Application and properties
1.4 Other services and properties
CP 1243-1 PCC
12 Operating Instructions, 02/2015, C79000-G8976-C384-01
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From an engineering station (ES) on which STEP 7 is installed, you can use the online
functions of STEP 7 via the CP to access the S7-1200 CPU if the station is located in the
same IP subnet. Online access via the operation center is not possible.
The following online functions are available:
– Downloading project or program data from the STEP 7 project to the station.
– Querying diagnostics data on the station.
– Downloading firmware files to the CP.
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As an SNMP agent, the CP supports data queries using SNMP (Simple Network
Management Protocol) in version V1.
For more detailed information, refer to section SNMP (Page 41).
Industrial Ethernet Security
With Industrial Ethernet Security, individual devices, automation cells or network segments
of an Ethernet network can be protected. The data transfer via the CP can be protected from
the following attacks by a combination of different security measures:
● Data espionage
● Data manipulation
● Unauthorized access
Secure underlying networks can be operated via additional Ethernet/PROFINET interfaces of
the CPU.
Security functions of the CP
The CP supports the following security functions:
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– IP firewall with stateful packet inspection (layer 3 and 4)
– Firewall also for "non-IP" Ethernet frames according to IEEE 802.3 (layer 2)
– Limitation of the transmission speed ("Bandwidth limitation")
– Global firewall rules
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Secure communication with one or two operation centers.
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To allow monitoring, events can be stored in log files that can be read out using the
configuration tool or can be sent automatically to a Syslog server.
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