modbus exploitation of 169 Mhz sensors

DEPRECATED

Themis now autodiscovers the temperature and humidity sensors operating on the 169 Mhz range and using the wireless Mbus protocol. Nevertheless, at the beginnings, we had to pair the receiver with the sensors. Once the pairing has been successfully completed, the datas from the various transmitters are available in real time, via a query of the receiver in Modbus RTU format. This guide covers the pairing process, which is now deprecated. This is just for general knowledge.

Create the ecosystem

Once you receive the receiver and its transmitters, use the Enless Field software AIR to create the ecosystem

Assuming you are using a windows 10 machine and even if your machine is 64 bits but a bit old :

• install the 32 bits version of the jre
• install the 32 bits of AIR

At this stage, you do not need to have the hardware connected to the computer on which the software is installed

Save the csv file (smart if you need to change the periodicity in the future)

example

Pairing process

Note: At this stage, you need the hardware receiver to be recognized by the host computer on which you’ve installed AIR.
Usually, the receiver is automatically recognized but on some old machines, you may need to do it manually
The drivers can be found on the ftdi website, as the lastest windows M2xx drivers or on the main D2XX page

Phase 0 : identify the DIPS on the receiver

Phase 1 : transmitters installation

On the receiver, position the switches as follow :

• DIP1 : 1,2,3,4 OFF 5,6 ON
• DIP2 : 1,2,3 OFF

Power the receiver with a 12V alimentation

Plug the receiver to the computer via USB

Load the csv file if needed

Connect to the receiver

[15-déc.-2019 20:14:47] Port série connecté COM9@19200

Start the installation

[07-janv.-2020 16:24:28] Démarrage de l’installation

Power one by one each transmitter

[07-janv.-2020 16:24:36] Demande d'installation pour TX TEMP HUM 12220756 RSSI:-28,0dBm
[07-janv.-2020 16:24:38] Acquittement en phase d'installation 12220756 RSSI:-27,0dBm
[07-janv.-2020 16:24:39] Niveau RSSI en phase d'installation 12220756 RSSI:-29,0dBm
[07-janv.-2020 16:24:41] Niveau RSSI en phase d'installation 12220756 RSSI:-27,0dBm
[07-janv.-2020 16:24:43] Niveau RSSI en phase d'installation 12220756 RSSI:-28,0dBm
[07-janv.-2020 16:24:45] Niveau RSSI en phase d'installation 12220756 RSSI:-41,0dBm
[07-janv.-2020 16:24:47] Niveau RSSI en phase d'installation 12220756 RSSI:-40,0dBm
[07-janv.-2020 16:24:49] Succès de l'installation TX TEMP HUM 12220756 RSSI:-38,0dBm

On each transmitter, L1 should blink in red during communication with receiver

Stop the installation

[07-janv.-2020 16:42:24] Arrêter l’installation

The sensors should now appear as activated

Phase 2 : receiver installation and pairing with transmitters

Unplug and poweroff the receiver

On the receiver, position the switches as follow :

• DIP1 : 1,2,3,4 OFF 5,6 ON
• DIP2 : 1,3 OFF 2 ON

Power the receiver with a 12V alimentation

Once the receiver powered, L5 should start blinking on it

As soon as L5 flashes, don’t waste time :

• plug the receiver to the computer via USB,
• connect the AIR software to the receiver
• start the installation

[07-janv.-2020 16:44:25] Port série connecté COM9@19200
[07-janv.-2020 16:44:30] Démarrage de l’installation
[07-janv.-2020 16:44:32] Demande d'installation pour Receiver 21520922
[07-janv.-2020 16:44:38] Acquittement en phase d'installation Receiver 21520922
[07-janv.-2020 16:44:44] Succès de l'installation Receiver 21520922

Stop the installation

[07-janv.-2020 16:44:59] Arrêter l’installation

The receiver should now appear as activated

Phase 3 : switching the receiver in RS485 exploitation mode

Unplug and poweroff the receiver

On the receiver, position the switches as follow :

• DIP1 : 1,2,5,6 OFF 3,4 ON
• DIP2 : 1,2 OFF 3 ON

SUMMARY

Each sequence can be performed independently

Routeur configuration

Tested with Smarflex SR303 and ICR3200 from Advantech

Physical connexions

The above illustration was made using an ISR 3200 router and a smartflex SR303 router with 2 ethernet ports. There is a variant of the SR303 with 3 ethernet ports. The RS485 connectivity is a bit different.

Emonhub configuration

declare the interfacer

[interfacers]
[[ModbusTCP]]
    Type = EmonModbusTcpInterfacer2
    [[[init_settings]]]
        modbus_IP = 192.168.1.1 # ip address of client to retrieve data from
        modbus_port = 503 # Portclient listens on
        fCode = 3 # optional if using function code 3 (read holding registers) - with fCode = 4, the interfacer will read input registers
    [[[runtimesettings]]]
        nodeIds = 23,24
        pubchannels = ToEmonCMS,
        # time in seconds between checks, This is in addition to emonhub_interfacer.run() sleep time of .01
        interval = 60

configure some nodes

[[23]]
    nodename = TRH12220020
    [[[rx]]]
       names = SlaveType,Timer,RSSI,serHigh,serLow,temp,hum
       registers = 31048,31049,31050,31051,31052,31053,31054
       datacode = H
       unitId = 2
       scales = 1,1,0.5,1,1,0.1,0.1

[[24]]
    nodename = CO218251004
    [[[rx]]]
        names = SlaveType,Timer,RSSI,serHigh,serLow,co2,temp,hum
        registers = 31092,31093,31094,31095,31096,31097,31098,31099
        datacode = H
        unitId = 2
        scales = 1,1,0.5,1,1,1,0.1,0.1