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+--- Thread: how-to config ymal for work rs485 (/showthread.php?tid=5415)
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how-to config ymal for work rs485 - itzek - 03-26-2024
Hello I have the following components: KC868-Server,KC868-COLB, KC868-H32B Pro in my installation
i need to use modbus 485 with other controllers I need help or guide how-to config ymal for work rs485 and some examples how to control controllers using rs485
RE: how-to config ymal for work rs485 - admin - 03-27-2024
here have some video about integrate modbus device sample:
https://youtu.be/xmBWzVGpggo
https://youtu.be/xEvOK3R12kc
RE: how-to config ymal for work rs485 - itzek - 03-28-2024
Hello admin
If I need to configure the esp component that is on the KC868-server, what is the simple way to do this to connect a usb cable between the raspberry module and the type c connection of the esp?
RE: how-to config ymal for work rs485 - admin - 03-28-2024
just connect USB-C cable to KC868-Server's USB-A port.
RE: how-to config ymal for work rs485 - itzek - 03-31-2024
Hi admin
In KC868-Server what is the TX and RX pin of esp32
what is the number that i need to put in this:
uart:
id: mbus
tx_pin: GPIO13
rx_pin: GPIO16
baud_rate: 9600
and i neet to put only number or like the example I put with the GPIO or just a number
RE: how-to config ymal for work rs485 - admin - 03-31-2024
do you want to use RS485? RS485 connect with CM4 module directly, not by ESP32.
modbus:
- name: hub1
type: serial
baudrate: 9600
bytesize: 8
method: rtu
parity: N
port: /dev/ttyS0
stopbits: 1
RE: how-to config ymal for work rs485 - itzek - 03-31-2024
Hi admin
can I get a more detailed explanation of where I connect in cm4
and how I config it in the home assistants
RE: how-to config ymal for work rs485 - admin - 03-31-2024
if you want add RS485 device, you need know the device's protocol firstly, if use by modbus, then use esphome modbus component for that.
i already post two video tour link. more details you can check with ESPHome modbus component: https://esphome.io/components/modbus_controller.html
RE: how-to config ymal for work rs485 - itzek - 04-01-2024
Hi admin
It is modbus ,
According to a test I did, I need Modbus, so according to what you say, I need to use esp32. Do I need to connect the TX and RX on the server to the GPIO connections (according to the red arrow in the picture), if so, which of the 4 GPIOs do I connect to and what do I need to put in the yaml file
tx_pin: GPIO13
rx_pin: GPIO16
or I need to connect to A, B (according to the yellow arrow in the picture)
RE: how-to config ymal for work rs485 - admin - 04-01-2024
GPIO1,GPIO2,GPIO3,GPIO4 just GPIO with ESP32, it's not RS485 interface. if your device is RS485, you should connect with "ORANGE" terminal RS485 port.