Cool, Thanks for posting that, it will be really useful.
newbornsun
New Member
Hey guys, nice work done. I didnt see a link for the arduino code for interfacing the DCC50s, does anybody have that or can that be emailed? alex@parallaxengineering.com Thanks in advance!
Bear in mind that it's 2 years since Renogy gave this to me, it may not be 100% correct.
oPless
New Member
Thanks,
I shall bear that in mind!
YAML:
modbus:
- name: renogy_charge_controller
type: serial
baudrate: 9600
bytesize: 8
method: rtu
port: /dev/ttyUSB0
stopbits: 2
parity: N
timeout: 1
sensors:
- name: errorstatehigh
unique_id: errorstatehigh
address: 290
input_type: holding
slave: 1
- name: errorstatelow
unique_id: errorstatelow
address: 289
input_type: holding
slave: 1
- name: chargeState
unique_id: chargeState_sensor
address: 288
input_type: holding
slave: 1
- name: workingDays
unique_id: working_days
address: 277
input_type: holding
slave: 1
- name: totalPower
unique_id: totalPower_acc
address: 275
input_type: holding
slave: 1
unit_of_measurement: Wh
device_class: energy
state_class: measurement
scan_interval: 5
scale: 0.001
precision: 3
- name: solWatts
unique_id: solWatts_sensor
address: 265
input_type: holding
slave: 1
unit_of_measurement: W
device_class: power
state_class: measurement
scan_interval: 5
- name: solAmps
unique_id: solAmps_sensor
address: 264
input_type: holding
slave: 1
unit_of_measurement: A
device_class: current
state_class: measurement
scale: 0.01
precision: 1
scan_interval: 5
- name: solVoltage
unique_id: solVoltage_sensor
address: 263
input_type: holding
slave: 1
unit_of_measurement: V
device_class: voltage
state_class: measurement
scan_interval: 5
scale: 0.1
precision: 1
- name: altWatts
unique_id: altWatts_sensor
address: 262
input_type: holding
slave: 1
unit_of_measurement: W
device_class: power
state_class: measurement
scan_interval: 5
- name: altAmps
unique_id: altAmps_sensor
address: 261
input_type: holding
slave: 1
unit_of_measurement: A
device_class: current
state_class: measurement
scan_interval: 5
precision: 2
scale: 0.01
- name: altVolt
unique_id: altVolt_sensor
address: 260
input_type: holding
slave: 1
unit_of_measurement: V
device_class: voltage
state_class: measurement
scan_interval: 5
precision: 1
scale: 0.1
- name: auxTemp
unique_id: auxTemp_sensor
address: 259
input_type: holding
slave: 1
unit_of_measurement: '°C'
device_class: temperature
state_class: measurement
scan_interval: 5
- name: maxAmps
unique_id: maxAmps_sensor
address: 258
input_type: holding
slave: 1
unit_of_measurement: A
device_class: current
state_class: measurement
scale: 0.01
precision: 1
scan_interval: 5
- name: auxVolt
unique_id: auxVolt_sensor
address: 257
input_type: holding
slave: 1
unit_of_measurement: V
device_class: battery
state_class: measurement
scale: 0.1
precision: 1
- name: auxSoc
unique_id: auxSoc_sensor
address: 256
input_type: holding
slave: 1
unit_of_measurement: '%'
device_class: battery
state_class: measurementThat will work in home assistant using https://www.amazon.co.uk/DSD-TECH-S...pd_rd_i=B078X5H8H7&psc=1&ref_=pd_bap_d_rp_1_t
pturner1989
New Member
Not a T6 owner but I've just installed the DCC30s and have decided it's now essential 
to connect it to Home Assistant, maybe along with OBD data and GPS . Thanks all, for the head start!
I spent half a day trying to figure out why I couldn't get a response from the DCC30s, turns out the clue was above from @busbus. So I hope this helps someone. Even if you only have one device, once you connect via the DC Home app and BT-2, it will change the slave ID. No idea how it decides but in my case it was 96.
Now I can poll for data, although my mappings don't seem to match up with the ones supplied by @ma33er for the DCC50s so a little more investigation to go.
to connect it to Home Assistant, maybe along with OBD data and GPS . Thanks all, for the head start!I spent half a day trying to figure out why I couldn't get a response from the DCC30s, turns out the clue was above from @busbus. So I hope this helps someone. Even if you only have one device, once you connect via the DC Home app and BT-2, it will change the slave ID. No idea how it decides but in my case it was 96.
