AFE-R761 DI/DO

Hardware pin definition：

There are 4x digital inputs and 4x digital outputs for on/off triggering and status reading.

Digital Input

4 x DI w 2500VDC isolation protection (terminal block)
- Wet contact: Logic: 0~3VDC(max);Logic 1: 10~30VDC
- Dry contact: Logic 0: Shorted to GND; Logic 1: Open (Default)
Digital Output

4 x DO w 2500VDC isolation protection (terminal block)
- Output voltage: 5-30VDC
- Output capability Sink(NPN): 500mA per channel

SW Function

Show DI/DO ports

# #---- Show DI ports ----# #
# cd /dev/
# ls DI*
DI1 DI2 DI3 DI4

# #---- Show DO ports ----# #
# cd /dev/
# ls DO*
DO1 DO2 DO3 DO4

Get DI Status

Take DI1 for example

# cat /dev/DI1
1

Note!

1. DI ports have two types : Dry or Wet.
2. For Dry ports
0 means the external circuit is conductive.
1 means the external circuit is NOT conductive.
3. For Wet ports
0 means the voltage of input is between 10-30V
1 means the voltage of input is between 0-3V
3-10V is unstable status.

Set and Get DO Status

Take DO1 for example:（The DO interface of UIO-4033 is of sink type，Default state: No output）

# #---- Set 0 to DO1 ----# #
# echo 0 > /dev/DO1

# #---- Set 1 to DO1 ----# #
# echo 1 > /dev/DO1

# #---- Get DO1 status ----# #
# cat /dev/DO1
1

Note：

Setting 0 to make the external circuit NOT conductive.
Setting 1 to make the external circuit conductive.

The wiring and measurement methods can be referred to as shown in the following diagram.

Note：

1、There are no specific requirements for the power supply. Just make sure it is within the product POR specification of 5 to 30V DC (and ensure that the overshoot at the moment of power-on does not exceed 30V of the POR). Please be sure to confirm the overshoot at power-on of the POWER Supply being used.

2、When echo is "0", the DO on the UIO is open mode and the level state is high.

3、When echo is "1", the DO on the UIO is closed mode and the level is low.