPU (WITH DEDICATED INSTRUCTIONS)
AND THE AJ71 PT32-S3
MELSEC-A
4.4.3
Averaging timdcount (addresses
2 to 5)
Addresses 2 to 5 are used to set the length of time or the number of times of
averaging.
(1) When the power is turned ON, the averaging time and averaging count
are set to
0.
(2) The setting ranges are as indicated below:
Averaging in terms of time
: 160 to 32000 msec
Averaging in terms of count
: 1 to 800 times
ICAUTION
1
I
t-------J
I
If a value outside the above range has been written, a setting error occurs
and the buffer is overwritten.
However, the A64RDC performs conversion processing at the averaging
time or count previously set.
4.4.4
Detected temperature value (addresses
6
to 17)
Addresses 6 to 17 are used to store detected temperature values which are
handled in 16-bit or 32-bit data.
(1)
16-bit data (addresses 6 to 9)
A detected temperature value is multiplied by 10 and represented in the
range from -1800 to 6000 of 16-bit signed binary numbers.
If a detected temperature value
is negative, it is represented
in a
complement of 2.
Example 1 :
If a detected temperature value
is 123.025"C (253.445"F), 1230 is
stored.
b15
b14
b13
b12
bll
b10
b9
b8
b7
b6
b5
b4
b3
b2
bl
bO
0
0
0
0
0
1
0
0
1
1
0
0
1
1
1
0
r
Example 2:
If a detected temperature value is
-1
23.025"C (-1 89.445"F), -1 230 is
stored.
b15
b14
b13
b12
bl1
blO
b9
b8
b7
b6
b5
b4
b3
b2
bl
bO
1
1
1
1
1
0
1
1
0
0
1
1
0
0
1
0
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