Rs485

[Savino]

Hi, could anyone show me how to solve the following?
I have mini server with home assistant and kc868 - A6 with kincony firmware. I'd like to connect the boards via Rs485 and manage relay and DI of kc868 - A6 from home assistant using Rs485.

[admin]

you can see this video: how to add RS485 relay board to ESPHome by Modbus Controller Switch
https://youtu.be/xmBWzVGpggo

[Savino]

Thanks admin.
I need one more info.
1) It's mandatory to install ESP home in my home assistant to make my Server Mini able to communicate with KC868-A6 via RS485? or it's possible without installing ESP home?

Actually I modified the configuration.yaml in my home assistant as you see


# Loads default set of integrations. Do not remove.
default_config:

# Load frontend themes from the themes folder
frontend:
themes: !include_dir_merge_named themes

automation: !include automations.yaml
script: !include scripts.yaml
scene: !include scenes.yaml

uart:
id: mbus
tx_pin: GPIO14
rx_pin: GPIO15
baud_rate: 9600

modbus:
id: modbus1
uart_id: mbus
send_wait_time: 200ms

modbus_controller:
- id: a6
address: 1
modbus_id: modbus1
update_interval: 1s

switch:
- platform: rpi_gpio
switches:
- port: 5
name: "OUT1"
- port: 22
name: "OUT2"
- port: 17
name: "OUT3"
- port: 4
name: "OUT4"
- port: 6
name: "OUT5"
- port: 13
name: "OUT6"
- port: 19
name: "OUT7"
- port: 26
name: "OUT8"

- platform: modbus_controller
name: 'modbus-switch1'
address: 0 # 0:relay1 1:relay2 ......
register_type: coil
bitmask: 1

binary_sensor:
- platform: rpi_gpio
sensors:
- port: 18
name: "IN1"
- port: 23
name: "IN2"
- port: 24
name: "IN3"
- port: 25
name: "IN4"
- port: 12
name: "IN5"
- port: 16
name: "IN6"
- port: 20
name: "IN7"
- port: 21
name: "IN8"

and then restarted home Assistant...unfortunatly there is no modbus-switch1 in the Entity list!

[admin]

MUST need use RS485 for connection? if use by wifi will be very easy.
let server-mini and A6 connect to same router is ok. install ESPHome, config yaml file for A6.

[Savino]

Ok. Installed ESP home.

Where could I find a basic yaml file for the A6 board?
Thanks in advance.

[admin]

here is yaml for A6: https://www.kincony.com/forum/showthread.php?tid=1963

[Savino]

MUST need use RS485 for connection? if use by wifi will be very easy.
let server-mini and A6 connect to same router is ok. install ESPHome, config yaml file for A6.

Hello admin.
I used wifi and it's all ok.
I'm able to set relay and read digital input from my A6 board connected to homeassistant.

Now I need to setup communication beetwen Mini Server and A6 board via RS485.
I followed the video you suggested. Something is not working and I hope to solve the problem step by step.

So first of all: in the Mini Server yaml file there is something wrong.
I receive the following notifications from Home Assistant:

Invalid config
The following integrations and platforms could not be set up:

• uart (Show logs)
  
• modbus_controller (Show logs)
  
• modbus (Show logs)
  

If I go to the logs, briefly the messages are:
integration 'uart' not found
and invalid config for modbus...for exemple id is an invalid option for modbus and so on

could you help me?

[admin]

if you are first time to use server-mini, you need to enable serial port for CM4, here is details :
https://www.kincony.com/forum/showthread.php?tid=1971

[Savino]

if you are first time to use server-mini,  you need to enable serial port for CM4, here is details :
https://www.kincony.com/forum/showthread.php?tid=1971

and please...what about the slave side?
My slave board is kc868-A6, could you post the basic line to add to the A6 yaml file in order to enable and setup Modbus-RTU protocol?

[admin]

download KCS firmware to A6 board, enable RS485 using MODBUS-RTU. just login KCS webpage to set.