LX3V-2PT2DAI-BD
6
WECON Technology Co., Ltd.
2)
The PT part only supports PT100;
3)
The DA part only supports current output;
4)
When M8112-M8115 is ON, the channels will not work, all show “0”;
5)
Don’t try to change the value in D8112 or D8113, when finished the A/D conversion;
The following project sets CH1 and CH2 as PT100 input, and the value is storage in D0 and D2.
DA conversion:
If the data are not stored into D0 or D2, then D8112, D8113 and D8114, D8115 can be
simultaneously used on setting values and other orders, such as timer/counter.
6.2 Examples of Applications
Since the LX3V-2PT2DAI-BD does not have offset and gain functions, if it needs for the values out of
the standard specifications, Additional programming orders will be needed to multiply or divide the
converted value.
Caution:
Since the use of additional programming orders, the converted precision and resolution of the
analog value are different with the specifications.
The original range of the analog output does not change.
1)
Thermocouple input mode
In RTD input mode, 2PT covert a analog value to a digital value in degrees Celsius. If in the program
was a degree Fahrenheit as a unit it needs to be converted to Celsius value.
Set CH1 as K-type thermocouple input mode
Set CH1 as K-type thermocouple input mode
Set the digital value of D0 into analog value
Set the digital value of D2 into analog value
Set channel 1 as current output (4~20mA)
Set channel 2 as current output (4~20mA)
Save the value of D0 to channel 1
Save the value of D2 to channel 2
