Can't read data from Voltronic AXPERT MKS IV 5.6KW

[sebashb]

I have tried to connect to a Voltronic AXPERT MKS IV 5.6KW but I get the following error message INVERTER: Unable to open device file (errno=2 No such file or directory)

user@device:~/skymax-demo$ lsusb
Bus 006 Device 002: ID 05e3:0620 Genesys Logic, Inc. 
Bus 006 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 005 Device 041: ID 0665:5161 Cypress Semiconductor USB to Serial
Bus 005 Device 002: ID 05e3:0610 Genesys Logic, Inc. 4-port hub
Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 002: ID 13d3:3548 IMC Networks 
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 007 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

user@device:~/skymax-demo$ ls /dev/hid*
/dev/hidraw0

user@device:~/skymax-demo$sudo ./inverter_poller -d
Tue Jul 23 23:05:25 2024 INVERTER: Debug set
Tue Jul 23 23:05:25 2024 INVERTER: Unable to open device file (errno=2 No such file or directory)
Tue Jul 23 23:05:30 2024 INVERTER: Current CRC: B7 A9
Tue Jul 23 23:05:33 2024 INVERTER: QPIGS read timeout
Tue Jul 23 23:05:33 2024 INVERTER: QPIGS command timeout, or couldn't find stop byte. Byte read (64 bytes). Buffer: (000.0 00.0 229.8 50.0 0490 0490 008 380 54.60 000 092 0057 00.0ocess...

# The device to read from...
# Use: /dev/ttyS0 if you have a serial device,
#      /dev/ttyUSB0 if a USB<>Serial,
#      /dev/hidraw0 if you're connecting via the USB port on the inverter.

device=/dev/hidraw0

# How many times per hour is the program going to run...
# This is used to calculate the PV & Load Watt Hours between runs...
# If unsure, leave as default - it will run every minute...

# (120 = every 30 seconds)...
run_interval=30

# This allows you to modify the amperage in case the inverter is giving an incorrect
# reading compared to measurement tools.  Normally this will remain '1'
amperage_factor=1.0

# This allos you to modify the wattage in case the inverter is giving an incorrect
# reading compared to measurement tools.  Normally this will remain '1'
watt_factor=1.01

