ZHC4922 is an industrial 4G RTU, providing 4 DI, 4 DO, 4 AI, and 1 RS485 interface. It supports local logic processing operations, automatic acquisition and active reporting, MQTT RTU/TCP adaptation, automatic calibration threshold reporting, Configuration software docking, dry and wet node IO detection and other features.
Basic Informations :
Chip : Quectel-EC20/25
Protocol : MQTT/HTTP/Modbus TCP
Serial Ports : RS485
Function Ports : 4xDO+4xDI+4xAI
Communication Method: LTE (4G)/GPRS/GSM
Size : 159.5*95.9*27.5 mm
Features :
1. Configuration Software Docking
2. RS485 Automatic Acquisition
3. Automatic Identification Modbus RTU/TCP protocol
4. TCP Client communication
5. HTTP Client communication
6. Hardware protection, anti-static, anti-surge, wide voltage, Opto-couplers isolation
Self-built server
If Customers have their own servers
ZHC4922 can communicate directly with the client server after simply configured.
The ZHC4922 follows the Modbus RTU/TCP protocol and also supports 485-channel transparent
transmission protocols.
When some customers use the configuration software, they can’t directly connect the PC and S485. The ZHC4922 supports the ZH-Cloud transmission. The customer only need to install the virtual serial port, the data of the ZHC4922 can be forwarded to the local serial port of the PC, which is more convenient and quick. (Also applicable to scenarios without a cloud server)
ZHC4922 has an RS485 interface, which supports the standard modbus RTU/TCP protocol. The configuration software can directly read and command the ZHC4922 through the RS485 interface.
The ZHC4922 supports networking functions and supports one-to-one and multiple-to-one networks. This need is very practical for some specialization scenarios.
Analog Auto-calibration Threshold Report
The ZHC4922 presets the analog linear calibration parameter value, the user only needs to modify the k/b value to achieve the linear calibration effect. In addition, the effect of analyzing the analog data can be realized by adjusting the k/b value, and the threshold will be reported.
Modbus RTU/TCP Automatic Identification
Adaptive Modbus RTU/TCP protocol, the data format replied by the ZHC4922 is consistent with the data format sent by the cloud.
TCP Client Communication
The serial server initiates a TCP connection to the server actively. If the connection fails, the connection is repeated repeatedly until it succeeds. If the connection is completed, the server and serial device can carry out two-way transparent data transmission.
Product Applications :
4G DTU/RTU Modem is required in many places. Such as factory reservoirs, reservoirs for irrigation of farmland, water towers for water supply, water levels for rivers, etc. It is important to monitor the water level remotely.
Smart Agriculture
1-Monitoring the situation in the greenhouse,such as utilization rate about water resources, fertilizers and so on.
2-To obtain farmland information and monitor sudden natural disasters.
3-Fully automated operation without human intervention, achieving the precise control of agriculture.
Industrial Detection
1-According to the site environment to choose WiFi or wired networking.
2-Real-time detection of air leakage products.
3-High sensitivity transmission monitoring data, the accurate data can ensure that monitoring without omission.
