Sunsynk data not reading

[marvil1961]

I have HA installed on a Ubuntu server inside virtualbox as per the installation instructions ha installation on Linux (https://www.home-assistant.io/installation/linux/#install-home-assistant-operating-system)

Have battled to get the usb to RS485 converter to be seen by HA but found that the usb device must first be enabled in Virtualbox and were then quite exited that HA will work with my 8kW Sunsynk Inverter but it was not meant to be - communication is still not happening. Cable connection I think is correct Oninverter Pin 1&2 to B&A on Usb converter

on the Modbus TCP to Modbus RTU Gateway Add-on my Log info is as follows: DEVICE: /dev/serial/by-id/usb-1a86USB2.0-Ser-if00-port0

[19:21:07] INFO: Starting mbusd -d -L - -v 3 -p /dev/ttyUSB0 -s 9600 -m 8N1 -P 502 11 Apr 2022 19:21:07 mbusd-0.5.1 started... 11 Apr 2022 19:21:07 tty: trying to open /dev/ttyUSB0 (speed 9600 mode 8N1) 11 Apr 2022 19:21:59 tty: error in read() (port closed) 11 Apr 2022 19:21:59 trying to re-open tty... 11 Apr 2022 19:21:59 tty re-opening... 11 Apr 2022 19:21:59 tty: trying to open /dev/ttyUSB0 (speed 9600 mode 8N1) 11 Apr 2022 19:21:59 tty re-opened.

The above looks like this part is working

on the Sunsynk Inverter Add-on the log file looks like this and I get Timeout Readings

[s6-init] making user provided files available at /var/run/s6/etc...exited 0. [s6-init] ensuring user provided files have correct perms...exited 0. [fix-attrs.d] applying ownership & permissions fixes... [fix-attrs.d] done. [cont-init.d] executing container initialization scripts... [cont-init.d] done. [services.d] starting services [services.d] done. 2022-04-11 19:26:04,237 INFO Loading HASS OS configuration 2022-04-11 19:26:04,294 INFO Filter *last used for battery_soc, total_battery_charge, total_battery_discharge, total_grid_export, total_grid_import, total_pv_power 2022-04-11 19:26:04,305 INFO Protocol made connection. 2022-04-11 19:26:04,306 INFO Connected to /dev/ttyUSB0 2022-04-11 19:26:04,364 INFO ############################################################ 2022-04-11 19:26:04,365 INFO Inverter serial number '2111255555' 2022-04-11 19:26:04,365 INFO ############################################################ 2022-04-11 19:26:04,366 INFO MQTT: Connecting to mqtt_user@core-mosquitto:1883 2022-04-11 19:26:04,383 INFO MQTT: Connection successful 2022-04-11 19:26:15,412 ERROR Timeout reading: 2022-04-11 19:26:15,413 INFO Retrying individual sensors: ['Total PV Power:last', 'Total Battery Charge:last', 'Total Battery Discharge:last', 'Total Grid Export:last', 'Total Grid Import:last', 'Battery SOC:last'] 2022-04-11 19:26:25,450 ERROR Timeout reading: Total PV Power 2022-04-11 19:26:35,489 ERROR Timeout reading: Total Battery Charge 2022-04-11 19:26:45,520 ERROR Timeout reading: Total Battery Discharge 2022-04-11 19:26:55,558 ERROR Timeout reading: Total Grid Export 2022-04-11 19:27:05,598 ERROR Timeout reading: Total Grid Import 2022-04-11 19:27:15,700 ERROR Timeout reading:

[kellerza]

There can only be ONE connection to the serial port!

So either

1. shut down mbusd (everything else) and connect only the Sunsynk addon to /dev/ttyUSB0
2. connect ONLY mbusd to /dev/ttyUSB0 and connect the Sunsynk addon to tcp://<your_v_box_ip>:502

[marvil1961]

Thank you I did remove mbusb but still no connection, on Sunsynk Addon I get the following logging details

2022-04-13 06:36:32,724 INFO Loading HASS OS configuration 2022-04-13 06:36:32,752 INFO Filter *last used for battery_soc, total_battery_charge, total_battery_discharge, total_grid_export, total_grid_import, total_pv_power 2022-04-13 06:36:32,801 INFO Protocol made connection. 2022-04-13 06:36:32,802 INFO Connected to /dev/ttyUSB0 2022-04-13 06:36:42,806 ERROR Timeout reading: 2022-04-13 06:36:42,809 INFO ############################################################ 2022-04-13 06:36:42,809 INFO No response on the Modbus interface, try checking the wiring to the Inverter, the USB-to-RS485 converter, etc 2022-04-13 06:36:42,809 INFO ############################################################ 2022-04-13 06:36:42,809 CRITICAL This Add-On will terminate in 30 seconds, use the Supervisor Watchdog to restart automatically.

I think my problem is that I can not read any thing from the serial port line 5 & 6 above

2022-04-13 06:36:32,802 INFO Connected to /dev/ttyUSB0 2022-04-13 06:36:42,806 ERROR Timeout reading:

[kellerza]

In your initial logs you did have a connection

2022-04-11 19:26:04,305 INFO Protocol made connection.
2022-04-11 19:26:04,306 INFO Connected to /dev/ttyUSB0
2022-04-11 19:26:04,364 INFO ############################################################
2022-04-11 19:26:04,365 INFO Inverter serial number '2111255555'
2022-04-11 19:26:04,365 INFO ############################################################

Are you sure you don't have anything else trying to use the serial port? Also worth double checking your wiring. Read the README in the repository. What is your cable length?

[mikee47]

If your RS485 adapter has a termination resistor, try removing it.

The d.c. voltage between A/B on the sunsynk RS485 connection should idle around 4-5v with nothing connected. I found that this drops to about 0.5v when connected to my RS485 controller. Removing the 120 ohm termination resistor fixed the problem.

[kellerza]

Hi @mikee47, it would be great if you can do a small writeup of this idea and add it to the readme - here