Huanyang VFD RS485 communication error

More
06 Aug 2023 20:41 #277163 by sliptonic
I'm controlling a Huanyang VFD via modbus using the hy_vfd module.  After startup, I can always start and stop the spindle but after that, I can't always restart.  In the terminal I see this error after the error occurs

ERROR Communication time out (-12)
WAIT_DATA() comms timeout

Is there a way to reset the communication without restarting? 
Is there a way to avoid the problem entirely?

Please Log in or Create an account to join the conversation.

More
19 Aug 2023 18:52 #278486 by sliptonic
bump.
Can I provide more information or is there a better place to ask for help?

Please Log in or Create an account to join the conversation.

More
19 Aug 2023 21:40 #278503 by MarkoPolo
Here's a thread that might help.

162.243.45.186/24-hal-components/34982-h...-setting-rpm?start=0

There is an option in the hy_vfd module "reconnect after disconnection" or something similar. I don't remember exactly and now I don't have access to my configuration, I can check later.
  After manually disconnecting usb and reconnecting, is it set to the same port, e.g. /dev/ttyUSB0 ? if not, it is good to make an entry in /etc/udev/rules.d/ so that each time the entry eg /dev/modbus always points to your usb-rs485 adapter.
 

Please Log in or Create an account to join the conversation.

More
19 Aug 2023 22:35 #278505 by sliptonic
Thanks. That thread is helpful. I slowed down to 9600 and changed the stop bit configuration. So far haven't been able to trigger the problem again. Fingers crossed.

I haven't been able to find the reconnect option. If you remember and can check, I'd appreciate it.

Please Log in or Create an account to join the conversation.

More
11 Oct 2023 22:02 #282776 by MarkoPolo
Sorry it's so late, but I only tested this option today. Maybe it will be useful to someone.
If you use the driver from this address github.com/xsnoopy/LinuxCNC-Yalang-yl620...s485-Modbus---VFDmod , there is a line ";ConnectionErrorList=5" in the vfd.ini file,
you need to remove the semicolon from the beginning of the line. Then you can remove usb_rs485 from the computer and after reconnecting everything works.

Please Log in or Create an account to join the conversation.

Time to create page: 0.198 seconds
Powered by Kunena Forum