Y Coupler - Siemens Simatic 6ES7 157-0AD81-0 A0 Series Manual

2.2

Y coupler

The Y coupler is only intended for operation in the Y link for use on an S7-400H.
The Y coupler cannot be operated without an IM 157.
Features
S Connection of DP standard slaves
S Transmission rate of 45.45 kBaud to 12 MBaud
S Isolation between IM 157 and the underlying PROFIBUS-DP
S The power supply of the Y coupler is provided via the backplane bus.
Configuration
The Y coupler is a component of the Y link and is not configured separately.
DP/PA Link and Y Link Bus Couplings
A5E00193841-01 1
Description of Components
2-3