Siemens SINUMERIK 840D sl TCU 30.3 Equipment Manual page 68

Networking
6.4 Service and diagnostics
Figure 6-10
If all TCUs are active, the new TCU cannot be a spare part. The system will then automatically
switch to the name assignment phase after a set period of time has elapsed.
68
TCU menu: New TCU
Equipment Manual, 03/2023, A5E40874197B AD
TCU 30.3