[v4.0.0] New device detected after update, fails with "Unable to connect:1502" due to wrong port/IP - Unable to connect to 192.168.1.XXX:1502 after 2 attempts

Describe the bug

After upgrading to v4.0.0, the integration detected a new device and prompted to add it. When attempting to complete the setup/add the new device, the discovery scan fails with the following error:

Expected behavior

The IP address in the error log (192.168.1.XXX) belongs to the secondary inverter in a Leader/Follower (Master/Slave) setup.

The secondary inverter does not expose/listen on Modbus TCP port 1502 directly; communication for all units is routed through the primary inverter via RS485/Modbus bridge. It appears that the new device-modelling framework in v4.0.0 incorrectly attempts an independent TCP connection to the follower unit's IP instead of querying it through the primary Modbus gateway/connection.

To Reproduce

Running a multi-inverter SolarEdge setup (Leader + Follower via RS485).

Upgrade solaredge-modbus-multi to v4.0.0.

Home Assistant prompts that a new device/component was discovered.

Attempt to add the discovered device.

Setup fails with Scan failed: Unable to connect to <Secondary_Inverter_IP>:1502.

Expected behavior
The discovery/setup mechanism should recognize that secondary/follower inverters are polled through the primary inverter's Modbus connection/Unit ID and should not attempt to establish a separate direct TCP connection to port 1502 on the secondary unit's IP address.

System Information

Integration Version: v4.0.0

Home Assistant Version: 2025.9.0 (or newer)

Setup: Dual SolarEdge Inverters (Leader/Follower via RS485)

Screenshots

No response

Diagnostic File

config_entry-solaredge_modbus_multi-01JVJ3J9M57QX8ZAK3G15Z0SXW.json

Debug logs

Home Assistant Version

2026.9.2

solaredge-modbus-multi Version

4.0.0

Installation Type

HAOS

Read the Instructions

• My configuration follows https://github.com/WillCodeForCats/solaredge-modbus-multi/wiki/Configuration
• I have read the Known Issues https://github.com/WillCodeForCats/solaredge-modbus-multi/wiki/Known-Issues
• This issue is not about a template error (do not report template errors, read https://github.com/WillCodeForCats/solaredge-modbus-multi/wiki/Template-Design-Notes)

Additional Context

No response