The calculation that is made when you send a value through a P->F module, and the frequency you get when sending a value to the Pitch input of an oscillator is:
F = 440 × 2(P-69) / 12
What is happening in your example, is that you take the note numbers (0 ~ 127), convert them to frequency in Hz (8 ~ 12544), divide that by ten (0.8 ~ 1254) and then send those numbers to the Pitch input, where again they are interpreted as note numbers and converted into frequency in Hz (9 ~ 2.4×1032). As you can see in the graph below, the pitch rises slowly at first, overtakes the normal pitch around note number 80, and then quickly rises above human hearing around note number 89.
Y-axis: frequency (Hz), X-axis: MIDI note number
Without knowing exactly the sound you're after, and your level of experience with Reaktor and modular synthesis in general, it's difficult to comment. However, here's how I would build a simple synth tom (in an older version of Reaktor):
A few notes:
The Pitch input of an oscillator expects note numbers (0 ~ 127), whereas the Frequency input expects values in Hz (20 ~ 20,000).
Pitch is an exponential scale (adding 12 raises the pitch by an octave), Frequency is a linear scale (multiplying by 2 raises the pitch by an octave). The Exp P->F and Log F->P modules convert a signal between the two scales.
The Pitch input of an oscillator is measured at the event rate, the Frequency input is measured at audio rate. So to have smooth pitch envelopes, you need to use the Frequency input.
If you want to have a pitch envelope change the pitch by a fixed number of notes (e.g. 2 octaves up) whatever the basic pitch of the note you're playing is, you should set the envelope depth as a multiple of the frequency. As you can see, I convert the pitch to frequency, and then multiply it with the Bend knob value; setting the knob to 1, 2, 4 or 8 will set the envelope depth to 1, 2, 3 or 4 octaves above the basic pitch.
Every module and macro in Reaktor can be set to monophonic or polyphonic (indicated by a red or yellow light in the structure). If you want a signal to be identical for all notes you're playing, make the modules it goes through monophonic; if you want a signal to be different for every note, make the modules polyphonic. Note pitch and gate are polyphonic, panel controls are monophonic. If you combine a mono and a poly signal (like when I combine the Bend knob value with the note pitch and gate signal using a polyphonic multiply module), the result is polyphonic.