Siemens Simatic 6ES7 157-0AD81-0 A0 Series - HW Config: y Link in Hardware Catalog; HW Config: Minimum Configuration of an S7-400 H with a y Link

Commissioning the Y Link
7-3
DP/PA Link and Y Link Bus Couplings
A5E00193841-011
Example of a configuration of a Y link
Figure 7-1 HW Config: Y link in hardware catalog
Figure 7-2 HW Config: Minimum configuration of an S7-400H with a Y link