Lenz Digital plus LH101 Mode D'emploi page 180

60
If you enter a feedback address, but no feedback module
with that address is connected to the feedback bus, you
see the following display:
module ...
The valid feedback address range is 1 to 128. If you enter a lower or
higher value, you will be asked to enter a feedback address.
Press the '<=' key to enter the address of another feedback
Operating manual LH101