Siemens ET 200SP Operating Instructions Manual page 21

Figure 1-1
CP 1543SP-1 - Cell protection with Security functions
The CP communicates encrypted with communications partners in the connected network.
The firewall monitors the access to the ET 200SP and therefore protects lower-level
networks. This avoids data loss, disruptions of production and damage to machines.
Figure 1-2
CP 1542SP-1, CP 1542SP-1 IRC, CP 1543SP-1
Operating Instructions, 01/2017, C79000-G8976-C426-03
Configuration example of an ET 200SP with CP 1542SP-1
Configuration example of an ET 200SP with CP 1543SP-1
Application and functions
1.9 Configuration examples
21