modbus relay
The modbus relay developed by Zongheng Intelligent Control is a product that integrates transmission and remote control. Supports Modbus protocol, Modbus RTU/TCP protocol, etc. Some devices also support MQTT and JSON protocols.
It can be used with PLC to achieve remote control, and is often used in industrial automation production, elevators, smart buildings, etc. in various scenarios. The product itself has many functions and has local logic operation functions, which can meet some small application scenarios, such as automatic switching of pump stations, and in automatic supervision of water plants, it can be used with water level sensors to realize automatic switching, etc. The specific functions of each product can be viewed in detail in the product center of this site.
modbus relay selection
| product picture | Network/Model | interface | Function |
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4G full network communication ZHC492CG |
4DI/4DO/4AI/1RS485 | Support multiple satellite positioning systems: GPS, Beidou, QZSS
Conditional control Automatic collection Timing control |
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4G full network communication ZHC493C |
2DI/1DO/1AI/1RS485 |
Modbus RTU/TCP adaptive Dry and wet node IO detection local logic processing operations Configuration software docking 4-way Socket |
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4G full network communication ZHC492C |
4DI/4DO/4AI/1RS485 | A network IO product with 4 channels of relay (COM, NO, NC) output, 4 channels of analog quantity (current 4~20mA) detection, and 1 channel of serial port transparent transmission, compatible with Modbus RTU/TCP protocol. |
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4G full network communication ZHC4931 |
1RS485/232/2DI/1DO/1AI | Supports local logic processing operations, automatic collection and active reporting, Modbus RTU/TCP adaptation, automatic calibration threshold reporting, configuration software docking, and wet and dry node IO detection |
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4G full network communication ZHC4921 |
4DI/4DO/4AI/1RS485 | Supports local logic processing operations, automatic collection and active reporting, Modbus RTU/TCP adaptation, automatic calibration threshold reporting, configuration software docking, wet and dry node IO detection and other special functions |
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4G full network communication ZHC4922 |
4DI/4DO/4AI/1RS48 | MQTT RTU/TCP adaptive, automatic calibration threshold reporting, configuration software docking, dry and wet node IO detection and other special functions |
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4G full network communication ZHC4941 |
8DO/8DI/8AI/485/232 | Supports local logic processing operations, automatic collection and active reporting, Modbus RTU/TCP adaptation, automatic calibration threshold reporting, configuration software docking, wet and dry node IO detection and other special functions |
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Ethernet ZHC1921 |
RS485/4DI/2PIN/4DO/4AI | Supports 4-way Socket, Modbus RTU/TCP adaptive, local logic processing calculations, automatic collection and active reporting, DO remote follow AI/DI, configuration cloud real-time monitoring PLC, automatic IP address acquisition, DNS domain name resolution and other special functions |
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Ethernet ZHC1931 |
RS485/RS232/2DI/1DO/1AI | Supports 4-way Socket, Modbus RTU/TCP adaptive, local logic processing, automatic collection and active reporting, DO remote follow AI/DI, configuration cloud real-time monitoring PLC, automatic acquisition of IP address |
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LoRa network | 1RS485/4DI/2DO | Support AES communication encryption. Using the serial port for sending and receiving lowers the threshold for wireless applications and enables data transmission from the serial port to LoRa. |
basic skills:
√ Support Modbus RTU/TCP
√ 4 relay outputs
√ 4 DI (dry/wet node) inputs
√ 4 analog (current) inputs
√ TCP_Client/ MQTT_Client
√ Set time point to trigger action
√ Cloud forwarding, cloud networking
√ Local logic, inter-device logic
√ Network registration package, heartbeat package
√ Hardware watchdog
√ Data triggering and regular reporting
√ Remote configuration, remote upgrade
√ The host computer supports import and export of configuration files