The function key illumination request returns the Keypad KeyChange
Update (KC) data with the Key Number set to zero (0). This command
allows automation equipment to request the illumination status of
the keypad function keys for building virtual keypads on a PC.
see
4.21.1 Request Keypad Function Key Illumination Status (kc)
Request Keypad Function Key Illumination Status
The function key illumination request returns the Keypad KeyChange Update (KC) data with the Key Number set to zero (0). This command allows automation equipment to request the illumination status of the keypad function keys for building virtual keypads on a PC.
4.21.1 Request Keypad Function Key Illumination Status (kc)