E820-DTU(2I2-433L)-V8 RS485 analog signal transmission
[Acquisition Type]： Analog
[Acquisition range]： 4~20mA
[Interface type]： RS485
[Number of acquisition channels]： 2 channels
[Product weight]： 242±5g
[Introduction]：E820-DTU(2I2-433L)-V8 is a remote-controlling device supporting analog quantity following, controlling, and collecting.The shell adopts three-proof coating, which is Anti-Fungal, Anti-Humidity, and Anti-Salt Spray. Under controlling and collecting mode, it supports Modbus RTU protocol. This product features easy-to-use, and it can be integrated into user systems so as to realize remote wireless controlling via 433MHz band.
| Pin No. | Pin Item | Function | Description |
|---|---|---|---|
| 1 | AI1+ | Analog signal input channel 1 positive | Analog signal input pin, forms input with AI1- |
| 2 | AI1- | Analog signal input channel 1 negative | Pair with AI1+ |
| 3 | AI2+ | Analog signal input channel 2 positive | Analog signal input pin, forms input with AI1- |
| 4 | AI2- | Analog signal input channel 2 negative | Pair with AI2- |
| 5 | RESET | Reset button | Reset device address by long-pressing 5s |
| 6 | 485_A | RS_485 A | RS_485 A connects with device A connector |
| 7 | 485_B | RS_485 B | RS_485 B connects with device B connector |
| 8 | GND | Wire pressing power input negative | Power GND |
| 9 | VCC | Wire pressing power input positive | Power input end, DC 8V~28V, 12V/24V recommended |
| 10 | PWR/ACK | Power/reset successful indicator | Dual-color indicator, blue represents power, green represents reset successful. |
| 11 | A1 | RF data TX/RX indicator | Dual-color indicator, blue represents data TX, green represents data RX (channel 1) |
| 12 | A2 | RF data TX/RX indicator | Dual-color indicator, blue represents data TX, green represents data RX (channel 2) |
| 13 | ANT | Antenna connector | 433MHz antenna |
| 14 | DIP switch | Mode selection | M1M0（00, 01, 10, 11） |
| 15 | AO2- | Analog signal output channel 2 negative | Pair with AO- |
| 16 | AO2+ | Analog signal output channel 2 positive | Analog signal output pin, forms output with AO2- |
| 17 | AO1- | Analog signal output channel 1 negative | Pair with AO+ |
| 18 | AO1+ | Analog signal output channel 1 positive | Analog signal output pin, forms output with AO1- |