Table of Content

PCR2 Configuration Payload V4

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

Older versions of this document:

Configuration Payload Format

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

Byte Property Description Uplink Values Downlink Values
0 Vendor ID Always 0xbe for Parametric Devices be ignored (*)
1 DeviceFamily Always 0x01 for PCR2 Devices 01 ignored (*)
2 PayloadVersion Always 0x03 for V3 Payloads 04 ignored (*)
3 DeviceType 00: PCR2-IN
01: PCR2-OD
02: PCR2-R
03: PCR2-T
04: PCR2-XIO
00-04 ignored (*)
4:6 FirmwareVersion 0x030600 = V3.6.0 030600-0306ff ignored (*)
7 OperatingMode 00: Timespan
01: Not Zero
02: Trigger
03: CapacityAlert
00-03 00-03
8 PayloadType 00: ELSYS
01: Cayenne LPP
02: Extended
00-02 00-02
9 DeviceClass 00: Class A
02: Class C
00 or 02 00 or 02
10 UplinkType 00: Uncofirmed
01: Confirmed
00 or 01 00 or 01
11:12 UplinkInterval 1-1440 Minutes 0001-05a0 0001-05a0
13:14 LinkCheckInterval 1-1440 Minutes, 0 = No LinkChecks 0000-05a0 0000-05a0
15:16 CapacityLimit 0-65535 Objects 0000-ffff 0000-ffff
17:18 HoldoffTime 0-600s 0000-0258 0000-0258
19:20 InactivityTimeout 1-1440 Minutes, 0 = Off 0000-05a0 0000-05a0
21 MontingDirection 90°: Parallel to Movement, 0°: Frontal 00-5a 00-5a
22 MontingTilt 90° = Overhead (Facing downwards), 0° Sideways 00-5a 00-5a
23 Beam 30-80° Detection Area (Radar Beam) 1e-50 1e-50
24:25 MinDist Min Distance to Target 10-3000 cm 000a-0bb8 000a-0bb8
26:27 MaxDist Max Distance to Target 10-3000 cm 000a-0bb8 000a-0bb8
28 MinSpeed Min Detection Speed 1-MaxSpeed km/h 01-50 1e-50
29 MaxSpeed Max Detection Speed MinSpeed-80km/h 01-50 1e-50
30 RadarSensitivity 10-100% 0a-64 0a-64

(*) 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



Configuration Payload Ports

Uplink Port 190
Downlink Port 190



Best Practice

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.