You may be asking for more than your hardware can deliver. The 1771 analog input modules don't refresh their data as fast as you need, and your PLC scan will likely be an order of magnitude slower.
Depending on the model number, a 1771 analog input module updates it's data from 5 mS/8 channels (1771-IFF)to as much as 500 mS (1771-IL).
Even assuming that you could get fresh data that frequently in the CPU, you won't get it transferred to the Panelview that fast, so if your intent is to make the PV behave like an oscilloscope, you'll be disappointed.
If you still want to proceed, your strategy should be to store the value from the analog channel at the fastest practical rate in a sequence of N-registers using a FIFO or Shift Register type of instruction. Then work out a ladder logic sequence to unload the values from the stack into a destination register that the PV monitors. Use the trend object in the PV to display the data. I'm not an expert in the use of the PV, so I'm not sure what tools you have available to upate a PV's trend chart. I'd expect to see timed and change-of-state.