Integrate precise control into your industrial systems with the Modbus RTU 8-channel Latching Relay Module (C). With an RS485 interface and multiple isolation protection circuits, it's incredibly reliable for various applications.
**Product Features:**
- **Persistent Settings**: The latching relay technology keeps your settings even after a power loss, ensuring consistent operation.
- **Easy Expansion**: Thanks to the configurable device address (1 - 255), you can cascade multiple devices on the RS485 bus effortlessly.
- **Smart Timing**: The flash-on and flash-off function allows for precise timing control of relays.
- **Stable Power**: The onboard isolated power supply provides a stable voltage, eliminating the need for extra power for the isolated terminal.
- **Pure Signals**: Onboard magnetic isolation ensures signal purity, with high interference resistance and low power consumption.
- **Circuit Protection**: A resettable fuse and TVS diode protect against surges, lightning, and electrostatic discharge.
- **Strong Driving**: The specialized latching relay driver chip offers powerful and stable driving.
- **Safe Design**: The reverse-proof circuit prevents accidental misconnections.
- **High-Power Handling**: High-quality relays can handle up to ≤10A 250VAC/30VDC for high-power applications.
- **Simple Installation**: Housed in a rail-mounted ABS plastic enclosure, it's easy to install.
**Indicators and Interfaces:**
- **Power Requirement**: It needs a 7 - 36V supply.
- **Communication**: Follows the Standard Modbus RTU protocol.
- **LED Monitoring**: Three LEDs (STA, TXD, RXD) let you monitor the MCU and signal activity.
**Specifications:**
- Contact Configuration: 1NO 1NC
- Default Communication Format: 9600bps, N, 8, 1
- Available Baud Rates: 4800, 9600, 19200, 38400, 57600, 115200, 128000, 256000
**Dimensions and Construction:**
- Size: 145×90×40mm, a compact fit for your setups.
- Weight: 0.233 kg, lightweight yet high-performing.
Unlock advanced automation with this high - performance, fail - safe relay module. It's perfect for those who need versatile communication and strong protection.
**Quick Overview:**
The product doesn't include a power supply. We recommend a 12V power supply for best results. Also, consider getting a USB TO RS232/485/TTL or USB TO RS485 converter for testing and configuration. Your package contains one Modbus RTU Relay (C) unit. Visit our WIKI at www.waveshare.com/wiki/Modbus_RTU_Relay_(C) for more info.
Using this Modbus RTU 8 - channel Latching Relay Module (C) is straightforward. First, make sure to choose a suitable power supply within the 7 - 36V range. We suggest a 12V power supply for the best performance. Connect the module to your system using the RS485 interface, and set the device address according to your needs (it can be from 1 to 255). This allows you to cascade multiple modules easily if you want to expand your control.
When it comes to the relay control, you can use the flash - on and flash - off function to set precise timing for the relays. They'll turn on for a set time and then turn off automatically.
As for the indicators, the three LEDs (STA, TXD, RXD) are there to help you monitor the status of the MCU and signal transceiving. If you see any abnormal LED behavior, it might indicate a problem.
Here are some important things to note. The power supply isn't included with the product, so you'll need to get one. Also, be careful when connecting the wires to avoid accidental misconnections, as the module has a reverse - proof circuit but it's still better to be cautious.
For maintenance, keep the module clean and dry. Check the connections regularly to make sure they're secure. If there's a power surge or lightning, the module has protection circuits, but it's still a good idea to unplug it during extreme weather conditions. And if you need more detailed information, you can always visit our WIKI at www.waveshare.com/wiki/Modbus_RTU_Relay_(C).
