Toshiba AD268 User Manual page 24

5. I/O Allocation and Programming
1 to 5V / 4 to 20mA range:
Upper limit
Full scale (positive)
Lower limit
-10.2V
22
Analog I/O Modules (AD268 / DA264 / TC218)
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Input voltage/current
1 to 5 V
+5.1196 V
:
+5 V
:
+1.0003125 V
1 V
Digital value
H337F
13183
Lower limit
0
1V
4mA
A/D conversion data
4 to 20 mA Hexadecimal
+20.479 mA H337F
: :
+20 mA H3200
: :
+4.00125 mA H0001
4 mA H0000
+5V
20mA
Upper limit
H3200
12800
Analog input value
+10.2V
+5.1196V
20.479mA
PART 1 AD268
Resolution
Integer
13183
:
12800 0.3125 mV / bit
: 1.25 A / bit
1
0
1 to 5V range:
D = 3200 A - 3200
D: Digital data
A: Analog signal (V)
4 to 20mA range:
D = 800 A - 3200
D: Digital data
A: Analog signal (mA)