Now I can poll for data, although my mappings don't seem to match up with the ones supplied by @ma33er for the DCC50s so a little more investigation to go.
oPless
New Member
Beware that the DCC30 might not respond without a magic wake up message on the RS483 bus ... my DCC50 doesn't!
My current (python) code is here; GitHub - opless/renogy-solar-dcc50-100ah-battery
I throw it through MQTT and have a bunch of sensors in the YML to get the values.
I'd spam them here, but I'm still making my battery box.
HTH!
My current (python) code is here; GitHub - opless/renogy-solar-dcc50-100ah-battery
I throw it through MQTT and have a bunch of sensors in the YML to get the values.
I'd spam them here, but I'm still making my battery box.
HTH!
there is also a very good implementation for renogy rover , also working for DCC50 and DCC30
renogy monitor solarthing
very good implementation
renogy monitor solarthing
very good implementation
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nice work! I imagined having a pip package where you specify your device and it caters for all (DCC50S, DCC30, Battery) but just havent had the time.
Interesting about the magic wake up message! I've got one of the Bluetooth batteries, and I noticed the app sends a reset command when it first connects. Since it's Bluetooth and to a different service than the RX/TX I wasn't sure what it was for, but now I assume it sends a break signal on the RS485 (since internally there just seems to be a BLE -> RS485 module that Renogy buys).
If anyone is interested, I just finally got around to converting my messy Arduino C++ to Python that runs on a Raspberry Pi. GitHub - mackmgg/VanScripts/Python/battery.py
I came across this thread whilst googling for Renogy + Modbus
Thank you to all those who have shared their work & code! as a result I've cobbled together a ESP8266 & MAX 485 and used Arduino to read the registers from my DCC50S and output the variables dynamically to a webserver. It still needs plenty of work but it's mostly functional.
I have come across a few odditites I can't get my head around though... maybe those of you who have far more coding skill and those been playing with this for longer may have some ideas?
As per the screenshot Register 0109 (Solar Charging Power) always shows an input power when the alternator is running, it's actually slightly higher than Alternator Charging Power (0106) value ---- I have no solar panels connected! Solar Voltage and Solar Current as expected remain at 0. I think this may explain? why for the last few months I have been unable to get to the bottom of a sudden charging issue whereby the DCC50S no longer charges at 50amps from the alternator and instead maxes out at near 15amps (is it thinking there are solar panels connected hence the 15amp limit?) a full reset has not helped.
There are other issues I have come across but until I get to the bottom of this one their not important.
Does anyone have any ideas?
P.S. I will happily upload the code to Github and post here when it's far more complete just incase it's of any use to anyone else in future! I'm no coder though... it'll be rough and ready but maybe a start for those going down a micro controller / Arduino route rather than Rpi / Python route.
Thank you to all those who have shared their work & code! as a result I've cobbled together a ESP8266 & MAX 485 and used Arduino to read the registers from my DCC50S and output the variables dynamically to a webserver. It still needs plenty of work but it's mostly functional.
I have come across a few odditites I can't get my head around though... maybe those of you who have far more coding skill and those been playing with this for longer may have some ideas?
As per the screenshot Register 0109 (Solar Charging Power) always shows an input power when the alternator is running, it's actually slightly higher than Alternator Charging Power (0106) value ---- I have no solar panels connected! Solar Voltage and Solar Current as expected remain at 0. I think this may explain? why for the last few months I have been unable to get to the bottom of a sudden charging issue whereby the DCC50S no longer charges at 50amps from the alternator and instead maxes out at near 15amps (is it thinking there are solar panels connected hence the 15amp limit?) a full reset has not helped.
There are other issues I have come across but until I get to the bottom of this one their not important.
Does anyone have any ideas?
P.S. I will happily upload the code to Github and post here when it's far more complete just incase it's of any use to anyone else in future! I'm no coder though... it'll be rough and ready but maybe a start for those going down a micro controller / Arduino route rather than Rpi / Python route.
Any chance you can upload the code to GitHub? I'm trying to get my DCC50S to work with an esp32.
Yes that was / is still my plan when it's a bit more complete...
tbh having used it in the above, very rough, buggy, unfinished state it did it's job and I confirmed my suspicions that I had there definitely was an issue with my DCC50S.
It's literally only the last week I have revisited the project with a view to getting it to a more finished state, with my efforts, so far being spent on the hardware... I had hoped to power the project directly from the RS485 port but the stated 250mA max current supplied by the DCC50S isn't enough as is and makes for very unstable running! I've reached the end of my electrical ability and came to the conclusion that it's just too easy to use a USB cable!
Code wise it needs much more work... the basic (more useful) registers are read correctly but others definitely are not! I am working on it but I'm no coder so progress is slow!
