1. Introduction
The Taidacent DRF2659C is a robust Zigbee RS485 converter designed for reliable wireless data transmission in industrial and commercial applications. It facilitates communication between RS485 devices and a Zigbee mesh network, acting as either a Coordinator or a Router. This manual provides essential information for the proper installation, configuration, and operation of the DRF2659C module.
2. Product Overview
The DRF2659C module integrates a CC2630 chip, offering a 2.4GHz wireless frequency for long-range transmission up to 1600 meters in open environments. It features standard RS485 communication interfaces and flexible power input options.
Figure 1: Taidacent DRF2659C Zigbee RS485 Converter with antenna.
Figure 2: Side view showing antenna connector and terminal blocks.
3. Key Features
- Model: DRF2659C
- Input Voltage: DC 5-28V
- Temperature Range: -40°C to +85°C
- Wireless Frequency: 2.4GHz (2460MHz default, configurable from 2405MHz-2480MHz in 5MHz steps)
- Serial Port Rate: 38400bps (default), configurable from 1200bps to 115200bps
- Serial Port Format: 8-N-1 (default), configurable to 8-E-1, 8-O-1
- Transmission Distance: Up to 1600 meters in visible, wide environments with external antenna
- Receive Sensitivity: -98dBm
- Configurable Node Type: Coordinator or Router
- Interfaces: RS485 (A/B/GND), SMA outer screw inner hole for antenna
4. Setup and Installation
4.1. Antenna Installation
Carefully screw the provided 2.4GHz antenna onto the SMA connector located on the module. Ensure it is securely tightened but do not overtighten.
4.2. Power Connection
Connect a DC power supply within the range of 5V to 28V to the DC5-28V terminals. Observe polarity: connect the positive (+) lead to the '+' terminal and the negative (-) lead to the '-' terminal. A power supply capable of delivering at least 350mA at 5V is recommended.
4.3. RS485 Connection
Connect your RS485 device to the RS485 terminals on the module. Connect the A line of your RS485 device to the 'A' terminal, the B line to the 'B' terminal, and the ground to the 'GND' terminal.
4.4. Node Configuration
The module can operate as a Zigbee Coordinator or a Router. Use the switch or jumper (if present, refer to specific product labeling) to select the desired node type. The Coordinator initiates and manages the Zigbee network, while Routers extend the network range and allow other devices to join.
5. Operation
5.1. Power On
Once all connections are made, apply power to the module. The LED indicators will illuminate, indicating power and initial status.
5.2. LED Indicators
- LED (Active TX/RX): This LED indicates data transmission (TX) or reception (RX) activity over the wireless link. A blinking LED signifies active data flow.
5.3. Data Transmission
The DRF2659C transparently converts RS485 data to Zigbee packets for wireless transmission and vice-versa. Data sent to the RS485 port will be transmitted wirelessly, and data received wirelessly will be output via the RS485 port.
6. Advanced Configuration
The DRF2659C allows for advanced configuration of its serial port and wireless parameters using serial commands. These commands are typically sent from a connected computer or microcontroller via the RS485 interface.
6.1. Serial Port Settings
The default serial port rate is 38400bps with an 8-N-1 format. These can be changed via serial commands to rates such as 1200bps, 2400bps, 4800bps, 9600bps, 19200bps, 57600bps, and 115200bps. The format can also be set to 8-E-1 or 8-O-1.
6.2. Wireless Channel Selection
The default wireless frequency is 2.4GHz (2460MHz). Users can change the operating channel through serial commands within the range of 2405MHz to 2480MHz, with a step size of 5MHz. This allows for optimization in environments with potential interference.
7. Technical Specifications
Figure 3: Dimensions of the DRF2659C module.
| Parameter | Value |
|---|---|
| Model | DRF2659C |
| Dimensions (L x W x H) | 70mm x 50.5mm x 24mm (without fixing hole part) |
| Input Voltage | DC 5-28V |
| Temperature Range | -40°C to +85°C |
| Wireless Frequency | 2.4GHz (2405MHz-2480MHz, 5MHz step) |
| Serial Port Rate | 1200, 2400, 4800, 9600, 19200, 38400 (default), 57600, 115200 bps |
| Serial Port Format | 8-N-1 (default), 8-E-1, 8-O-1 |
| Transmission Distance | Up to 1600 meters (visible wide environment, external antenna) |
| Working Current (average @5V) | 25mA |
| Standby Current (@5V) | 20mA |
| Receive Current (@5V) | 23mA |
| Transmit Current (@5V) | 200mA |
| Receive Sensitivity | -98dBm |
| Configurable Node | Coordinator, Router |
| Communication Interface | RS485 (A/B/GND) |
| Antenna Interface | SMA outer screw inner hole |
8. Troubleshooting
- No Power: Ensure the DC power supply is connected correctly (polarity) and within the specified voltage range (5-28V). Check power supply functionality.
- No Data Transmission:
- Verify RS485 connections (A to A, B to B, GND to GND).
- Confirm serial port settings (baud rate, data format) match between the module and the connected device.
- Ensure the antenna is properly installed.
- Check if the Zigbee network is properly formed (Coordinator active, Routers joined).
- Poor Wireless Range:
- Ensure the antenna is correctly attached and unobstructed.
- Minimize physical obstructions (walls, metal objects) between modules.
- Consider changing the wireless channel to avoid interference from other 2.4GHz devices.
9. Maintenance
The Taidacent DRF2659C module requires minimal maintenance. Keep the device clean and free from dust. Ensure it is operated within the specified temperature and humidity ranges. Avoid exposing the module to excessive moisture or corrosive environments.
10. Warranty and Support
For warranty information and technical support, please refer to the documentation provided with your purchase or contact Taidacent customer service through their official channels. Please have your product model (DRF2659C) and purchase details ready when seeking support.