Specifications
Table Of Contents
- Version V1.2 | January, 2020
- www.RAKwireless.com
- 1 Overview
- 2 RAK7431 Networking Applications
- 3 Interfaces
- 4 RAK7431 Specifications
- 5 Installation
- FCC Caution:
- Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
- This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may ca...
- IMPORTANT NOTE:
- Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential insta...
- —Reorient or relocate the receiving antenna.
- —Increase the separation between the equipment and receiver.
- —Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
- —Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
- —Consult the dealer or an experienced radio/TV technician for help.
- FCC Radiation Exposure Statement:
- This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment .This equipment should be installed and operated with minimum distance 20cm between the radiator& your body.
- 6 Revision History
- 7 Document Summary
RAK7431
8
3 Interfaces
Figure 4 | RAK7431 bottom panel
Power supply and configuration interface:
RAK7431 can be powered by its DC terminal or via its Micro USB port.
The DC terminal accepts 8-48V DC input, and the rated power of the device is 1W. Pay
attention to the positive and negative pole directions when crimping the terminal. Vin is
connected to the positive pole of the power supply, and GND is connected to the negative
pole of the power supply.
The Micro USB port can also be used for powering the device (5V / 500mA DC).
At the same time, the Micro USB port can be used as the configuration interface of the device.
Connect it to a PC and use the RAK Serial Port Tool to open a COM port. The default baud
rate is 115200. There is a standard set of AT commands that can be used to configure the
RAK7431.
Data interface:
When connecting to RS485 nodes, please connect 485A and 485B on the data interface of
RAK7431 with the A and B lines of the RS485 bus. Connect the GND terminal to the GN line
of the RS485 devices The RS485 bus carrying capacity of RAK7431 goes up to 16 RS485
terminals at the same time.
The Vout on the data interface can supply power to the RS485 terminals (only valid when
using the DC input interface power supply, USB power supply is invalid). The Vout output
voltage is the same as DC input voltage Vin.