I have a Huanyang VFD ( Who doesn't ) that I am trying to connect into LinuxCNC Ver 2.7+. I followed the instructions, and appear to be getting signals from LinuxCNC on bootup. Great, except, the Huanyang doesn't appear to be responding, and the program poll times out,. I used an oscilloscope and got a very weird waveform. The data from Linuxcnc looks strong, but the data coming from the VFD looks trashy, and the serial converter isn't picking it up,. I had a spare RS232 to RS422 converter, and tried that, but the results were the same. I purposely kept the comm baud rate slow, at 9600. Will pick that up later if this ever works.
By enabling debug on the hal hy_vfd load, I see a hycomm query = 01 01 03 05 00 00 2c 4f
Then, a query-ret = 8
Response_length_calculated = 8
Waiting for message
WAIT_DATA() comms time out.
So, nothing happens... any ideas??
Also, as a side.. if I am getting this bad juju from the comm channel, why is LinuxCNC allowing me to continue... I would think it would put up some flags and say ... Whoah! ... but that is another side. so, if anyone has ideas... I'd appreciate them
