8 AI Modbus Rtu IOT Cellular Modem Serial Device Server SMS Gateway
- Introduction of RTU IOT Cellular Modem
- 4G IOT Cellular Modem ZHC4941 is an industrial-grade 4G RTU that provides 8 DI, 8 DO, 8 AI and 1 RS485/232 interface, supports local logic processing operations, automatic acquisition and active reporting, Modbus RTU/TCP adaptation, and automatic threshold calibration Special functions such as reporting, configuration software docking, dry and wet node IO detection, support one-to-one, many-to-one network.
Parameters of RTU IOT Cellular Modem
| | |
| Number of ports | RS485*1 | Number of interfaces | 8 Relay output |
| Standard | RS485: A, B | Standard | DO*8, COM*2 |
| Baud rate | 600～921600bps | Mechanical durability | 10^7 |
| Data bit | 8, 9 | Electrical durability | 10^5 |
| Stop bit | 0.5, 1, 1.5, 2 | Capacity | 5A 250VAC 30VDC |
| Check Bit | NONE EVEN ODD | |
| | Number of interfaces | 8 Relay input |
| Voltage | 9~36V | Standard | DI*8, COM*2 |
| Current | 60mA(aver) @9V
30mA(aver) @36V | Detection range (wet node) | 5~50V->High0~2V->Low |
| | |
| ESD | IEC61000-4-2, Level 4 | Number of Interfaces | 8 Analog input |
| Surge | IEC61000-4-2, Level 3 | Standard | AI*8, COM*2 |
| Group pulse | IEC61000-4-2, Level 3 | Scope of test | 4~20mA |
Working Mode of RTU IOT Cellular Modem
1.HTTP Client
Support serial data transmission to designated server via HTTP.
2. TCP Client
The serial server actively initiates a TCP connection to the server. If it fails, it will continue to reconnect until it succeeds. If the connection is successful, the server and the serial device can perform two-way transparent data transmission.
- Data collection
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- 4G IOT Cellular Modem
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- It mainly completes the real-time collection and reporting of energy data. All kinds of important status data required for enterprise energy management must be completed by reliable data collection terminals. Data collection is mainly composed of the central receiving server and the lower-level collection terminal. The data acquisition terminal is connected to the metering instrument through RS232/485 to obtain real-time data, and then the real-time data is sent to the central data receiving server through the 4G network.
| | ZHC4941 |
| RS485 Modbus | √ |
| RS485 Automatic Acquisition | √ |
| Virtual Serial Port | √ |
| Connfiguration Software | √ |
| Threshold Report | √ |
| Configuration Software Docking | √ |
| Modbus RTU/TCP | √ |
