Toshiba AD268 User Manual page 79

PART 3 TC218
Gain calibration value & Offset calibration value: ( 100mV input only)
(Gain: H8000 to H8007, Offset: H8008 to H800F)
For the 100mV input, the gain and offset calibration is possible.
In the TC218, the A/D conversion data is calculated as follows.
Analog input
When the gain calibration value is G and the offset calibration value is O, the conversion
calculation is performed in the TC218 as follows.
X = (X
2 1
X : Initial A/D conversion value
1
X : Gain/offset processed value
2
O: Offset calibration value (buffer memory address H8008 to H800F)
G: Gain calibration value (buffer memory address H8000 to H8007)
The data setting range of the gain and offset calibration value are as follows.
Input type
100mV
Thermocouple
Input type
100mV
Thermocouple
CTi Automation - Phone: 800.894.0412 - Fax: 208.368.0415 - Web: www.ctiautomation.net - Email: info@ctiautomation.net
A/D
conversion
+ O) G / 32000
Gain calibration value
Upper limit
Default value
Lower limit
Not applicable
Offset calibration value
Upper limit
Default value
Lower limit
Not applicable
Offset
processing processing
32000
32000
10000
3200
0
-3200
6. Parameters
A/D conversion data
Gain
(read by T2 CPU)
User's Manual
77