PCR2 Configuration Payload V4

This document describes version 4 of the configuration payload introduced with PCR2 Firmware V3.6.0

Older versions of this document:

• V3
• V2

Configuration Payload Format

This payload is used to remotely read / write device configurations over LoRaWAN.

(*) These fields values are ignored by the device when downlinking this payload

Payload Examples (Hexstring)

These examples show some example configuration payloads you might use as a starting point.

Default Settings

be 01 04 00 03 06 00 00 02 00 00 00 0a 05 a0 00 00 00 00 00 78 00 5a 50 00 32 01 f4 01 14 50 00

Configuration Payload Ports

Best Practice

Using Downlinks to remotely change PCR2 settings

PCR2 devices accept downlink messages to Port 190 in the above format.

After sending the downlink to Port 190 it might take up to the Interval Time before PCR2 receives the data. (PCR2 are Class A devices)

As soon as the device received a proper Configuration Payload it parses the values and restarts with the new settings. Join procedure will start again and you should get the same Configuration Payload you sent before.

Note: Byte 0-6 are read only ROM values and cannot be changed

How to generate the Configuration Payload

You can use a config string sent by the device after joining the network and modify it manually. You could also use the PCR Setup tool to generate this string.

Keep track of your device settings

PCR2 devices are sending a uplink with this configuration string using Port 190. This is done at least once after devices joined the network.

Saving this information on your application server allows you to always know about your device settings.

Check Port and Payload Header in your decoder

Always check for port 190 prior to decoding a configuration payload. Additionally you could also check Bytes 0-2.

    // check for valid pcr2 config payload V4 
    if ( port == 190 && bytes[0] == 0xbe && bytes[1] == 0x01 && bytes[2] == 0x04 ) 
    {
        // decode it



    }

Find more example code in our public repository.

Online Payload Decoder