Dongyi DY-2 via USB only reading ET & BT 32F/0C

[ajbutterworth]

I have a Dongyi DY2 roaster.

I'm connecting it via USB cable to a laptop running Windows 11. I installed the CP210x serial drivers successfully.

I've attached screenshots of my settings.

The software recognizes the USB input on COM4 but only returns BT and ET readings of 32F / 0C and they don't change, nor match the output readings on the roasting machine's Omron E5CC's.

Any help or insight much appreciated!

[poundy]

Assuming this is a new machine and this is the first time you've attempted to connect any roasting software to it? (the troubleshooting would be different if this "used to work but has now stopped")

You should check that you have the listed PID/controller as per the machine page: https://artisan-scope.org/machines/dongyi/

It's possible the manufacturer has changed what controller they use, or the registers they are using. Since the DY family is a supported machine I would expect the configuration to "just work". I personally would be trying different register values on the PORT settings page (use input3, set to FLOAT32 and slave 1) to identify if another register is holding the displayed values.

[ajbutterworth]

It's not a new machine - I bought it used. The previous owner never tried to link it with the Artisan software.

It does have the Omron controller as listed in the link you provided.

I've been trying different register values on the PORT settings page as you suggested but no luck so far.

Thanks for your suggestions!

[Terracotta-6]

Omron E5CC
https://assets.omron.eu/downloads/latest/manual/en/h175_e5_c_communications_manual_en.pdf?v=7

[ajbutterworth]

Thanks, I have been looking through that manual - mainly I've checked that the paramters match the Artisan numbers.

[Terracotta-6]

Find equipment manufacturer or regional sales for machine problems.
https://dy-coffee.en.made-in-china.com/contact-info.html?pv_id=1ijeomb9s513&faw_id=1ijep0vmk8df

[ajbutterworth]

Thanks, I've reached out to them, they're quite responsive in fact.

[ajbutterworth]

Wow that ended up being more than a little banging of head against wall but I eventually got it to work. Putting this here in case it helps someone in the future:

I replaced the existing comms (presumably broken) with this USB to RS485 adapter which I wired to the Omron controller: Amazon.com: Waveshare USB to RS485 Converter with Protection Circuits, Compatible with TVs : Electronics

Then I had to do a ton of trial and error in the Artisan port configurator but eventually got it to show up correctly using these parameters:

Match these settings between both your Omron controller and Artisan:
COM Port: (whatever your USB com port reads in Device Manager)
BAUD Rate: 9600
Byte Size: 8
Parity: N
Stopbits: 1
Timeout: 3.0

In Artisan Port Configuration:

Input 1
Slave: 1
Register: 0
Function: 3
Divider: 1/10
Mode: (Blank)
Decode: sint16

Input 2
Slave: 1
Register: 1
Function: 3
Divider: 1/10
Mode: (Blank)
Decode: sint16

[MAKOMO]

Assuming the data is temperature you should select with the MODE either C or F for input 1 and 2, depending if the readings send by the machine are in F or C. This is for proper conversion. If MODE is not set, the readings are not converted to the display temperature unit but always rendered as received.

A serial timeout larger than 1sec is scary as it can block communication quite a bit. A more reasonable value would 0.4sec.

You might want to have the "Optimize" flag ticked in the MODBUS tab to have those two readings fetched in a single request. This could improve stability of communication (if supported by the device).

Congrats!

[Terracotta-6]

He chose the register address 0000 four bits. It is more reasonable to choose two bits of register address.
When the protocol is Modbus, the communication data bit is fixed to 8 bits. When the parity check is set to even 1 odd, the communication termination bit is fixed to 1 bit with no parity
It is fixed to 2 bits when checking