Help with troubleshooting - can't get data in genmon

[robybrisson]

I have connected to my generator (with "Sync" Nexus controller from a honeywell model) the ESP32-WROOM-32U running ESPHome and a yaml file closely matching the one you provided, and the exact wiring you suggested (rx/tx).

I'm a total newb with docker containers, but have setup Genmon with this dockerfile: https://github.com/JMVS/genmon-docker/tree/main, but I had to comment out the 2 pip related commands as they would fail.

I ran it using docker run -d -p8080:8000 -p6638:6638 genmon (I'm on windows, so I ran that in the docker desktop terminal)

I can access the genmon dashboard, I can get logs from my esp32 in HA. Here's a sample which shows my desktop ip (running docker) connected to the stream server:

[20:18:06][D][stream_server:081]: New client connected from 192.168.1.209
[20:18:11][D][uart_debug:114]: >>> 00 17 00 00 00 06 9D 03 00 19 00 01
[20:18:16][D][uart_debug:114]: >>> 00 18 00 00 00 06 9D 03 00 1A 00 01
[20:18:21][D][uart_debug:114]: >>> 00 19 00 00 00 06 9D 03 00 1B 00 01
[20:18:26][D][uart_debug:114]: >>> 00 1A 00 00 00 06 9D 03 00 1C 00 01
[20:18:31][D][uart_debug:114]: >>> 00 1B 00 00 00 06 9D 03 00 1D 00 01
[20:18:35][D][sensor:094]: '$name WiFi Signal Sensor': Sending state -50.00000 dBm with 0 decimals of accuracy
[20:18:36][D][uart_debug:114]: >>> 00 1C 00 00 00 06 9D 03 00 1E 00 01
[20:18:41][D][uart_debug:114]: >>> 00 1D 00 00 00 06 9D 03 00 1F 00 01
[20:18:46][D][uart_debug:114]: >>> 00 1E 00 00 00 06 9D 03 00 20 00 01
[20:18:51][D][uart_debug:114]: >>> 00 1F 00 00 00 06 9D 03 00 21 00 01
[20:18:52][I][safe_mode:041]: Boot seems successful; resetting boot loop counter
[20:18:52][D][esp32.preferences:114]: Saving 1 preferences to flash...
[20:18:52][D][esp32.preferences:143]: Saving 1 preferences to flash: 0 cached, 1 written, 0 failed
[20:18:56][D][uart_debug:114]: >>> 00 20 00 00 00 06 9D 03 00 22 00 01

I've enabled genmon's Enable Serial over TCP/IP and set my esp32's ip:
IP Address: 192.168.1.213 from esphome logs and on my router.

Genmon has a "System Initializing, not receiving data" icon bottom right.

Monitor looks like this:

Monitor :

Generator Monitor Stats :
    Monitor Health : System Initializing. Not receiving data.
    Controller : Nexus, Air Cooled
    Run time : Generator Monitor running for 0:10:50.
    Generator Monitor Version : V1.19.05
    Update Available : No


Communication Stats :
    Packet Count : M: 130, S: 0
    CRC Errors : 0
    CRC Percent Errors : 0.00%
    Timeout Errors : 129
    Timeout Percent Errors : 99.23%
    Modbus Exceptions : 0
    Validation Errors : 0
    Sync Errors : 0
    Invalid Data : 0
    Discarded Bytes : 0
    Comm Restarts : 1
    Packets Per Second : 0.20
    Modbus Transport : TCP


Platform Stats :
    CPU Utilization : 0.46%
    OS Name : Ubuntu
    OS Version : 24.04.1 LTS (Noble Numbat)
    System Uptime : 3:44:46
    Network Interface Used :
    System Time : Monday January 13, 2025 01:27:07

Any help appreciated!!!

[squatchdev]

Most likely you need to change your rx_pin to GPIO3 in the esphome config. His picture shows it connected to RX but he uses GPIO22 in the config.