The LN-101 (USB Downloader) is used to download programs from the PC onto the CM-100 and many other controllers. (Refer to Compatibility Chart below for more info)
Reference:
Compatibility Chart : Click Here
Link to e-Manual : Click Here
Software RoboPlus (R+) : Click Here
DXL SDK 3.0 for Windows/Linux (Github): Click Here
OpenCM IDE : Click Here