[Introduction]:E90-DTU (230SL42) is a truly high-quality industrial-grade wireless data transmission radio (the radio won the national design patent ZL202030009845.3). It adopts LORA spread spectrum technology and its strong anti-interference ability makes wireless communication more convenient in industrial sites. Stable and reliable. The radio has a variety of transmission methods and provides transparent RS232/RS485 interfaces. LoRa direct sequence spread spectrum technology will bring longer communication distance and has the advantage of strong anti-interference ability. It has data encryption function and FEC forward error correction algorithm, which greatly improves security, reliability and transmission distance.
No | Name | Function | Instruction |
1 | GND | Pressed wire power input negative pole | Power reference ground |
2 | VCC | Pressed line power input positive pole | Power input (12V/4A) |
3 | MOD | Mode control | Floating, normal mode; grounded, configuration mode |
4 | RS485 G | RS485 interface G | RS485 interface G is connected to the GND interface of the device (recommended connection) |
5 | RS485 B | RS485 interface B | RS485 interface B is connected to device B interface |
6 | RS485 A | RS485 interface A | RS485 interface A is connected to device A interface |
7 | RS232 | RS232 interface | Standard RS232 interface |
8 | ANT | SMA-K interface | Externally threaded inner hole, length 10mm, characteristic impedance 50Ω |
9 | UPDATE | - | Hidden buttons, users don’t need to care |
10 | PWR | Power Indicator | Red, lights up when power is on |
11 | TXD | Serial data sending indicator light | Yellow, flashing when sending data |
12 | RXD | Serial port data receiving indicator light | Yellow, flashes when receiving data |
13 | ERR | warning light | The antenna is not connected or the voltage or temperature is abnormal. After the abnormality of the unconnected antenna is resolved, it needs to be powered on again to work normally. |