How can I strip down my parameter.json to collect only the parameters I want to retrieve?

[framps]

I successfully managed to create a parameter.json and run ism7mqtt and receive MQTT messages. I use telegraf to copy them into my local influxdb. As of now I copy all parameters.

I want to strip down my parameter.json so it just collects the parameters I want to see in grafana. I know ism7mqtt creates MQTT messages only if parameters changed. But nevertheless all parameters have to be queried. I want to reduce the query time and don't want to store all the data in my influxdb. I know I can select the parameters to copy into influxdb in telegraf but nevertheless all data will be queried by ism7mqtt.

How can I find out which parameter I have to keep in my parameter.json if I want to get for example Kesseltemperatur only?

If I understand the algorithm I may create a script which accepts a parameter name and delivers

 "ReadBusAddress": "0x8",
      "WriteBusAddress": "0x3",
      "DeviceTemplateId": 180000,
      "Parameter": [
          4711
      ]

and contribute it in a PR 😉

[zivillian]

you can use the ParameterTemplates.xml to look up your current parameters. Just search for the element with PTID="<your id>".

The problem is, that the names are not unique - Kesseltemperatur is found 16 times and depending on your setup it will be one of those 16 ids.

If you want to know which parameters are supported for each device, you can look this up in DeviceTemplates.xml. For each device you can see a list of supported parameter ids.

[zivillian]

For your use case, it may be helpful to also have the parameter names in the json. Since this file is generated it should be easy to also add the parameter name. The remaining question is, how to migrate or still support the existing parameter.json files

[framps]

Thank you very much for your hints.

I agree it would be helpful for my use case to have the parameter names included in the generated json. But it's actually not required because I just created a small bash script which accepts a search string and searches for all parameter names defined in ParameterTemplates.xml which match the search string and then it's checked whether the ptid is available in parameter.json .

If you find it useful I can contribute the script in a PR. Just let me know in which directory I should add the script and which name I should give the script.

Sample invocation and result:

framp@majestix:~/wolf$ findExistingISM7MQTTparameters.sh kessel parameter_full.json 
>>> "Kesseltemperatur": CGB-2 - 180005
>>> "Kesselübertemperatur Sammler": CGB-2 - 180068
>>> "Nachlaufzeit Kesselkreispumpen": CGB-2 - 180117
>>> "Kesselmaximaltemperatur HZ TV-max": CGB-2 - 180118
>>> "Kesselminimaltemperatur TK-min": CGB-2 - 180129
>>> "Kesselmaximaltemperatur TK-max": CGB-2 - 180130
>>> "Kesselübertemperatur bei Speicherladung": CGB-2 - 180131
>>> "Kesselsolltemperatur": CGB-2 - 180154

framp@majestix:~/wolf$ ./findExistingISM7MQTTparameters.sh wasser parameter_full.json 
>>> "Warmwassertemperatur": CGB-2 - 180006
>>> "Durchfluss Warmwasser": CGB-2 - 180010
>>> "Auslauftemperatur Warmwasser": CGB-2 - 180050
>>> "Obere Brennerleistung Warmwasser": CGB-2 - 180115
>>> "BUSCONFIG_Warmwasserkonfiguration": CGB-2 - 180140
>>> "Warmwassersolltemperatur": CGB-2 - 180155
>>> "Warmwasserminimaltemperatur": BM-2 - 220028
>>> "1x Warmwasser": BM-2 - 220042
>>> "Warmwasser Status": WWSystem_BM-2 - 350001
>>> "Warmwassersolltemperatur eingestellt": WWSystem_BM-2 - 350009
>>> "Warmwassersolltemperatur eingestellt": WWSystem_BM-2 - 350014
>>> "Warmwasserkreis Benamung": WWSystem_BM-2 - 350016

[framps]

If you find it useful I can contribute the script in a PR

It's now 2 weeks ago I asked whether I should provide my script in a PR but didn't get any answer until now. It's fine with me if a bash script doesn't fit into your repo. I then will place the script in my bashScriptCollection repo and whoever is interested in this script can grab it from there.

[framps]

If somebody is interested in my script: It's located in my bashScriptCollection