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
6
RAK7431 can work in polling mode in order to send query instructions to RS485 nodes, and
convert the data returned into LoRa® frames to be relayed to the application server via a
LoRaWAN™ Gateway.
Figure 2 | RAK7431 polling mode
RAK7431 can store a maximum of 32 query instructions in polling mode, each of which has
a maximum length of 128 bytes. Polling time interval and waiting time can be adjusted as
required.
RAK7431 converts the data returned by RS485 nodes into LoRa® packets that can be sent
to LoRaWAN™ Gateway in two ways: transparent or packet.
•
In transparent mode, RS485 data is encapsulated in the payload of LoRa® frames
as it is.
•
In packet mode, RS485 data is encapsulated in LoRa® frames with the addition of a
header and verification.
No matter whether polling mode is enabled or not, the server can actively send commands to
query the RS485 nodes through the LoRaWAN™ Gateway via the RAK7431. The
commands issued and the returned data can also be transmitted in transparent mode or in
packet mode.