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+--- Forum: KC868-A16 (https://www.kincony.com/forum/forumdisplay.php?fid=25)
+--- Thread: RS485 on ESPhome (/showthread.php?tid=7610)
RS485 on ESPhome - HA_user - 02-12-2025
Hello,
I have been trying to start modbus communication between KinCony A16 and Eastron SDM630 via rs485 using espHome for some time, according to the documentation the registers are identical to KinCony Energy Meter RS485 Modbus RTU Monitor
Log shows me: [17:53:08][D][modbus_controller:040]: Modbus command to device=1 register=0x64 no response received - removed from send queue
I would like to ask if I have something wrong in the .yaml file?
esphome:
name: md01-kc868-a16-gar
friendly_name: md01-kc868-a16-GAR
esp32:
board: esp32dev
framework:
type: arduino
# Enable logging
logger:
# Enable Home Assistant API
api:
encryption:
key: "************************************"
###################################
ota:
- platform: esphome
password: "*********************************"
wifi:
ssid: !secret wifi_ssid
password: !secret wifi_password
# Optional manual IP
manual_ip:
static_ip: 192.168.88.21
gateway: 192.168.88.1
subnet: 255.255.255.0
####################################
uart:
id: mod_bus
tx_pin: 13
rx_pin: 16
baud_rate: 9600
stop_bits: 1
parity: EVEN
modbus:
id: modbus1
uart_id: mod_bus
modbus_controller:
- id: a24
address: 0x01
modbus_id: modbus1
setup_priority: -10
update_interval: 5s
####################################
sensor:
- platform: modbus_controller
modbus_controller_id: a24
name: "Voltage"
id: modbus_voltage
register_type: holding
address: 0x64
unit_of_measurement: "V"
value_type: FP32
accuracy_decimals: 2
RE: RS485 on ESPhome - admin - 02-12-2025
i don't used your energy meter board. But there is a video tour about how to integrate RS485 energy meter to home assistant: https://youtu.be/xEvOK3R12kc
make sure find your meter's data register and data type, then modify in yaml file.
RE: RS485 on ESPhome - HA_user - 02-16-2025
(02-12-2025, 10:55 PM)admin Wrote: i don't used your energy meter board. But there is a video tour about how to integrate RS485 energy meter to home assistant: https://youtu.be/xEvOK3R12kc
make sure find your meter's data register and data type, then modify in yaml file.
Hello,
Thank you very much, it helped me a lot.
In the end, the problem was in the set communication speed. The RS485 interface on the A16 works perfectly