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industrial modbus ethernet converter gsm rtu controller ZHC4921 internet modem IOT Router 128
Self-built serverIf Customers have their own serversZHC4921 can communicate directly with the client server after simply configured. The ZHC4921 follows the Modbus RTU/TCP protocol and also supports 485-channel transparent transmission protocols.
If customer don‘’t have a cloud serverWhen some customers use the configuration software, they can't directly connect the PC and S485. The ZHC4921 supports the ZH-Cloud transmission. The customer only need to install the virtual serial port, the data of the ZHC4921 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)
Configuration software dockingZHC4921 has an RS485 interface, which supports the standard modbus RTU/TCP protocol.The configuration software can directly read and command the ZHC4921 through the RS485 interface.
industrial modbus ethernet converter gsm rtu controller ZHC4921 internet modem IOT Router 128The ZHC4921 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 reportingThe ZHC4921 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.Support automatic identification of Modbus RTU/TCP protocolAdaptive Modbus RTU/TCP protocol, the data format replied by theZHC4921 is consistent with the data format sent by the cloud.
TCP CLient communicationThe serial server initiates a TCPconnection to the server actively. If the connection fails, the connection is repeated repeatedly until it succeeds. If theconnection is completed, the server and serial device can carry out two-way transparent data transmission.




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Product Applications
industrial modbus ethernet converter gsm rtu controller ZHC4921 internet modem IOT Router 1284G 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 Agriculture1. 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 Detection1. 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.




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