Valid conversion value retention (Address "6")
Valid conversion value retention (Address "6")
Address | Function | R/W | |
Hex | Dec | ||
06H | 6 | Valid conversion value retention | R/W |
Bits | |||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 09 | 08 | 07 | 06 | 05 | 04 | 03 | 02 | 01 | 00 |
CH16 | CH15 | CH14 | CH13 | CH12 | CH11 | CH10 | CH9 | CH8 | CH7 | CH6 | CH5 | CH4 | CH3 | CH2 | CH1 |
0 : Disable / 1 : Enable
In case of 8-channel module, b8~b15(CH9. ~ CH.16) are not used.
This is a feature to retain the last value if the latest A/D measured value exceeds the valid range.
Example : When ‘Unsigned’ format (0~16000) and input signal range is 4~20mA, if the input current goes from 12mA to 3mA
Measure count | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
Measured Value | 8,000 | 8,000 | 8,000 | 4,000 | Negative Value | Negative Value | Negative Value |
Output | 8,000 | 8,000 | 8,000 | 4,000 | 4,000 | 4,000 | 4,000 |
Note | Normal | Normal | Normal | Normal | Retains last value | Retains last value | Retains last value |
The table above is just an example to describe "Valid conversion value retention" feature. The retained value may vary according to the time spent and the sampling speed when the value switched from 12mA to 3mA.