Ebyte E831-RTU(8080T-485) User Manual page 12

8 DO4
9 DO3
10 DO2
11 DO1
12 GND
13 RS485-G
14 RS485-B
15 RS485-A
16 DI8
17 DI7
18 DI6
19 DI5
20 DI4
21 DI3
22 DI2
23 DI1
24 DIG
DATA Serial data indication
I/O I / O status indicator
PWR Power indicator
Note：
Grounding: It is recommended to connect the case to the earth
Digital output channel 4
Digital output channel 3
Digital output channel 2
Digital output channel 1
Signal reference ground
RS485 Signal reference ground
RS485 Interface B
RS485 Interface A
Digital input channel 8
Digital input channel 7
Digital input channel 6
Digital input channel 5
Digital input channel 4
Digital input channel 3
Digital input channel 2
Digital input channel 1
Digital input signal reference
ground
LED light
Two-color light, green indicates data reception, blue indicates
data transmission
Two-color light, any one input has a signal, green indicator is on,
any one output has a signal, blue indicator is on, when there is
both output and input, both lights on at the same time, the
indicator is cyan.
Red LED，Always on
NPN transistor open collector
output channel 4
NPN transistor open collector
output channel 3
NPN transistor open collector
output channel 2
NPN transistor open collector
output channel 1
Signal reference ground
RS485 Signal reference ground,can
left unconnected
RS485 interface B is connected to
device B interface
RS485 interface A is connected to
device A interface
Form dry contact with DIG
Form dry contact with DIG
Form dry contact with DIG
Form dry contact with DIG
Form dry contact with DIG
Form dry contact with DIG
Form dry contact with DIG
Form dry contact with DIG
Digital input signal reference
ground, used with DI terminal