# Depending on the protocol version used and your device,
# you might need to change the following parameters

#### For Axpert VM3 inverter like, use thos 
Tue Jul 23 23:05:33 2024 INVERTER: Unable to open device file (errno=2 No such file or directory)
Tue Jul 23 23:05:38 2024 INVERTER: Unable to open device file (errno=2 No such file or directory)
Tue Jul 23 23:05:48 2024 INVERTER: Current CRC: 49 C1
Tue Jul 23 23:05:49 2024 INVERTER: stop byte detected, buffersize might be 46 for QMOD 
Tue Jul 23 23:05:49 2024 INVERTER: QMOD reply size (46 bytes)
Tue Jul 23 23:05:49 2024 INVERTER: QMOD: incorrect start bytes.  Buffer:  000.0 00.00 00009 00010000 00 00  0000 010?6
Tue Jul 23 23:05:49 2024 INVERTER: Current CRC: B7 A9
Tue Jul 23 23:05:49 2024 INVERTER: stop byte detected, buffersize might be 110 for QPIGS 
Tue Jul 23 23:05:49 2024 INVERTER: QPIGS reply size (110 bytes)
Tue Jul 23 23:05:49 2024 INVERTER: QPIGS: 110 bytes read: (000.0 00.0 229.8 50.0 0490 0490 008 380 54.70 000 093 0057 00.0 000.0 00.00 00009 00010000 00 00 00000 010 
Tue Jul 23 23:05:49 2024 INVERTER: QPIGS query finished
Tue Jul 23 23:05:49 2024 INVERTER: Current CRC: F8 54
Tue Jul 23 23:05:52 2024 INVERTER: QPIRI read timeout
Tue Jul 23 23:05:52 2024 INVERTER: QPIRI command timeout, or couldn't find stop byte. Byte read (48 bytes). Buffer: (230.0 24.3 230.0 50.0 24.3 5600 5600 48.0 46.0 00 093 0057 00.0 000.0 00.00 00009 00010000 00 00 00000 010 
Tue Jul 23 23:05:52 2024 INVERTER: Unable to open device file (errno=2 No such file or directory)
Tue Jul 23 23:06:02 2024 INVERTER: Unable to open device file (errno=2 No such file or directory)
Tue Jul 23 23:06:07 2024 INVERTER: Unable to open device file (errno=2 No such file or directory)
Tue Jul 23 23:06:12 2024 INVERTER: Current CRC: B4 DA
Tue Jul 23 23:06:15 2024 INVERTER: QPIWS read timeout
Tue Jul 23 23:06:15 2024 INVERTER: QPIWS command timeout, or couldn't find stop byte. Byte read (0 bytes). 4.3 230.0 50.0 24.3 5600 5600 48.0 46.0 00 093 0057 00.0 000.0 00.00 00009 00010000 00 00 00000 010 
Tue Jul 23 23:06:20 2024 INVERTER: Unable to open device file (errno=2 No such file or directory)
Tue Jul 23 23:06:25 2024 INVERTER: Current CRC: F8 54
Tue Jul 23 23:06:28 2024 INVERTER: QPIRI read timeout
Tue Jul 23 23:06:28 2024 INVERTER: QPIRI command timeout, or couldn't find stop byte. Byte read (0 bytes). 4.3 230.0 50.0 24.3 5600 5600 48.0 46.0 00 093 0057 00.0 000.0 00.00 00009 00010000 00 00 00000 010 
Tue Jul 23 23:06:28 2024 INVERTER: Unable to open device file (errno=2 No such file or directory)
Tue Jul 23 23:06:38 2024 INVERTER: Unable to open device file (errno=2 No such file or directory)
Tue Jul 23 23:06:43 2024 INVERTER: Current CRC: F8 54
Tue Jul 23 23:06:43 2024 INVERTER: stop byte detected, buffersize might be 23 for QPIRI 
Tue Jul 23 23:06:43 2024 INVERTER: QPIRI reply size (23 bytes)
 ue Jul 23 23:06:43 2024 INVERTER: QPIRI: incorrect start bytes.  Buffer:  00 0 1 48.0 0 1 000
Tue Jul 23 23:06:43 2024 INVERTER: Current CRC: B4 DA
Tue Jul 23 23:06:46 2024 INVERTER: QPIWS read timeout
Tue Jul 23 23:06:46 2024 INVERTER: QPIWS command timeout, or couldn't find stop byte. Byte read (40 bytes). Buffer: 4.3 230.0 50.0 24.3 5600 5600 48.0 46.0 .0 46.0 00 093 0057 00.0 000.0 00.00 00009 00010000 00 00 00000 010 
Tue Jul 23 23:06:51 2024 INVERTER: Current CRC: 49 C1
Tue Jul 23 23:06:54 2024 INVERTER: QMOD read timeout
Tue Jul 23 23:06:54 2024 INVERTER: QMOD command timeout, or couldn't find stop byte. Byte read (0 bytes). B.0 50.0 24.3 5600 5600 48.0 46.0 .0 46.0 00 093 0057 00.0 000.0 00.00 00009 00010000 00 00 00000 010 
Tue Jul 23 23:06:54 2024 INVERTER: Unable to open device file (errno=2 No such file or directory)
Tue Jul 23 23:06:59 2024 INVERTER: Unable to open device file (errno=2 No such file or directory)
Tue Jul 23 23:07:09 2024 INVERTER: Unable to open device file (errno=2 No such file or directory)
Tue Jul 23 23:07:14 2024 INVERTER: Unable to open device file (errno=2 No such file or directory)
Tue Jul 23 23:07:19 2024 INVERTER: Current CRC: B4 DA
Tue Jul 23 23:07:22 2024 INVERTER: QPIWS read timeout
0 50.0 24.3 5600 5600 48.0 46.0 .0 46.0 00 093 0057 00.0 000.0 00.00 00009 00010000 00 00 00000 010 ytes). Buffer: QPIWS??
Tue Jul 23 23:07:27 2024 INVERTER: Unable to open device file (errno=2 No such file or directory)

I'm aware that I may need to change a few values on the inverter.conf file but I don't know how do I find the correct values.

I have already tried a few different values that I found on the web but I'm still having errors. Currently I'm using the following values:

qpiri=103
qpiws=40
qmod=5
qpigs=110

[manio]

Hi, it doesn't hold together:
you have the needed device:

user@device:~/skymax-demo$ ls /dev/hid*
/dev/hidraw0

in config you have a proper value:

device=/dev/hidraw0

But when starting you've got:

Unable to open device file (errno=2 No such file or directory)

Are you sure that the config is OK and from the same instance?

[sebashb]

Hi, yes I'm sure that I'm running inverter_poller from the same directory on which the configuration is at.

Is there any simpler test that I can do to verify the proper function of the device?

Could it be a driver issue? Or in that case the device wouldn't show up?

[manio]

All seems fine, you have the needed device (/dev/hidraw0) but it seems, that inverter_poller cannot open it (or it is trying to open quite different file)?! weird!

Read my blog: https://skyboo.net/2017/03/monitoring-voltronic-power-axpert-mex-inverter-under-linux/

[A13xund3r]

Lack of permission? Try root.

[sebashb]

I'm running it as root, as shown on the console output I posted on the original question.

I also noticed that after failing to run inverter_poller the Cypress Semiconductor USB to Serial disappears from lsub and the device also disappears from /dev/hidraw0.

[A13xund3r]

I'm running it as root, as shown on the console output I posted on the original question.

It should say root@ not user@ except if you heavily modified your system. sudo should do the job but not always does. Anyway next issue indicate this is other problem.

I also noticed that after failing to run inverter_poller the Cypress Semiconductor USB to Serial disappears from lsub and the device also disappears from /dev/hidraw0.

This is symptom of faulty USB device, wrong driver or unspecified system issue (chipset, USB host, kernel).