Hacked serial protocol for FNIRSI DC-580. See Python example, and below for frames decoding.
Also give a look at iordi's project. who is working on a Java GUI: https://github.com/iordic/jdcx/wiki/Serial-communication
- DC buck / boost CC CV
- in: 8~32V
- out: 1.8~32V 5A 80A (resolution: 0.1V / 1mA)
- protection: OVP, OCP, OPP, OTP, OHP, reverse, backflow
- serial:
- chip: QuinHeng CH341
- settings: 115200 8N1 XON/XOFF
Remarks
- M1 / M2 buttons in the windows app match nothing in the documentation, or in the logs
- sniffed from the Windows software - all commands have '\r\n' suffix (0x 0D 0A)
- commands might not be executed - a delay of 0.5s between commands seems better
| button / cell | hex | ASCII | comment |
|---|---|---|---|
| connect | 51 | Q | enable logs (MB log once, the short one) disable POWER button on screen |
| disconnect | 57 | W | stop logs enable POWER button on screen |
| voltage set | Vxxxx | U * 100 (ex. 5.0V => V0500) | |
| current set | Ixxxx | I * 1000 (ex. 3.1A => I3100) | |
| OVP | Bxxxx | U * 100 (ex. 5.0V => B0500) | |
| OCP | Dxxxx | I * 1000 (ex. 3.1A => D3100) | |
| OPP | Exxxx | P * 10 (ex. 80W => E0800) warning: read is *100, write is *10 |
|
| OHP_H | Hxx | ex. H01 | |
| OHP_M | Mxx | ex. M02 | |
| OHP_S | Sxx | ex. S03 | |
| OK | 5A | Z | reset status flag (exits from protection) |
| enable | 4E | N | switch ON |
| disable | 46 | F | switch OFF |
| M1 | 4F | O | |
| M2 | 50 | P | |
| X | enable time protection | ||
| Y | disable time protection |
- ASCII content, separated by « A » character
- there is no header of footer on the log, except « MB » after « connect »
- log is sent ~2x/s
ex. MB0499A0104A0051A0A028A0A0A0500A3000A3500A5100A8000A0A01A02A03A1A
ex. 0499A0104A0051A0A028A0A0A
| index | description | metric | example | value |
|---|---|---|---|---|
| 0 | voltage (*100) | V | 0499 | 4.99 V |
| 1 | current (*100) | A | 0104 | 1.04 A |
| 2 | power (*100) | W | 0051 | 0.51 W |
| 3 | 0 | |||
| 4 | temperature | °C / °F | 028 | 28 °C |
| 5 | CV / CC | bool | 0 | 0: CV, 1: CC |
| 6 | protection | int | 0 | 0: OK, 1: OVP, 2: OCP, 3: OPP, 4: OTP, 5: OHP |
| 7 | voltage target (*100) | V | 0500 | 5.00 V |
| 8 | current target (*1000) | A | 3000 | 3.00 A |
| 9 | OVP (*100) | V | 3500 | 35.00 V |
| 10 | OCP (*1000) | A | 5100 | 5.10 A |
| 11 | OPP (*100) | W | 8000 | 80.00 W warning: read is *100, write is *10 |
| 12 | OHP enable | bool | 0 | False (OFF) |
| 13 | OHP hours | hours | 01 | 1h |
| 14 | OHP minutes | minutes | 02 | 2m |
| 15 | OHP seconds | seconds | 03 | 3s |
| 16 | enable | bool | 1 | True (ON) |