An operator may enter {HEAD ~ a desired performance} by {TAIL ~ 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 processing 
An operator may enter { HEAD ~ a desired performance } by { TAIL ~ 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 processing
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL 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