Registers starting address 00401 contain the license keys which enable particular functions of the IO-FEP2. The license key appear as character strings as entered at the web GUI. A license key is exactly 39 characters long, containing the 128 bit key as a hexadecimal string with '-' characters every 4 digits for better readability. Including the 0-termination each key covers 20 registers.
Unlike other setup configuration data, license keys are stored in a file KEYS.TXT rather in SETUP.TXT.
Register Purpose
00401 license key 32 inputs
00421 license key 48 inputs
00441 license key 8 wg switches
00461 license key 12 wg switches
00481 license key 16 wg switches
00501 license key protection switching
00521 license key temperature control
00541 license key lna supply monitoring