Chapter 6. BUFFER MEMORY CONFIGURATION AND FUNCTIONS
6 - 5
6.2.3 Temperature Conversion Value
1) This area performs sampling processing of the temperature value that is inputted through the
thermocouple connected to the terminal block of a channel and stores the value of 10 times of the real
temperature value.
If a real temperature is 123.4°C the stored value is 1234.
2) The followings show the configuration of each address.
3) If the temperature conversion specifying a channel is changed from temperature conversion enable
into temperature conversion disable, the temperature conversion value just before the change
remains.
6.2.4 Digital Conversion Value
1) A temperature value that is inputted through the thermocouple connected to the terminal block of a
channel is converted into a value between 0 to 16000, and then the converted value is stored. That
conversion is called digital conversion.
2) The digital conversion value converted to a value between 0 to 16000 can be used as a process
value of the PID control module.
3) The digital conversion value and the detected temperature value have the following arithmetic
relation.
Digital conversion value = (16000/overall measuring temperature range)
× (temperature conversion value – minimum
measuring temperature)
4) If the temperature conversion specifying a channel is changed from enable into disable, the digital
conversion value before the change remains
If a real temperature is 123.4°C when using a type K thermocouple, since the
temperature conversion value is 1234, overall temperature range is 14000 and
minimum measuring temperature is –2000, then the digital conversion value is
(16000/14000) × [1234-(-2000)] , and it is equal to 3696 (round off at the first digit of fraction) .
Thermocouple type K J E T B R S
overall measuring
temperature range
14000
(-2000 to
12000)
10000
(-2000 to
8000)
7500
(-1500 to
6000)
6000
(-2000 to
4000)
14000
(4000 to
18000)
17500
(0 to
17500)
17500
(0 to
17500)
Minimum measuring
temperature
-2000 -2000 -1500 -2000 4000 0 0
REMARK
REMARK
To Next Page
Loading...
Need help?
General
