Connection Of Profibus Pa To Profibus Dp - Siemens SIMATIC PCS 7 Function Manual

Fault-tolerant Solutions in PCS 7
3.3 Solutions for communication
Configuration
Functionality
The Y Link creates a gateway from the redundant DP master system of an S7-400H to a non-
redundant DP master system. This enables devices with only one PROFIBUS DP interface to
be connected to a redundant DP master system as switched I/O.
The new generation of the Y Link no longer requires a repeater and is capable of forwarding
diagnostics requests from the corresponding function modules or I/O modules to the CPU.
DPV1 slaves can be connected downstream from the Y Link in addition to the standard
PROFIBUS DP slaves.
Additional information
● Section "How to configure the Y Link (Page 119)"
● Manual
3.3.5.4

Connection of PROFIBUS PA to PROFIBUS DP

DP/PA Link
The DP/PA Link allows a connection between PROFIBUS DP and PROFIBUS PA. DP/PA link
includes the following modules, which are interconnected via the backplane bus:
● Interface module IM 153-2
● one or more FDC 157 DP/PA couplers
66
DP/ PA Link and Y Link Bus Couplings
Fault-tolerant Process Control Systems (V8.0)
Function Manual, 03/2012, A5E02779471-02