I have a Waveshare 8-channel Modbus POE ETH Relay and I’m really struggling with getting it integrated into Home Assistant.
I know the IP address is correct and the port is what I see in the web UI. I have been able to connect in python directly using pymodbus TCP client, but I can’t get the relays to toggle on\off using HA or in the Python REPL with pymodbus.
This is my test config using relay 8.
modbus:
- name: waveshare_relay
type: tcp
host: 192.168.0.107 # Replace with your device's IP address
port: 4196 # Replace with your device's port
binary_sensors:
- name: relay_1_status
slave: 1
address: 0
input_type: coil
scan_interval: 5
switches:
- name: relay_1
slave: 1
address: 0
write_type: coil
Has anyone used this device before and configured it successfully? I’m really at a loss after several hours of different attempts. ty!
Some logs for this…
2024-05-19 13:40:18.364 INFO (MainThread) [homeassistant.setup]
Setting up modbus
2024-05-19 13:40:18.376 INFO (MainThread) [homeassistant.setup]
Setting up switch
2024-05-19 13:40:18.378 INFO (MainThread) [homeassistant.setup]
Setup of domain switch took 0.00 seconds
2024-05-19 13:40:18.381 INFO (MainThread) [homeassistant.setup]
Setup of domain modbus took 0.02 seconds
2024-05-19 13:40:18.388 INFO (MainThread) [homeassistant.components.modbus.modbus]
modbus waveshare_relay communication open
2024-05-19 13:40:29.088 INFO (MainThread) [homeassistant.components.binary_sensor]
Setting up modbus.binary_sensor
2024-05-19 13:40:29.092 INFO (MainThread) [homeassistant.components.switch]
Setting up modbus.switch
2024-05-19 13:40:42.084 ERROR (MainThread) [homeassistant.components.modbus.modbus]
Pymodbus: waveshare_relay:
Error: device: 1 address: 0 -> Modbus Error: [Input/Output]
ERROR: No response received after 3 retries
My device config from VirCOM looks like this.
And the device Web UI shows the same.
Removing the sensor section fixed it… this works.
modbus:
- name: waveshare_relay
type: tcp
host: 192.168.0.107 # Replace with your device's IP address
port: 502 # Replace with your device's port
switches:
- name: Relay 1
address: 0
slave: 1
write_type: coil
- name: Relay 2
address: 1
slave: 1
write_type: coil
- name: Relay 3
address: 2
slave: 1
write_type: coil
- name: Relay 4
address: 3
slave: 1
write_type: coil
- name: Relay 5
address: 4
slave: 1
write_type: coil
- name: Relay 6
address: 5
slave: 1
write_type: coil
- name: Relay 7
address: 6
slave: 1
write_type: coil
- name: Relay 8
address: 7
slave: 1
write_type: coil
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Hi mate,
Side question, did you just plug that relay module in and IP was detected automatically?
I just received one and plugging it into my network it doesnt get an ip assigned.
Is there some sort of magic preconfiguration required?
TIA
Mick
The device does not get an DHCP IP address by default - it is assigned the IP 192.168.1.200. I followed the guide below to download the VirCom software, which saw the relay on the network and then I enabled DHCP for IP addressing. Worked great!
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