Siemens SIMATIC NET Manual page 69

CP 1616 as IO Controller
A PC communicates over Industrial Ethernet with PROFINET IO devices.
The user program runs on the PC. The data traffic is handled over the CP 1616
with several SIMATIC S7 PROFINET IO devices (for example ET 200S) over
Industrial Ethernet.
Figure 1-1
Commissioning PC Stations - Manual and Quick Start
Release 5/2005
C79000-G8976-C156-07
6 Using the CP 1616 as a PROFINET IO Controller/Device
69