An operator may enter {HEAD ~ a desired performance} by equipment on first computer which is placed in a communications packet with a device number, channel number, and one or more parameters and then sent to central controller for {TAIL ~ processing} 
An operator may enter { HEAD ~ a desired performance } by equipment on first computer which is placed in a communications packet with a device number , channel number , and one or more parameters and then sent to central controller for { TAIL ~ processing }
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL