- Conversion data switch flag
When transferring the data from the Thermocouple Unit to the Control Unit, it is converted to the 32-bit data
including the channel information. The data for WX2 can be used as is, but the following process is required
for the WX3 data since its higher 2 bits are used as a conversion data switch flag;
- What to do
When the temperature data is negative, the data for WX2 and WX3 will be 2’s complement.
That is, bit F for WX2 and bit D for WX3 will be “1”.
The higher 2 bits for WX3 are used as the conversion data switch flag, so that masking using “00” is
needed when the conversion data is positive, using “11” when negative.
Data for CH3
WX3
→
Data after masked
1 0100000000000001
→
0000000000000001
-1 0111111111111111
→
1111111111111111
The above values to be masked.
Conversion data switch flag
Note:
X3D, X3E, X3F, WX2 and WX3 are changed depending on where the Thermocouple Unit is
recognizes Positive or
Negative at bit D.
installed.
11
