Modbusproxi configuration issues

Hi There,

I am using Solaredge modbus and after some hickups, I now manage to connect to my Solaredge inverter locally via Modbus.

In order to enable multiple connection to my Inverter, I want to set up ha-modbusproxy.

Working configuration for Solaredge Modbus (w/o proxy):

Inverter IP: 192.168.1.100
TCP-Port: 1502
Modbus address: 2 #(!) - here I had issues: 1 is not working.'

Unsuccessful configuration for Modbusproxy:

Upstream host: 192.168.1.100
Upstream port: 1502
Listen port: 502 #(as no change is recommended by the developers)
Network Port: 502/tcp

Unsuccessful configuration for Solaredge Modbus (for proxy utilization):

Inverter IP: 192.168.1.50 #(HASS localhost)
TCP-Port: 502
Modbus address: 2 #assumingly the ID will not change after the proxy?!

Modbus proxy log:

s6-rc: info: service s6rc-oneshot-runner: starting
s6-rc: info: service s6rc-oneshot-runner successfully started
s6-rc: info: service fix-attrs: starting
s6-rc: info: service fix-attrs successfully started
s6-rc: info: service legacy-cont-init: starting
s6-rc: info: service legacy-cont-init successfully started
s6-rc: info: service legacy-services: starting
s6-rc: info: service legacy-services successfully started
Preparing to run modbus-proxy
Upstream: 192.168.1.100:1502
Listen: 502
Timeout: 10
Connection Time: 0.1
Loglevel: INFO
Generated Config
devices:
  - modbus:
      url: 192.168.1.100:1502 # device url (mandatory)
      timeout: 10 # communication timeout (s) (optional, default: 10)
      connection_time: 0.1 # delay after connection (s) (optional, default: 0)
    listen:
      bind: 0:502 # listening address (mandatory)
logging:
  version: 1
  formatters:
    standard:
      format: "%(asctime)s %(levelname)8s %(name)s: %(message)s"
  handlers:
    console:
      class: logging.StreamHandler
      formatter: standard
  root:
    handlers: ['console']
    level: INFO
2024-03-16 22:29:58,724     INFO modbus-proxy: Starting...
2024-03-16 22:29:58,740     INFO modbus-proxy.ModBus(192.168.1.100:1502): Ready to accept requests on 0:502

Could anybody help me out here, please? Many thanks in advance!

Is this the right location for this kind of questions, or do you have any advice, where to raise this? Many thanks!