[Collection] :Analog / Digital
[Interface] :RS485/Ethernet
[I/O channel] :12-channel
[Interface] :Ethernet
[Size] :172*107*29mm
[Weight] :457.5±5g
[Introduction] :This chapter is a quick introduction to E851-RTU (4440-ETH) series products. It is recommended that users read this chapter systematically and operate it according to the instructions. It will have a systematic understanding of the module products.
| Hardware parameters | Value |
| Product size(H*W*D) | 172*107*29mm |
| Product weight | 457.5±5g |
| Working temperature | -20℃~+70℃ |
| Storage temperature | -40℃~+85℃ |
| Working humidity | 5%~95% |
| Working voltage | 8V~28V |
| Current acquisition range | 0mA~20mA |
| Precision | 0.2% |
| Data interface | RS485：1200~115200bps |
| Software parameters | Value |
| Network Type | Ethernet |
| Configuration command | Modbus TCP/RTU |
| Network protocol | Modbus TCP/RTU |
| Working mode | Host mode、Slave mode |
| Data transmission mode | TCP Client |
| SN | Ports | Function | Illustration |
1 | DC-IN transposon | DC socket 5.5*2.1mm | Power input，DC 8V~28V, 12V/24V is recommended,cannot be powered with the crimp terminal at the same time |
2 | DC-IN + | Crimped power input positive | power input,DC 8V~28V，12V/24V is recommended,cannot be powered with the DC socket at the same time |
3 | DC-IN - | Crimped power input negative | Power reference ground |
4 | RS485 B | RS485 interface B | RS485 interface B is connected with device B interface |
5 | RS485 A | RS485 interface A | RS485 interface Ais connected with device Ainterface |
6 | RS485 G | Signal reference | can be unconnected |
7 | DIG | Switching input | Can be used in pairs with DI 4 |
8 | DI 4 | Switch input channel 4 | Form dry contact with DIG |
9 | DIG | Switching input | Can be used in pairs with DI 3 |
10 | DI 3 | Switch Input Channel 3 | Form dry contact with DIG |
11 | DIG | Switching input | Can be used in pairs with DI 2 |
12 | DI 2 | Switch Input Channel 2 | Form dry contact with DIG |
13 | DIG | Switching input | Can be used in pairs with DI 1 |
14 | DI 1 | Switch Input Channel 1 | Form dry contact with DIG |
15 | AIG | Differential analogue input | Can be used in pairs withAI 4 |
16 | AI 4 | Differential analog input channel 4 | Differential analog input pin, forming input withAIG |
17 | AIG | Differential analogue input | Can be used in pairs withAI 3 |
18 | AI 3 | Differential analog input channel 3 | Differential analog input pin, forming input withAIG |
19 | AIG | Differential analogue input | Can be used in pairs withAI 2 |
20 | AI 2 | Differential analog input channel 2 | Differential analog input pin, forming input withAIG |
21 | AIG | Differential analogue input | Can be used in pairs withAI 1 |
22 | AI 1 | Differential analog input channel 1 | Differential analog input pin, forming input withAIG |
23 | Ethernet | Mesh port | Ethernet Connection Port |
24 | Reload | Reset button | Long press 5s to work |
25 | NC 1 | Normally closed pin of Relay 1 | Cooperate with common end of relay 1 |
26 | COM 1 | Relay 1 Common End | Cooperate with the normally open/closed pin of relay 1 |
27 | NO 1 | Normally open pin of Relay 1 | Cooperate with common end of relay 1 |
28 | NC 2 | Normally closed pin of Relay 2 | Cooperate with common end of relay 2 |
29 | COM 2 | Relay 2 Common End | Cooperate with the normally open/closed pin of relay 2 |
30 | NO 2 | Normally open pin of Relay 2 | Cooperate with common end of relay 2 |
31 | NC 3 | Normally closed pin of Relay 3 | Cooperate with common end of relay 3 |
32 | COM 3 | Relay 3 Common End | Cooperate with the normally open/closed pin of relay 3 |
33 | NO 3 | Normally open pin of Relay 3 | Cooperate with common end of relay 3 |
34 | NC 4 | Normally closed pin of Relay 4 | Cooperate with common end of relay 4 |
35 | COM 4 | Relay 4 Common End | Cooperate with the normally open/closed pin of relay 4 |
36 | NO 4 | Normally open pin of Relay 4 | Cooperate with common end of relay 4 |
37 | Ground screw | Connected to the earth | Connected to the earth |
LED light
| AI 1 | Differential analog input channel 1 indication | Green LED, lights up when input ≥0.5mA |
| AI 2 | Differential analog input channel 2 indication | Green LED, lights up when input ≥0.5mA |
| AI 3 | Differential analog input channel 3 indication | Green LED, lights up when input ≥0.5mA |
| AI 4 | Differential analog input channel 4 indication | Green LED, lights up when input ≥0.5mA |
| DI 1 | Switch Input Channel 1 indication | Green LED,lights up when DI 1、DIG short connect |
| DI 2 | Switch Input Channel 2 indication | Green LED,lights up when DI 2、DIG short connect |
| DI 3 | Switch Input Channel 3 indication | Green LED,lights up when DI 3、DIG short connect |
| DI 4 | Switch Input Channel 4 indication | Green LED,lights up when DI 4、DIG short connect |
| DO 1 | Relay 1 output indication | Green LED,lights up when NO 1, COM 1 closed |
| DO 2 | Relay 2 output indication | Green LED,lights up when NO 2, COM 2 closed |
| DO 3 | Relay 3 output indication | Green LED,lights up when NO 3, COM 3 closed |
| DO 4 | Relay 4 output indication | Green LED,lights up when NO 4, COM 4 closed |
| NET | Network indication | Yellow LED, long bright after entering the network |
| DATA | Serial data indication | Yellow LED, lights up when there’s data transmitted in RS485 interface (expressively flashes) |
| WORK | Work/reset indication | Yellow LED, flashing regularly / flashing after successful reset |
| PWR | Power indicator | Red LED, long bright |
| Order online |
| 【eBay】：https://www.ebay.com/usr/cdebyte |
| 【Aliexpress】：https://www.aliexpress.com/store/2798183 |
| 【Alibaba】：https://www.alibaba.com |
| For batch order/customized product |
| 【Sales hotline】：+86-28-61399028 Ext.812 |
| 【E-mail】：service@cdebyte.com |
| Technical support |
| 【Submit online】：http://www.ebyte.com/en/apple-technology.aspx |
| 【E-mail】：support@cdebyte.com |
| 产品 型号 | Interface | Acquisition Type | TCP/IP | Ebyte Cloud | - | - | - | Size | Feature | 技术 手册 | 样品 购买 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| E851-RTU(4440-ETH) | RS485 /Ethernet | Analog / Digital | Support | Support | - | - | - | 172*107*29 | Modbus TCP/RTU |
