Di Input; Input Filtering; Do Output; Ai Input - Ebyte M31 Series User Manual

Chengdu Ebyte Electronic Technology Co., Ltd.

4.2. DI input

4.2.1. Input filtering

When the switch input DI collects signals, it needs to be maintained for multiple sampling periods before
confirmation. The filter parameters can be set in the range of 1 to 16 (default is 6 sampling periods, 6*1kHz).
It can be configured through instructions and the host computer.

4.3. DO output

The output mode of the relay .

4.4. AI input

4.4.1. AI scope

Analog input AI measurement current signal, acquisition range 0~20mA or 4~20mA, accuracy 3‰, resolution
12 bits. Use single-ended input, sampling frequency 10Hz, input impedance 100Ω.
Set the sampling range of all AI channels, valid values are 1 and 0 (default 0).
Configured as 0: means 0~20mA
Configured as 1: indicates 4~20mA
[Note] AI configuration instructions
(1) The AI sampling range of each channel can be set . When the AI channel sampling range is configured as
4~20mA sampling, if the current signal is lower than 3.5 mA , it will be displayed as 0, and if it is higher than 3.5
mA and lower than 4mA, it will be displayed as 4 . There are no conversion restrictions for signals greater than
20mA, but they cannot exceed 25mA (exceeding 25mA will risk equipment damage).
Copyright © 2012 , Chengdu Ebyte Electronic Technology Co., Ltd.
Distributed IO Host (M31 Series) User Manual
27