Em 277 Profibus-Dp Module And Cpu 224 On A Profibus Network - Siemens SIMATIC S7-200 System Manual

Setting Up Communications Hardware and Network Communications
Figure 7-22 shows a more general network including multiple master devices.
Higher baud rates and more connections are made possible by using the EM 277
PROFIBUS-DP module.
SIMATIC
programming device
Figure 7-22
7-28
S7-300 with
CPU 315-2 DP

EM 277 PROFIBUS-DP Module and CPU 224 on a PROFIBUS Network

ET 200B
CPU 224 EM 277 PROFIBUS-DP
CPU 400
S7-200 Programmable Controller System Manual
A5E00066097-02