1. Ifihan
The Waveshare Dual ETH Quad RS485 Base Board (B) is designed for the Raspberry Pi Compute Module 4 (CM4). It provides a robust solution for industrial applications requiring multi-channel RS485 communication and enhanced networking capabilities. This base board integrates dual Gigabit Ethernet ports, four isolated RS485 interfaces, USB2.0 ports, HDMI, CSI, and a fan header, making it suitable for various embedded projects.
2. Package Awọn akoonu
Verify that all items are present in your package. The standard package includes the Waveshare Dual ETH Quad RS485 Base Board (B).
Image: The Waveshare Dual ETH Quad RS485 Base Board (B) as typically included in the package.
3. Awọn ẹya ara ẹrọ
- Standard CM4 Socket: Compatible with all variants of the Raspberry Pi Compute Module 4.
- Diverse Interfaces: Includes Dual Gigabit Ethernet, 4-channel Isolated RS485, CSI camera ports, FAN header, HDMI, Micro SD slot, and USB2.0 ports.
- Industrial Application Focus: Designed for Raspberry Pi applications requiring multi-channel RS485 communication or other industrial contexts.
4. Eto Itọsọna
4.1 Connecting the Compute Module 4
Carefully align your Raspberry Pi Compute Module 4 with the standard CM4 socket on the base board. Ensure proper orientation before gently pressing the CM4 into place until it is securely seated.
Image: Illustration of how to connect the Raspberry Pi Compute Module 4 to the base board's CM4 socket.
4.2 Asopọ agbara
Connect a 7-36V DC power supply to the power input terminal. Ensure the polarity is correct. The board also supports power via the USB-C programming port when the BOOT switch is in the 'ON' position.
4.3 Network and Peripherals
Connect Ethernet cables to the Gigabit Ethernet or 100M Ethernet RJ45 connectors. Attach USB devices to the USB 2.0 Type A ports. For video output, connect an HDMI display to the HDMI port. Camera modules can be connected to the MIPI CSI-2 ports.
5. Awọn ilana Iṣiṣẹ
5.1 Booting the System
After connecting the CM4 and power supply, the system will boot. If booting from eMMC or Micro SD card, ensure the BOOT switch is in the 'OFF' position. For USB programming, set the BOOT switch to 'ON'.
5.2 RS485 ibaraẹnisọrọ
The board features four isolated RS485 channels. Connect your RS485 devices to the screw terminals. Refer to the 'What's On Board' section for detailed pin assignments and operating mode selection (full-auto or semi-auto).
5.3 Awọn imọlẹ Atọka
Observe the power indicator, CM4 status indicator (ACT), user LEDs, and RS485 communication indicators to monitor the board's status and data transmission.
6. Awọn pato
The following table outlines the key specifications of the Waveshare Dual ETH Quad RS485 Base Board (B):
Image: Visual representation of the board's specifications.
| Ẹya ara ẹrọ | Apejuwe |
|---|---|
| CM4 Socket | Suitable for all variants of Compute Module 4 |
| Nẹtiwọki | Gigabit Ethernet RJ45 connector, 100M Ethernet RJ45 connector |
| Awọn asopọ | Isolated RS485 × 4, Power screw terminal × 1 |
| USB | USB 2.0 Iru A × 2 |
| Kamẹra | MIPI CSI-2 port × 2 (15pin 1.0mm FPC connector) |
| Fidio | HDMI port × 1, supports 4K 30fps output |
| RTC | Real-time clock with battery socket and ability to wake Compute Module 4 |
| Ibi ipamọ | MicroSD card socket for Compute Module 4 Lite (without eMMC) variants |
| Fan akọsori | Allows speed adjustment, 5V |
| Awọn itọkasi | Power indicator × 1, CM4 status indicator × 1, User LED × 2, RS485 communication indicator × 8 |
| Agbara Input | 7-36V DC |
| Awọn iwọn | 93.6× 108.8mm |
7. Board Layout and Pinout
Understanding the layout of the base board is crucial for proper connection and operation. The following diagrams detail the various components and their functions.
Image: Numbered diagram showing the location of various components and interfaces on the base board.
Image: Corresponding text descriptions for each numbered component shown in the previous diagram.
8. Ohun elo Eksamples
The Waveshare Dual ETH Quad RS485 Base Board (B) is suitable for various industrial and embedded applications. An example setup might involve connecting a display and camera modules for monitoring or control systems.
Aworan: Example setup showing the base board connected to a display and camera modules, demonstrating a typical application. Note: CM4, display, and cameras are not included with the base board.
9. Awọn iwọn
The physical dimensions of the Waveshare Dual ETH Quad RS485 Base Board (B) are provided below for integration planning.
Image: Detailed outline dimensions of the base board, measured in millimeters.
10. Itọju
To ensure the longevity and optimal performance of your Waveshare Dual ETH Quad RS485 Base Board (B), follow these general maintenance guidelines:
- Ninu: Use a soft, dry cloth to gently clean the board. Avoid using liquids or abrasive cleaners.
- Mimu: Always handle the board by its edges to prevent damage to components and to avoid electrostatic discharge.
- Ayika: Operate the board in a clean, dry environment within its specified temperature and humidity ranges.
- Agbara: Ge asopọ agbara kuro ṣaaju ṣiṣe eyikeyi asopọ ti ara tabi awọn asopọ si ọkọ naa.
11. Laasigbotitusita
If you encounter issues with your Waveshare Dual ETH Quad RS485 Base Board (B), consider the following troubleshooting steps:
- Ko si Agbara: Ensure the power supply is correctly connected (7-36V DC) and functional. Check the power indicator LED on the board.
- CM4 Not Detected: Verify that the Compute Module 4 is securely seated in its socket. Check the BOOT switch position if booting from eMMC/Micro SD or for USB programming.
- Awọn oran Nẹtiwọọki: Confirm Ethernet cables are properly connected. Check network indicator LEDs on the RJ45 ports. Ensure your CM4 operating system has the correct network drivers.
- RS485 Communication Failure: Double-check wiring for polarity and correct terminal connections. Verify the RS485 operating mode jumper settings (full-auto/semi-auto) and software configuration.
- Display/Camera Not Working: Ensure cables are correctly connected to the HDMI/CSI ports. Verify that the CM4 operating system is configured to support the connected display or camera.
For further assistance, refer to the official Waveshare documentation or contact their technical support.
12. Atilẹyin ọja ati Support
For information regarding product warranty, returns, or technical support, please refer to the Waveshare official website or contact the seller directly. Warranty terms typically cover manufacturing defects for a specified period from the date of purchase.
You can visit the official Waveshare store for additional resources and support: Waveshare Store