This sets the PFIP 4ms operational mode, the options are FULL or ADC_ONLY.
2=to: 2!:}Format: PF_MODE <mode>
2=to: 2!:}Example: PF_MODE FULL
2=to: 2!:}Comments: The only allowed modes are FULL and ADC_ONLY, and in normal operation for imaging the mode should always be FULL. If the mode is changed the PFIP 4ms will be reset, which will take about 45 seconds, during which time no further PFIP commands should be issued.