Siemens SIMATIC NET PROFIBUS User Manual
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).
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)