Remapping RC channels on Taranis

I’m new to the Pixhawk. After hooking up APM planner 2.0.25 on my mac, I notice that the default channel mapping
seems to not be what pixhawk expects, Is this normal?
Also, I saw a web page where they mentioned that I could remap channels using Planner, but this version of planner
didn’t seem to have that page Config/Tuning -> Full Parameters.

Are you using PX4 or Ardupilot? I ask because APM planner doesn’t fully support PX4.

[MAV 001:1] PX4: 1d6bf64c NuttX: 1a99ba58
[MAV 001:1] Frame: QUAD
[MAV 001:1] PX4v2 00500023 34355119 38393730
[MAV 001:1] u-blox 1 HW: 00080000 SW: ROM CORE 3.01 (107888)
[MAV 001:1] PreArm: Check mag field
[MAV 001:1] PreArm: Check mag field
[MAV 001:1] PreArm: Check mag field
[MAV 001:1] PreArm: Check mag field
[MAV 001:1] PreArm: Check mag field
[MAV 001:1] PreArm: Check mag field

That looks like Ardupilot. You’ll need to ask on their forums.

How do I know if I’m running Ardupilot or PX4?