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8.14 Difference Conversion Function
The digital operation value at the start of this function is treated as "0" (reference value). Thereafter, the difference
between the actual digital operation value and the reference value is stored as the digital operation value.
(1) How the difference conversion function
When the difference conversion starts, the digital operation value at that time (the data stored inside the A/D
converter module before difference conversion) is determined as the difference conversion reference value. The
value acquired by subtracting the difference conversion reference value from the digital operation value is stored
in CH Digital operation value (RWr2 to RWr5, RWr12 to RWr15). CH Digital operation value (RWr2 to RWr5,
RWr12 to RWr15) at the start of this function is "0" (because the digital operation value equals to the difference
conversion reference value at the start).
0
Time
CH Digital operation value
(RWr2 to RWr5, RWr12 to RWr15)
CH Digital output value
CH Difference conversion reference
value
(RWr6 to RWr9, RWr16 to RWr19)
CH Difference conversion state flag
(RX14 to RX17, RX24 to RX27)
CH Digital operation value
(RWr2 to RWr5, RWr12 to RWr15)
CH Difference conversion trigger
(RY14 to RY17, RY24 to RY27)
Digital operation value
16000
8000
6000
2000
0
4800 6000 8000 8000 60006000
4800 0 2000 2000 60006000
OFF OFF
0 6000
-2000
ON
OFF OFF
ON
Digital operation value
after difference conversion
Digital operation value
Difference conversion
reference value
=-
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