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3 SPECIFICATIONS
MELSEC-Q
3.2.1 Temperature conversion system
(1) Sampling
processing
A temperature input value is converted into a temperature one by one and its
measured temperature value is stored into buffer memory.
Sampling processing time varies with the number of used channels (number of
channels set to enable temperature conversion).
(Processing time) = (number of used channels) (40ms)
[Example]
Sampling time is 120ms when three channels, channels 1, 2 and 4, are enabled for
conversion.
3 channels 40ms = 120ms
(2) Averaging
processing
(a) Time-specified averaging processing
When this option is specified for a channel, values input from the channel
are converted into temperature values consecutively for the preset length of
time. Then, the total amount of values after eliminating the maximum and
minimum values is averaged to be stored into the buffer memory.
Averaging processing requires at least 2 times of conversion processing
excluding the maximum and the minimum values.
The processing count within the preset time varies with the number of used
channels (number of channels set to enable temperature conversion).
(Processing count) =
(preset time)
(number of used channels) (40ms)
Setting range of preset time is 160 to 5000ms.
When setting a value out of the setting range, an error (error code 20 )
occurs.
[Example]
The sampling count is 4.75 when four channels, channels 1, 2, 3 and 4, are
enabled for conversion and the preset time is 760ms.
760ms ÷ (4 channels 40ms) = 4.75
Since the fractional portion of an indivisible value is dropped, the sampling
count is 4 times.
(b) Count-specified averaging processing
The time taken to store a count-averaged value into buffer memory varies
with the number of used channels (number of channels set to enable
temperature conversion).
(Processing time) = (preset count) (number of used channels) (40ms)
Setting range of preset count is 4 to 62500times.
When setting a value out of the setting range, an error (error code 30 )
occurs.
[Example]
An average value is output ever 320ms when two channels, channels 3 and 4,
are enabled for conversion and the preset count is 4.
4 times (2 channels 40ms) = 320ms
Содержание Q64RD
Страница 2: ......
Страница 99: ...5 17 5 17 5 UTILITY PACKAGE GX Configurator TI MELSEC Q X Y Monitor Test 1 OMC refresh ...
Страница 108: ...6 3 6 3 6 PROGRAMMING MELSEC Q 2 Program example 6 1 2 Program example used when utility package is not used ...
Страница 113: ...6 8 6 8 6 PROGRAMMING MELSEC Q 2 Program example ...
Страница 114: ...6 9 6 9 6 PROGRAMMING MELSEC Q ...
Страница 178: ...App 19 App 19 APPENDICES MELSEC Q Appendix 3 External Dimension Diagram 1 Q64RD Q64RD G Unit mm ...
Страница 181: ...WARRANTY ...
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