Yeah, that’s strange that it wouldn’t apply the P1.0.16 setting only when getting a stop command from Gcode over RS485. I took a quick look at the manual.VFDs are tricky enough, but the non-native English takes it to another level!
The RS485 communication looks like it allows “Shutdown By Speed Reduction” which seems to be the same as a deceleration stop, but apparently the M5/S0 commands make the VFD respond as “Free Stop” instead no matter what. Doesn’t seem like the user can change that communication, although I’m not a VFD expert.
This parameter looks interesting. Apparently you could set P5.0.01 to “1” and use the stop key on your VFD panel to stop the spindle even while using RS485 communication. But I doubt you would want to have to push a physical button frequently.
I believe the OF controller can also control VFD/spindle run/stop, direction, and speed through pins 15,16, and 17 on breakout board as a PWM signal insead of RS485, but whether or not that would solve your “stop” problem I don’t know, and would take some work to set up. Probably not worth it.
In the end, I’m sure you’re right and Daniel would have come up with a solution already if one existed for this VFD. I do think it’s an oddity of the VFD though, because I use a very similar set-up to what you do with a Hitachi VFD, and haven’t ever had this issue.
And your solution is great
. Just a bit annoying with all the complex parameters in the VFD they overlooked such a basic function over RS485.