Description
This Modbus RTU 16-Channel Relay Module features an RS485 interface and incorporates multiple isolation protection circuits. It operates at a voltage of 5V and supports communication via the RS485 interface. The module offers selectable baud rates, including 4800, 9600, 19200, 38400, 57600, 115200, 128000, and 256000. The default communication format is set to 9600-N-8-1. With 16 relay channels, each channel has a contact form of 1NO 1NC. The communication protocol adheres to the standard Modbus RTU protocol. The module can be assigned an RS485 address ranging from 1 to 255. LED indicators include STA, which is the MCU indicator flashing during normal MCU operation; TXD, the TX indicator that lights up during data transmission; and RXD, the RX indicator that lights up when data is received.
- Operating Voltage: 5V
- Communication Interface: RS485
- Baud Rates: 4800, 9600, 19200, 38400, 57600, 115200, 128000, 256000
- Default Communication Format: 9600-N-8-1
- Relay Channels: 16
- Contact Form: 1NO 1NC
- Communication Protocol: Modbus RTU
- RS485 Address: 1 to 255
- LED Indicators:
- STA: MCU indicator, flashes during normal MCU operation
- TXD: TX indicator, lights up during data transmission
- RXD: RX indicator, lights up during data reception
- Modbus RTU Relay 16CH x1
- US plug 5V 2A Power supply (with EU head adapter) x1
FAQs:
Q: What is the communication protocol used by this relay module?
A: The module uses the Modbus RTU protocol for communication, which is a widely used standard for industrial control systems.
Q: How many relays does this module have and what is their capacity?
A: The module has 16 channels (relays), and each relay can handle a maximum of 10A at 250VAC or 10A at 30VDC.
Q: Does this module offer any protection for the relays and communication interface?
A: Yes, the module has built-in isolation protection circuits for both the relays and the RS485 communication interface. This helps prevent damage from electrical surges and ensures reliable operation in industrial environments.
Q: What is the maximum baud rate supported by the RS485 interface?
A: The module supports a wide range of baud rates, from 1200bps up to 256000bps, offering flexibility for different communication needs.
Q: What applications is this relay module suitable for?
A: The module is suitable for various industrial control and automation applications, such as controlling lighting systems, motors, pumps, valves, and other electrical equipment. The Modbus RTU protocol and isolation protection make it suitable for use in demanding industrial environments.
