4.6 Digital input(DI) function
The CPM-80 series meter have four digital input ports and can be expanded up to eight
ports(there are no relay function when at eight ports due to the multiplexed pins). The
setting operation is completed by setting the corresponding register or from the meter front.
DI contactor capacity: 12V/5mA
4.6.1 DI function setting
Table 4-5 indicates the setting contents and addresses of DI. If no DI5 ~ DI8 is selected,
the corresponding register settings will be invalid.
▼ Table 4-5
Mode setting: Each DI has 10 functions for designation, values clearing, relay reset,
general DI function, and light on screen backlight or waveform capture.
Debounce time setting: That is the input signal is established after how long to confirm
the establishment of input, mainly to eliminate bounce generated when the mechanical
switch on. The setting range is an integer from 0 to 99, the unit time is 8mS. When set to 0,
there is no delay, and the specified function is executed immediately. For example, set the
debounce time is 20, that is 20×8 = 160mS.
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