Jogging motors from a mobile device (safety considerations)

HMIs are notorious for stuck bits. Mostly due to the unreliable nature of TCP/IP. Made worse with SCADA packages because the comms make two TCP/IP hops, not just one. (HMI => Gateway => PLC.)

I wouldn't do it.

See this (rather contentious post) for more background:

Also search this forum for "momentary".

Note that much of the material and available work-arounds are focused on the Vision module. I don't know of any work-around or reliable momentary button functionality for Perspective (yet?).