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E831-RTU(8080T-485) Switching Signal Digital 16-channel IO controller
[Introduction]：This chapter is a quick start introduction to E831-RTU (8080T-485) series products. It is recommended that users read this chapter and follow the instructions once and they will have a systematic understanding of the module. Users can also choose chapters they are interested in to read asneeded. For specific details and instructions, please refer to the subsequent sections.
| No. | Ports and other definitions | Function | Description |
|---|---|---|---|
| 1 | PE | Connect with the earth | Connect with the earth |
| 2 | GND | Crimped power input negative | Power supply reference ground |
| 3 | VCC | Crimped power input positive | Power input，DC 8V~28V， 12V/24V recommended |
| 4 | DO8 | Digital output channel 8 | NPN transistor open collector output channel 8 |
| 5 | DO7 | Digital output channel 7 | NPN transistor open collector output channel 7 |
| 6 | DO6 | Digital output channel 6 | NPN transistor open collector output channel 6 |
| 7 | DO5 | Digital output channel 5 | NPN transistor open collector output channel 5 |
| 8 | DO4 | Digital output channel 4 | NPN transistor open collector output channel 4 |
| 9 | DO3 | Digital output channel 3 | NPN transistor open collector output channel 3 |
| 10 | DO2 | Digital output channel 2 | NPN transistor open collector output channel 2 |
| 11 | DO1 | Digital output channel 1 | NPN transistor open collector output channel 1 |
| 12 | GND | Signal reference ground | Signal reference ground |
| 13 | RS485-G | RS485 Signal reference ground | RS485 Signal reference ground,can left unconnected |
| 14 | RS485-B | RS485 Interface B | RS485 interface B is connected to device B interface |
| 15 | RS485-A | RS485 InterfaceA | RS485 interface A is connected to device A interface |
| 16 | DI8 | Digital input channel 8 | Form dry contact with DIG |
| 17 | DI7 | Digital input channel 7 | Form dry contact with DIG |
| 18 | DI6 | Digital input channel 6 | Form dry contact with DIG |
| 19 | DI5 | Digital input channel 5 | Form dry contact with DIG |
| 20 | DI4 | Digital input channel 4 | Form dry contact with DIG |
| 21 | DI3 | Digital input channel 3 | Form dry contact with DIG |
| 22 | Digital input channel 2 | Form dry contact with DIG | Form dry contact with DIG |
| 23 | DI1 | Digital input channel 1 | Form dry contact with DIG |
| 24 | DIG | Digital input signal reference ground | Digital input signal reference ground, used with DI terminal |
| LED light | ||
|---|---|---|
| DATA | Serial data indication | Two-color light, green indicates data reception, blue indicates data transmission |
| I/O | I / O status indicator | 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. |
| PWR | Power indicator | Red LED，Always on |