yalang yl620 VFD rs485/modbus communicaiton

Sorry for my late response. Didn´t had much time to continue working on the integration.

So my problem with the pyvcp is that I can read out float numbers from the VFD for example the maximum HZ which I put for testing reasons to 399.9 HZ. I can see the number in the HAL but as soon as I connect the pins to a pyvcp, LinuxCNC won´t start anymore. If I get a second I will upload my code.

With the vfdmod, I can read the parameter register, but I can not write them. So I thougt it might be a good idea to use Classic Ladder, since I have a modbus relais platine as well which I wanted to use parallel.

So I started the integration of the VFD with the CL. I came to the point that I get the basic communication running and make the Error Bit for Modbus working and not working running. So my bus is working. My next step was to read out the registers. But no matter what I tried, I never got it sucessfully working. Part of the issue is that I don´t know how long the registers are, what type of reading I should use and so far and so on.

Meanwhile another user was able to upload an english manual to Github, so I have a complete description. I am sure I get it working as soon as I have figured out how to read out one of the registers. But I am not at that point and any help is greatly appreciated.

mBender wrote:

So my problem with the pyvcp is that I can read out float numbers from the VFD for example the maximum HZ which I put for testing reasons to 399.9 HZ. I can see the number in the HAL but as soon as I connect the pins to a pyvcp, LinuxCNC won´t start anymore. If I get a second I will upload my code.
 

PyVCP has different number display boxes for float, int and unsigned int:
linuxcnc.org/docs/2.8/html/gui/pyvcp.html#_number_displays
I suspect that you are trying to connect a flat HAL pin to an integer  PyVCP display widget. 
 

That worked.

I am continuing to work on the integration and started a new threat in HAL Examples. forum.linuxcnc.org/47-hal-examples/44328...mod-or-classicladder

I've also gotten stuck with the RS485 communication.
I've set the YL620A to

And since debugging inside linuxcnc was another layer of complexity I tried connecting via mbpoll:
I also switched the A/B.

Anyone of the YL620 mental support group that could help out with some idea or advice here?

cheers,
Torsten

I also have yl620a, I have the following:
P00.01    3    controlled by RS485
P03.00    4    baud, 3=9600, 4=19200
P03.01    1    id
P03.02    2    8 1 None
P03.03    0    RS485 communication error, 0=decelerate to stop, 3=non-stop
P07.08    5    freq controlled by RS485

on the /dev /ttyUSB0 port and speed 19200 I check the first 1200 addresses with this command

root@debian:/#  for i in {0..1200}; do mbpoll -b 19200 -1 -P none -v -1 -t 4 -r $i /dev/ttyUSB0; done 2>/dev/null |grep \[[0-9]\]: 2>&1
[1]:     3998
[2]:     3
[3]:     0
[4]:     0
[5]:     4000
[6]:     4000
[7]:     1000
[8]:     400
[9]:     100
[10]:     40
[11]:     10
[12]:     100
[13]:     0
[14]:     0
[15]:     0
[16]:     1
[17]:     0
[18]:     1

if that doesn't work then I suspect the problem is with the physical connection

Marek

Let me preface this post with, I am completely new to LinuxCNC so go easy on me please : )

I am hoping someone can help me. I am trying to get my YL620 VFD talking through VFDMOD. I have partial success. RS485 shows as connected. I can start in forward or reverse and stop the spindle. However I am unable to control the speed in any way. Either GCODE or with the + and - buttons in Axis. At start up my spindle speed is set to 100hz, as I set it in the ini, and that's where it stays no matter what I do.

I have attached all the config files, if anyone is able to help me to get this working I would be eternally grateful! I am at the point of pulling my hair out. 

I have tried ClassicLadder and MB2HAL as well with zero success. The closest I have got is VFDMOD. That being said I would be happy with getting any method working at this point.