On Saturday 02 March 2019 08:31:57 Thaddeus Waldner wrote: > I purchased a usb RS485 port that looks similar to the one you have. > I have the VF-s11 driver successfully loading and exposing its HAL > pins. The HAL pins are connected and are switching with my spindle > start-stop commands. I have also set the baud rate, parity, number of > bits, stop bits, and target where applicable in both the .ini file and > on the inverter panel. > > And I get nothing. > > I wonder if i’m not missing something. I do have an actual VF-S9 > instead of the VF-s11, but the VF-s11 documentation states that the > I/O should mostly match. > > I suspect that maybe I am using the wrong pair of wires on the RJ45 > connector. I couldn’t find any Toshiba documentation on that so I just > used what appears to be a standard for RS485 half-duplex on that > connector; the blue = A and the blue-white = B.
First, find a ground on the vfd, then you should see a low voltage, maybe 2 volts or thereabouts on the active wires used. The other 6 s/b millivolts or less. you may have to interchange them to get the correct polarity. Whoever thought useing an rj45 for a 2 wire circuit ought to be fixed so he can't make any more such mistakes. Sure its cheap, and dependable but theres also 7!=49 ways to screw it up! > The manual indicates that the inverter is always listening for serial > communication, and that sending the inverter enable signal > automatically cedes control from the inverter panel to serial. For > this reason I assume that I don’t need to enable serial communication > on the inverter in order for it to work. > > Thaddeus Waldner > ________________________________ > From: andy pugh <[email protected]> > Sent: Tuesday, January 29, 2019 4:07 AM > To: Enhanced Machine Controller (EMC) > Subject: Re: [Emc-users] VFS-11 modbus driver > > On Tue, 29 Jan 2019 at 01:39, Thaddeus Waldner <[email protected]> > wrote: > > As I understand it, I need a RS485 port. Is it reasonably possible to > add a > > > second serial port on some of the unused I/O pins to the MESA card? > > Would I be better served buying a usb-RS485 adapter? > > The vfs11 driver runs in user-space so the fact that you can't have > realtime control through USB is not such a problem. This means that a > cheap USB-RS485 dongle probably is as good a way to do it as any. > This is how I connected my VFD. > https://forum.linuxcnc.org/forum/18-computer/30675-on-motherboard-modb >us-rs485-connection > > -- > atp > "A motorcycle is a bicycle with a pandemonium attachment and is > designed for the especial use of mechanical geniuses, daredevils and > lunatics." — George Fitch, Atlanta Constitution Newspaper, 1916 > > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
