2 connecting to profibus-pa – Siemens SIMATIC NET PROFIBUS User Manual

Page 48

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Topologies of SIMATIC NET PROFIBUS Networks

2-22

PROFIBUS Networks SIMATIC NET

6GK1970-5CA20-0AA1 Release 2 05/2000

2.5.2

Connecting to PROFIBUS-PA

DP/PA Bus Coupling

The DP/PA bus coupler is the link between PROFIBUS-DP and PROFIBUS-PA.
This means that it connects the process control systems with the field devices of
the process automation (PA).

The DP/PA bus coupler is made up of the following modules:

S

DP/PA Coupler Ex [i] (6ES7 157-0ADx0-0XA0)

S

DP/PA Coupler (6ES7 157-0ACx0-0XA0)

S

DP/PA Link IM 157 (6ES7 157-0AA80-0XA0)

To implement a DP/PA link in redundant operation, you also require the following:

S

Bus module BM IM 157 for 2 x IM 157 (6ES7 195-7HE80-0XA0)

S

Bus module BM DP/PA Coupler for 1 DP/PA Coupler (6ES7 195-7HF80-0XA0)

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