RS485 Modbus Relay PRO RS485 Interface Relay Modbus RTU Protocol

RS485 Modbus Relay PRO RS485 Interface Relay Modbus RTU Protocol Description

RS485 Modbus Relay PRO RS485 Interface Relay Modbus RTU Protocol Description 1. This design is a relay for industrial application scenarios. It uses the Modbus RTU protocol for control and the RS-485 signal as the transmission medium. It supports multiple devices controlled by the same host. It is well-suited for industrial automation. With its ABS housing and rail clip, it is easier to install in practice. 2. The board is equipped with a mature and stable 8-bit MCU and an SP3485 level converter chip. 3. Wiring instructions: The relay can be assigned an address from 1 to 255 on the RS-485 bus. The corresponding commands can be sent to the relay's address so that the relay receiving the command can open and close each controlled circuit. 4. Note: When the relay is energized, the COM and NO terminals are connected to and disconnected from the NC terminal, respectively. This means that load 1 is working and load 2 is not. When the relay is not energized or not connected to the power supply, the COM and NC terminals are connected to and disconnected from the NO terminal, respectively. This means that load 2 works and load 1 does not.
Supply voltage: 5-32 V (the voltage should ideally be greater than 6 V to ensure greater stability)
Communication protocol: Supports the standard Modbus RTU protocol
Communication interface: Supports RS485 interface, with DIP switch for 120 Ω Termination resistor
Baud rate: 4800/9600/19200/38400, standard 9600 baud, retains data during power failure
Output signal: Relay switching signal
Due to different batches, there may be variations in product appearance and printed text, which do not affect use.
Color: As shown
Material: ABS
Package contents:
1 RS485 Modbus Relay PRO
Only the above package contents; other products are not included.
Note: Light reflections and different displays may cause the color of the item in the picture to differ slightly from the original. Measurements may vary by 1-3 cm.
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