Modbus RTU 16-Ch Relay Module, RS485 Interface, With Multiple Isolation Protection Circuits, Industrial-Grade, Rail-Mount Case
This product is an industrial 16-ch relay module controlled via RS485 bus, adopts Modbus RTU protocol, built-in protection circuits such as power supply isolation, ADI magnetical isolation, resettable fuse, and TVS diode, etc. It also comes with an ABS case.
The Modbus RTU 16-Ch Relay is very easy to use. Due to its fast communication, stability, reliability, and safety, it is an ideal choice for industrial control equipments and/or applications with high communication requirements.
- Configurable device address (1~255), multi devices can be cascaded on RS485 bus
- Features flash-on, flash-off function, by passing argument to the command, it is possible to turn on the relay for a while and then close it automatically
- Onboard unibody power supply isolation, provides stable isolated voltage, needs no extra power supply for the isolated terminal
- Onboard unibody ADI magnetical isolation, allows signal isolation, high reliability, strong anti-interference, low power consumption
- Onboard resettable fuse and TVS (Transient Voltage Suppressor), effectively suppress surge voltage and transient spike voltage in the circuit, provides over-current/over-voltage proof, lightningproof & anti-electrostatic
- Onboard Optocoupler isolation, prevent the relay from being interfered by high-voltage circuit
- Onboard dedicated relay driver chip, with built-in freewheeling diode protection, the driving ability is stronger and more stable
- Reverse-proof circuit, prevent the circuit from being damaged accidentally by incorrect connection
- High quality relay, contact rating: ?10A 250VAC/30VDC
- Rail-mounted ABS case, easy to install, safe to use
- 3 LEDs for indicating the MCU status and signal transceiving status
Specifications
- Operating voltage: 5V
- Communication interface: RS485
- baudrate: 4800, 9600, 19200, 38400, 57600, 115200, 128000, 256000
- Default communication format: 9600, N, 8, 1
- Relay channels: 16
- Contact form: 1NO 1NC
- Communication protocol: Standard Modbus RTU protocol
- RS485 address: 1~255
- LED indicators
- STA: MCU indicator, keep flashing when the MCU normally working
- TXD: TX indicator, lights up when sending data
- RXD: RX indicator, lights up when receiving data
RS485 Communication
Configurable device address (1~255), multi devices can be cascaded on RS485 bus In case of many devices are cascaded, or the communication distance is quite long, it is necessary to use RS485 repeaters
* for reference only, the USB to RS485 is NOT included.
Relay connection
Contact rating of the onboard relay up to 10A 250VAC/30VDC Directly controlling 220VAC home appliances, or devices below 30VDC
Wiki:www.waveshare.com/wiki/Modbus_RTU_Relay_16CH
Lieferumfang
It is recommended to purchase USB TO RS232/485/TTLorUSB TO RS485 at the same time for easy testing.
- Modbus RTU Relay 16CH x1
- US plug 5V 2A Power supply (with EU head adapter) x1
